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Installation and vi EMAN N 
service instructions 


for heating engineers 


Vitotronic 300 
type KW3 
Weather-compensated digital boiler and heating circuit control 


See applicability, page 3. 





VITOTRONIC 300 















VIES 


SMANN 





5862297 GB 12/2002 Please keep safe 


General information 


Safety instructions 


Please follow these safety instructions closely to prevent accidents and 


material losses. 


Safety regulations 

Installation, initial start-up, 
inspection, maintenance and repairs 
must be carried out by a competent 
person (heating engineer/installation 
contractor). 


Observe all current safety 
regulations as defined by DIN, EN, 
DVGW, TRGI, TRF and VDE or locally 
applicable standards. 

See also the safety instructions sheet 
in the Vitotec Technical Guide. 


Before working on the equipment/ 
heating system, isolate the mains 
electrical supply (e.g. by removing a 
separate mains fuse or by means of a 
mains electrical isolator) and 
safeguard against unauthorised 
reconnection. 


When using gas as fuel, also close 
the mains shut-off valve and 
safeguard against unauthorised 
re-opening. 


Work on gas equipment 

This must only be carried out by an 
approved contractor. 

Please observe all commissioning 
work specified for gas installations 
acc. to TRGI or TRF and all local 
regulations. 


Repair work 
It is not permitted to carry out repairs 
on parts that fulfil a safety function. 


Initial start-up 

The initial start-up must be carried 
out by the installer of the system or a 
designated commissioning engineer; 
all actual values should be recorded 
in a commissioning/service report. 


Instructing the system user 

The system installer must hand the 
operating instructions to the system 
user and instruct him/her in the 
operation of the system. 


A Safety instruction 

In this instruction manual, this 
heading denotes information which 
must be observed to prevent 
accidents and material losses. 


AN This symbol denotes information 
which must be observed to 
prevent material losses. 


5862 297 GB 


General information/index 


Product information/applicability 


Vitotronic 300, type KW3 
Only for integration/installation on/in Viessmann boilers. 


Valid for control units 
Part no. 7450 760 to part no. 7450 763 


Index 


General information 
Safety InStFUCLlOTis sete e e OR e Ht eU 2 
Product information/applicability ...............ssssssssssseee 3 


Heating system designs 


Systemi Versions: 1.0.5... EIE UP EE 5 
Installation 

Summary of electrical connections ...........sssssssseeee 12 
Inserting cables and applying strain relief |... sss 14 
Changing the high limit safety cut-out setting ...........sssssssssssesss 15 
Changing the control thermostat setting ............sssssssssssseeeee 17 
Inserting the boiler coding card .............ssssssssssees 18 


Sensor connection 
Pump connection 
External connections on plug [150] ooo... ccccsssssssseeeesssvsssssssssssseestttsessvsnnnassseseeseeees 21 
Connecting central fault messages iiien 22 
External heating program changeover „iiir 23 
Burner: Connection «Lease teet n RD M e n te a ceeds 
Mains electrical connection ............ssssssssssssssseseeenees 
Installing the top of the control unit . a: 
Opening the: control Unit dne EE Rer pee OT Oe DOG Fe a e ud 











Initial start-up 
Steps rne utt eru M. 30 
Further details regarding the individual steps 20.0.0... cece eee 30 


Service scans 





Service:level:surmmlalby 3st ot nv t t dan de na titer 36 
Temperatures, boiler coding card and brief scans ... . 37 
© Scanning operating conditions ccc eee eee nnnocennccennnnnnnnn 39 
3 Scanning and resetting "Maintenance" display „c 40 


Contents 


Index (cont.) 


Troubleshooting 

Faults with fault display at the programming unit sss 42 
Downloading fault codes from the fault memory (error history) ...................... 50 
Faults without fault display at the programming unit oo... eee 51 


Function description 























Boiler temperature control ............sssssssssssssssssene 54 
Heating:cireutt control ics eee e E ee ptr etta 56 
DHW cylinder temperature control n 61 
Components 

Components from the parts list |... 65 
Radio clock receiver iisisti iiser iee EEEE EEEE E EEEE EEE EEEn 
Flue gas temperature sensor .. 

Mixercircüitexténsion. Kit, RR RR A NNR 
Contact temperature sensor 

Limitthermostat e eerte inei be rete nte tet te ted 
Remote control. sev BUDE 
Room temperature sensor .. 

Plüg:150|i- o costas eoo Led tdm eas dna esa tod E M ER Loo s 
Control module V... titer ce te rte pa o p te tet dd 
KM BUS distributor 

Mains power distributor „n 

BO ier: COIN Gs CAR «nice re eti en aai N 
Burner connection cables 

Vitoair draught stabiliser ................sssssssssssseeeeeenes 
Motorised flue gas damper ..........sssssssssssssssseeeeennees 97 
Coding 

Resetting codes to as delivered condition ............... sss 98 
Codet onaran raina oan ath she cee Ea AN N recat te iene ER a eset, 98 
n De ————— — ——————————— 101 
Screed drying function diagram ............sssssssssssssssssseeeen 122 
Burner switching hysteresis sss 123 
ilacaltigk t P MCI 124 
Connection and wiring diagram .......... sss 127 
Appendix 

Specific atio Noss EIE 130 
Table for "Setting and equipment" entries sss 131 8 
Keyword Index xoa et ea ta e tt linear’. 136 


4 


5862 297 GB 


System version 1 


Heating system designs 


One direct connected heating circuit without mixer 




































































(À) Boiler with control unit 

Domestic hot water cylinder 

(C) Vitotrol remote control, 
Control module V or Vitocom 100 
KM BUS distributor, only with 
several KM BUS users 

(D) Heating circuit without mixer A1 


Required coding 


*1Standard delivery — boiler. 


, 


























20| A1 














28 
40 
41 
90 
145 
191 

































































Outside temperature sensor 
Boiler temperature sensor 
DHW cylinder temperature 
sensor 

Heating circuit pump 
Circulation pump for DHW 
cylinder loading (accessory) 
DHW circulation pump (on site) 
Mains connection (230 V~ 50 Hz) 
Burner 15t stage"! 

Burner 2" stage/modulating"! 
KM BUS user/distributor 
Two-stage/modulating burner 
extension 


Automatic changeover 
—— with DHW cylinder 


Heating system designs 


System version 2 


One mixer circuit 



















































































— e e e e — — ee — — — 



































(B) 


@) Boiler with control unit [17] Return temperature sensor 

Domestic hot water cylinder (accessory)? 

(C) KM BUS distributor, only for [20] M2 Heating circuit pump, mixer 
several KM BUS users, circuit 


Circulation pump for DHW 
cylinder loading (accessory) 
DHW circulation pump (on site) 
Mains connection (230 V- 50 Hz) 
Burner 15 stage"? 


e.g. Vitotrol remote control, 
extension kit or Vitocom 100 
(D Mixer circuit M2 
(E) Mixer circuit extension kit 














[s[z]BIS I8 IS] [i 

















Plug Burner 24 stage/modulating'3 
1 Outside temperature sensor KM BUS distributor 
2 Flow temperature sensor Mains connection for 
(standard delivery extension extension kit 
kit) 191| Two-stage/modulating burner 
3 Boiler temperature sensor extension 
DHW cylinder temp. sensor 











Required coding 





00: 3 | System with one mixer circuit, without DHW cylinder 
or 
00: 4 | System with one mixer circuit, with DHW cylinder 





"TCheck valve; only required if joined to a connector. 
*2e.g. for underfloor heating control via flow and return temperature sensor. 
*3Standard delivery — boiler. 


6 


5862 297 GB 


5862 297 GB 


Heating system designs 


System version 3 


One direct connected heating circuit without mixer and one mixer circuit 


s 





































































































eL- 




















































































































@®) Boiler with control unit 17 Return temperature sensor 
Domestic hot water cylinder (accessory)? 
(C) KM BUS distributor, only for 20! A1 Heating circuit pump 
several KM BUS users, 20| M2 Heating circuit pump, mixer 
e.g. Vitotrol remote control, circuit 
extension kit or Vitocom 100 21 Circulation pump for DHW 
(D) Mixer circuit M2 cylinder loading (accessory) 
(B Heating circuit without mixer A1 28 DHW circulation pump (on site) 
(P) Mixer circuit extension kit 40 Mains connection (230 V- 50 Hz) 
41 Burner 15t stage'3 
Plug 90 Burner 24 stage/modulating ? 
1 Outside temperature sensor 145| KM BUS distributor 
[2] Flow temperature sensor 156| Mains connection for 
(standard delivery extension kit) extension kit 
|3| Boiler temperature sensor 191| Two-stage/modulating burner 
5 DHW cylinder temp. sensor extension 















Required coding Automatic changeover 


00: 6| with DHW cylinder 


"TCheck valve; only required if joined to a connector. 
*2e.g. for underfloor heating control via flow and return temperature sensor. 
*3Standard delivery — boiler. 












Heating system designs 


System version 4 


Two mixer circuits 


© 156 156 




































































































































































ee EE 






































ie] 





























5862 297 GB 


5862 297 GB 


System version 4 (cont.) 


® Boiler with control unit 
Domestic hot water cylinder 

© Mixer circuit M2 

(D) Extension kit for mixer circuit M2 
©) Mixer circuit M3 

(P) Extension kit for mixer circuit M3 
© KM BUS distributor 

(B) Mains power distributor 


Required coding 







































































Heating system designs 

















Plug 

1 Outside temperature 
sensor 

2 Flow temperature sensor 

3 Boiler temperature sensor 

5 DHW cylinder temperature 
sensor 

17 Return temperature 
sensor 2 

20| M2/M3 Heating circuit pump 

21 Circulation pump for DHW 
cylinder loading 

28 DHW circulation pump 

40 Mains power connection 
(230 V~ 50 Hz) 

4 Burner 15 stage"? 

90 Burner 214 stage/ 
modulating"3 

145 KM BUS distributor 

156 Mains connection for 
mains distributor 

191 Two-stage/modulating 











burner extension 


00:7 |System with two mixer circuits, without DHW cylinder 





00:8 | System with two mixer circuits, with DHW cylinder 


*1Check valve; only required if joined to a connector. 
*2e.g. for underfloor heating control via flow and return temperature sensor. 


*3Standard delivery — boiler. 


Heating system designs 


System version 5 


One direct connected heating circuit without mixer and two mixer circuits 


1 























































































































































































































© 40 Q © 
156 156 O O 
Q 40/156 | | 
| | | 
| 145 | | 
J145 acl | N 
SIE a VEO ı 
N | ai À | ) 
| 20} S | | 
| | 
) [ao | ) 
| | ) 
| N [2 | | 
l e | | 
| | 
m] | M2 r 
cy Ale eh BS i 
| A ch | | 
S. = | | 
o Ol w- 
--% o IoT 
*1 |41] E- (dan tol 
(A 


10 


5862 297 GB 


5862 297 GB 


System version 5 (cont.) 


® Boiler with control unit 
Domestic hot water cylinder 

© Mixer circuit M2 

(D) Extension kit for mixer circuit M2 
©) Mixer circuit M3 

©) Extension kit for mixer circuit M3 
© KM BUS distributor 

(B) Mains power distributor 

( Heating circuit without mixer A1 


Required coding 









































Heating system designs 


Plug 

1 Outside temperature 
sensor 

2 Flow temperature sensor 

3 Boiler temperature sensor 

5 DHW cylinder temperature 
sensor 

17 Return temp. sensor"? 

20| A1 Heating circuit pump 

20| M2/M3 Heating circuit pump 






































Circulation pump for DHW 
cylinder loading 











28 DHW circulation pump 
40 Mains power connection 
(230 V~ 50 Hz) 

41 Burner 15t stage"? 

90 Burner 214 stage/ 
modulating"3 

145 KM BUS distributor 

156 Mains connection for 





mains distributor 








191 





Two-stage/modulating 





burner extension 


Automatic changeover 





00:10| with DHW cylinder 


"TCheck valve; only required if joined to a connector. 
*2e.g. for underfloor heating control via flow and return temperature sensor. 


*3Standard delivery — boiler. 


11 


Installation 


Summary of electrical connections 


Illustration shows the bottom part of the control unit as viewed from the rear. 





89 467 7989 


12 


5862 297 GB 


Installation 


Summary of electrical connections (cont.) 


































































































Plug 230 V~ Low voltage plug 
20] Heating circuit pump A1 1 Outside temperature sensor 
21] Circulation pump for DHW (ATS) 
cylinder loading (accessory) 3 Boiler temperature sensor 
[28] DHW circulation pump (on site) (KTS) 
40| Mains power connection 5 DHW cylinder temperature 
41| Burner sensor 1 (STS) 
50} Central fault message 5|[B] DHW cylinder temperature 
150| External connections, sensor 2 (STS) 
e.g. supplementary safety 15 Flue gas temperature sensor 
equipment (AGS) (accessory) 
156| Mains electrical connection of 143| Telephone contact 
accessories (external heating program 
changeover) 





145| KM BUS users e.g. Vitotrol 

remote control (accessory) 

or 

Vitocom 100 

191| Two-stage/modulating burner 
extension (part of the standard 
boiler delivery) 

















When connecting external switching 
contacts or components to the 
protective low voltage of the control 
unit, please observe the safety 
requirements of protection class Il, 
i.e. 8.0 mm air gap/creeping distance 
or 2.0 mm insulation thickness from 
live components. 

Ensure a safe electrical separation 
for all on-site components (incl. 
PC/laptops) acc. to EN 60 335 or 

IEC 65. 


13 


Installation 


Inserting cables and applying strain relief 


$f 






1. Remove knock-out tab from the 5. Secure the top part of the cable 
control unit. clamp. 


2. Click the bottom part of the fixing 6. Blank off unnecessary knockouts 
clamp into place. in the part of the control unit with 
cable grommets (not cut out). 
3. Cut out cable grommet. 


4. Insert the cable through the 


grommet and insert cable 
grommet into the casing. 


14 


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5862 297 GB 


Installation 


Changing the high limit safety cut-out (if required) 


The high limit safety cut-out is supplied with a factory setting of 110 ?C. 


AN If adjusted to 100?C, do not set the control thermostat above 75?C. 


Adjustment to 100 ?C at EGO 





(&) Slotted screw 


1. Pull the fuse from its holder. 3. Pull the control unit front panel up 
and pivot it back. 
2. Unhook and remove the cover 
from its four locking tabs. 4. Turn the slotted screw until the 
slot points to 100 ?C (once 
adjusted, the high limit safety 
cut-out cannot be reset). 


15 


Installation 


Changing the high limit safety cut-out setting (cont.) 


Adjustment to 100 ?C at Juchheim 





1. Pull the fuse from its holder. 4. Remove the nut. 

2. Unhook and remove the cover 5. Remove the high limit safety 
from its four locking tabs. cut-out. 

3. Remove reset button cover " fr”. 6. Turn the screw until the indicator 


points to 100 ?C. 


16 


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5862 297 GB 


Installation 


Changing the control thermostat (if required) 


The control thermostat is supplied with a factory setting of 75 °C. 
Do not set the control thermostat above 75 ?C if the high limit safety cut-out 
has been adjusted to 100 °C. 


Change to 87 °C/95 °C 





1. Lever out and remove rotary A If the system is operated in 


selector "(i)". 


. Using a pair of pointed pliers, break 


off the cams between "75" and 
"90" or "95" from the stop dial, 
which are identified in the drawing. 


. Fit rotary selector "(i)" so that the 


marking lies between "75" and "90" 
or "95", Turn rotary selector "(i)" 
fully clockwise to the end stop. 


conjunction with a domestic hot 
water cylinder, ensure that the 
maximum permissible domestic 
hot water temperature is not 
exceeded. If necessary, install a 
suitable safety device for this 
purpose. 


17 


Installation 


Inserting the boiler coding card 


Only use the boiler coding card included with the boiler product documentation. 








Boiler Coding | Part no. 
card 
Vitola 111 F1 7818 916 
Vitola 200 E1 7818 915 
Vitola 222 
Vitorond 200, type VR2 
Vitorond 222 
Vitogas 300, type GS3 Cb 7818 913 
Vitocrossal 300 
Insert the boiler coding card through 
the cut-out in the cover into slot "X7". 


18 


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5862 297 GB 


Installation 


Sensor connection 








8 
© ®© © © 


@) Flue gas temperature sensor 
Boiler temperature sensor 
©) DHW cylinder temperature 
sensor 
(D) Outside temperature sensor 
(interchange the cores) 
Installation location: 
m North or north-western wall, 
2 to 2.5 m above ground level; 
in case of multi-storey buildings 
in the upper half of the second 
floor 
= Not above windows, doors or 
ventilation outlets 
= Not immediately below a 
balcony or gutter 
= Do not render over 


Connection: 

2-core cable with a maximum 
length of 35 m and a cross-section 
of 1.5 mm? (copper) 


(E) 21d DHW cylinder temp. sensor 


19 


Installation 


Pump connection 


Available pump connections 











21! Circulation 

















Pumps 230 V~ 





Rated current: 


20| Heating circuit pump A1 


pump for DHW 


cylinder loading 
28} DHW circulation pump 


4 (2) A~ 


Recommended 


connection 
cable: 


HO5VV-F3G 0.75 mm? 
or 
HOBRN-F3G 0.75 mm? 


Please note: 

Heating circuit pumps for mixer 
circuits are connected to the mixer 
circuit extension kit (see page 73). 


Pumps 400 V~ 





@) Contactor 
Three-phase pump 


For selecting the contactor: 
Rated voltage: 230 V~ 
Rated current: 4 (2) A ~ 


Recommended 

connection 

cable: HO5VV-F3G 0.75 mm? 
or 


HOBRN-F3G 0.75 mm? 


5862 297 GB 


5862 297 GB 


Installation 


External connections on plug 











A The external connections must be volt-free. Plug |150| must remain 
plugged in, even if no connection is made. 


(@ Jumper "STB" - "STB" 

Jumper "TR" - "ON/TR" 

(C) External blocking 
(volt-free contact) 


External burner blocking 

m Remove jumper "TR" - "TR". 

m Connect the volt-free contact. 
Opening this contact leads to a 
controlled shutdown. 


A Only safety shutdown 
equipment, e.g. high limit 
thermostats, may be connected 
to these terminals. During this 
shutdown, the heating system 
is not protected against frost 
and the boiler is not held at the 
lower boiler water temperature. 








(D) External start 
(volt-free contact) 

© Minimum pressure switch 

©) Supplementary external safety 
equipment 


External burner start 

= Do not remove jumper "TR" - "TR". 

= Connect the volt-free contact. When 
the contact is closed, the first burner 
stage is started, and the boiler 
water temperature is regulated by 
the control thermostat. 


External safety equipment 

m Remove jumper "STB" - 

= Connect electrical safety 
equipment in series. 


"STB". 


Emergency mode 
Change jumper "TR" - 
"TR" KS "ON". 


"ON/TR" to 


21 


Installation 


Connecting central fault messages 


Rated voltage: 230 V~ 50 Hz 

Rated current: 4 (2) A~ 

Recommended 

connection 

cable: HO5VV-F3G 0.75 mm? 
or 


HO5RN-F 3G 0.75 mm? 





@) Central fault message equipment 


22 


5862 297 GB 


5862 297 GB 


Installation 


External heating program changeover 


The manually pre-selected heating program can be modified via the volt-free 
contact. 


Code "91" enables the external 
heating program changeover to be 
® allocated to the individual heating 
circuits. 
Use control module V for the 
separate heating program 
changeover for 3 heating circuits 
(see page 91). 





@ External heating program 
changeover 
(volt-free contact) 


Manually pre-selected heating program 
(with open contact) 


ma; Heating and DHW 
Standard room temperature alternating 
with reduced room temperature 
(set to 3 °C ^ standby mode) acc. to time 
program (as delivered condition) 

ma; Heating and DHW 
Standard room temperature alternating 
with reduced room temperature (set 
higher than 3 °C) acc. to time program 


a| Only DHW 


Changed heating program 
(with closed contact) 











Constant standby mode 
with frost protection 
(no DHW heating) 














Constant heating 











Constant standby mode 
with frost protection 














oj Standby mode 
with frost protection 


Constant heating 








23 


Installation 


Burner connection 


Modulating oil- and gas-fired boilers 


Connect the burner in accordance with DIN 4791. 
The burner cables are included in the standard boiler delivery. 
Max. current 4 (2) A. 


@) Terminal codes 


L1 Phase via high limit safety 
III || II cut-out to the burner 
PE Earth conductor to burner 


EL E EE M MEI N Neutral conductor to the 
burner 


T1, T2 Control chain 

S3 Connection for burner fault 

B4 Connection for hours run 
meter 

v Signal pass direction: 
Control unit — burner 

A Signal pass direction: 
Burner > control unit 


Equipment codes 

STB High limit safety cut-out 
of the control unit 

TR Control thermostat 

H1 Burner fault signal 

BZ Hours run meter 





@) To control unit 


To burner 


Burner without connector 

Install the mating plug from Viessmann 
or from the burner manufacturer; 
connect the burner cable. 


24 


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5862 297 GB 


Installation 


Burner connection (cont.) 


Burner without fan 


The burner cables are included in the standard boiler delivery. 
Max. current 4 (2) A. 


5-core burner cable 6-core burner cable 


LLLI] LLL 


vH£SCLILN @ 1 pa ES CL LL N 1 











BK1 —> T1 
BK2 —>N 
BK3 —> T2 
BK4 —> S3 
BK5 —> B4 
® To control unit 
To burner 
Terminal codes Colour coding to DIN/IEC 757 
L1 Phase via high limit safety BK black 
cut-out to the burner BK' black with imprint 
PE Earthing conductor to burner BN brown 
N Neutral conductor to the burner BU blue 


T1, T2 Control chain 
S3 Connection for burner fault 
B4 Connection for hours run meter 


25 


Installation 


Burner connection (cont.) 


Two-stage/modulating burner extension 


The function extension is supplied with the boiler. 


Max. power consumption 
m two stage: 1(0.5)A 
m modulating: 0.1 (0.05) A 


Observe coding addresses "02", "10" to "12", "15" to "18", "1A", "26" and "29" 


(see overview). 









BN|[BU|BK 
A 





OL—_10 
90 

























L. [re ]t7] 78 | 

















@) To control unit 

To burner 

(C) Junction box incl. relay 
K1 and K2 


Colour coding to DIN/IEC 757 
BK black 

BN brown 

BU blue 


26 


Terminal codes 
T6, T7, T8 Control chain "2^d burner 


T6 
T7 
T8 


stage or modulation 
control" 

(for two-stage operation 
via two-point controller; 
for modulating mode via 
three-point controller) 
From the burner 
Modulating burner close 
Burner modulating up/ 
2nd stage ON 

Signal pass direction: 
Control unit burner 
Signal pass direction: 
Burner —> control unit 


5862 297 GB 


5862 297 GB 


Installation 


Mains electrical connection 


Requirements 

Carry out the mains connection and all earthing measures (e.g. fault current 
circuit) in accordance with IEC 364, the requirements of your local electricity 
supplier, VDE regulations or all local and national regulations. The power supply 
to the control unit should be protected by a fuse with a max. rating of 16 A. 


Mains electrical isolator requirements (if necessary) 

For combustion equipment acc. to DIN VDE 0116, the mains electrical isolator 
fitted on site must comply with DIN VDE 0116 "section 6" (or local regulations). 
The mains electrical isolator must be installed outside the installation area 
and must simultaneously isolate all non-earthed conductors with at least 

3 mm contact separation. 


Replacing the mains connection cable 

3-core cable selected from the following options: 
m HO5VV-F3G 0.75 mm? 

m HOBRN-F3G 0.75 mm? 


1. Check whether the mains power 
cable to the control unit is fitted 
with a fuse with a max. rating of 
16 A. 


2. Terminate the enclosed mains 
connection cable inside the 
junction box (on site). 


/N Safety instructions 

Do not interchange cores "L1" and 
NEA 

L1: brown 

N: blue 

PE: green/yellow 





3. Insert plug [40] into control unit. 





(A) Mains voltage 230 V~ 50 Hz Colour coding to DIN/IEC 757 
Fuse (max. 16 A~) BN brown 

(C) Mains isolator, 2-pole (on site) BU blue 

(D) Junction box (on site) GNYE green/yellow 


27 


Installation 





Opening the contro 
















ZA 
A 
Pd a 
V 
NS 


Nr 








Initial start-up 


Steps 

Page 
1. Checking the heating circuit allocation ............. sse 30 
2. Checking the high limit safety cut-out .........sssssssssse 31 
3. Changing the language (if necessary) sss 31 
4. Matching up the coding addresses ..............sssssssssssssssssss 31 
5. Checking outputs (actuators) and sensors ...........sssssssssss 32 
6. Adjusting the heating curve ........ssssssssssssssesssseeeeeneeee ees 33 


Further details regarding the individual steps 


Checking the heating circuit allocation 


= Check whether the label for heating 
circuit allocation has been affixed 
to the corresponding field of the 
programming unit. 

m Press the corresponding key before 
commencing all adjustments. 





30 


5862 297 GB 


5862 297 GB 


Initial start-up 


Further details regarding the individual steps (cont.) 


Checking the high limit safety cut-out 


The "TÜV" key must be held down After the burner has been shut down 


during this test (position "J"). by the high limit safety cut-out, 
The control thermostat "(i)" is now a release the "TÜV" key, 
bypassed. The burner remains m wait until the boiler water 
switched on until the boiler water temperature has fallen 15 to 20 K 
temperature has reached the safety (Kelvin) below the set safety 
temperature and the high limit safety temperature, then reset the high 
cut-out has switched off. limit safety cut-out by pressing 
button “qr”. 


Changing the display language 


1. Press ©. 
This displays the outside 
temperature. 





2. Select the required language 
with ©. 





3. Confirm with 69. 


Matching up the coding addresses 


The control unit must be matched to 
the system design. 

For coding steps see page 102 and 
coding summary from page 103. 


31 


Initial start-up 


Further details regarding the individual steps (cont.) 


Checking outputs (actuators) and sensors 


Relay test 











1. Press [6] and 69 simultaneously 
for approx. two seconds. 
Relay test is activated. 





2. Select the relay outputs with @) or 





3. Press 69). Relay test is completed. 


The following relay outputs can be controlled subject to the actual equipment 
level: 


= Burner ON Please note: 
or The illuminated heating circuit 
Burner 15t stage ON selector button indicates the 
Or corresponding heating circuit. 


Burner modulating up 
= Burner 15t + 2d stage ON 
or 
Burner modulating neutral, 
Burner modulating close, 
m Heating circuit pump ON 
= Cylinder loading pump ON 
= Circulation pump ON 
m Heating circuit pump ON 
m Open mixer 
m Close mixer 
= Central fault display ON 


Checking sensors 


1. Press (i). 
Scanning “operating conditions” 
is activated, see page 39. 








2. Scan the actual temperature with 


@® or ©. 


3. Press (i). 
Scanning is completed. 














32 


5862 297 GB 


5862 297 GB 


Initial start-up 


Further details regarding the individual steps (cont.) 


Adjusting heating curves 


The heating curves illustrate the 
relationship between the outside 
temperature and the boiler water or 
the flow temperature. To put it 
simply, the lower the outside 
temperature, the higher the boiler 
water or flow temperature. The room 
temperature again depends on the 
boiler water or the flow temperature. 


Settings in the as delivered 

condition: 

m Slope "K” = 1.4 

m Level "Z" = 0 

Generally, the heating curve for 

m underfloor heating system lies in 
the (A) range, 

= low-temperature heating systems 
(according to the Energy Savings 
Order) lies in the (B) range, 

m and for heating systems with boiler 
water temperatures above 75 ?C 
lies in the (C) range. 
































Slope 
TNOO o + 
MON CON CN. CN 
110 d 
2.2 
100 MC 
o 90 18 
: 1.6 © 
20 80 6 
5c 14-01} 
Oo. 
ae 1.2 
Ee] n 
S geo 1.0 
© oO 
E E 50 0.8——]- 
$T 0.6 
2 = 40 ® 
sr a2 0.4 
a UN (92. 
er 
foo à 
d 10 5 0 -10 -15 -20 
Cray? 7 Outside temperature in °C 
“re z? 


33 


Initial start-up 


Further details regarding the individual steps (cont.) 


Changing slope and level (for each heating circuit separately) 





1. Call up slope with [x], 
value adjustable from 0.2 to 3.5 K; 
call up level with |]; 

















2. Change the value with ®© or ©. 


3. Confirm the set value with 69). 


@) Changing the slope 
Changing the level 


= 
= 
o 





Boiler water temperature or 


flow temperature in °C 


+20 -20 
Outside temperature in °C 


34 


value adjustable from —13 to +40 K. 


5862 297 GB 


5862 297 GB 


Initial start-up 


Further details regarding the individual steps (cont.) 


Adjusting the set room temperature (for each heating circuit separately) 











| 
Dos] 
© [| © 
Example 1: 


Adjustment of the standard room 
temperature from 20?C to 26?C 





(À) Boiler water temperature or 
flow temperature in °C 

(B) Outside temperature in °C 

(C) Set room temperature in °C 

(D) Heating circuit pump OFF 

(B Heating circuit pump ON 


Standard room temperature: 
Select the set day temperature with 
the set value adjuster. 

The value will be automatically 
adopted after approx. 2 seconds. 


Reduced room temperature: 
1. Call up the night temperature 
with [49]. 














2. Change the value with ®© or ©. 


3. Confirm the set value with 69). 











Example 2: 
Adjustment of the reduced room 
temperature from 5°C to 14°C 


Accordingly, the heating curve is 
adjusted along the set room temper- 
ature axis, which results in modified 
start/shutdown characteristics of the 
heating circuit pumps, if the heating 
circuit pump logic is activated. 


35 


Service scans 


Service level summary 







Function Key combination 


Adjusting the display | Press 69 and ®© 
contrast simultaneously; 
the display will darken 


Press @ and © 


simultaneously; 
the display will get lighter 














































































































































Temperatures, boiler Press |Ó| and ma 37 
coding card and short | simultaneously for approx. 
scanning two seconds 
Relay test Press [6] and Press 32 
simultaneously for approx. 
two seconds 
Operating condition | Press © Press © 39 
Maintenance scan Press (1) if "Maintenance" 40 
flashes 
Code 1 Press [©] and [| Press [6] and [5] 98 
simultaneously for approx. | simultaneously 
two seconds for approx. one 
second 
Code 2 Press [^| and ms Press [5] and 102 
simultaneously for approx. | [a5 
two seconds; simultaneously 
confirm with for approx. one 
second 
Resetting codes into Press || and ma 98 
the "as delivered simultaneously for approx. 
condition" two seconds, 
press (&) 
Error history Press ms] and Press 50 











simultaneously for approx. 
two seconds 





36 


5862 297 GB 


5862 297 GB 


Service scans 


Temperatures, boiler coding card and brief scans 

















1. Press [6] and m>] simultaneously 
for approx. two seconds. 





2. Select the required scan with ®© 


or ©). 
3. Press 09). 


The following values can be scanned subject to the actual equipment level: 


= Outside temp. adj. 
m Outside temp. actual 


= Boiler temp. set 

m Boiler temp. actual 

m Flue gas temp. max. 
= Flue gas temp. actual 


= DHW temp. set 

= DHW temp. actual 
= Flow temp. set 

= Flow temp. actual 
m Return temp. actual 
m Room temp. set 

m Room temp. actual 


m Boiler coding card 
= Brief scan 1 


to 
Brief scan 4 


—» The adjusted outside temperature 
can be reset to the current outside 
temperature with (&). 


—» The maximum flue gas temperature 
can be reset to the current value 
with (9). 


—> Display only if a remote control 
unit is installed. 

—> Boiler coding card summary, 
see page 18. 


37 


Temperatures, boiler coding card and brief scans (cont.) 


Service scans 


89 £62 Z989 


V/N v 











00€ |O41011A 00€ |0J101A 00€ |0J101A 
UM gz YUM gz UM z 

00Z |O-101A 00Z 1043011) 002 |041011A 
YUM L YUM L YUM | 

Jouyuod  |Z|N INDIO Jax! [041u02 1n2JIo Je|loq [041u02 
910UJ8J O/M Q| JO0Ju0oo 93ouj84| e1oui89J O/M Q| JOJ1uOO 930UJ8J4| 9o10UJ8J O/M Q 
EW 3In24I9 19XIUU — UOISJOA |Z|N 3In2JI9 Jax! — UOISJ9A 1n2JI9 Je|loq 
apow Bunejedo BIEMIZOS |əpow Bunejedo aIEMYOS |əpow Bunejedo € 


SN 941M-7 
EN UUBUJSSOIA ZW 








EN HN419 J8xiuü 
[0.3009 810uJ84 
— UOISJ8A 
aIEMYOS 

















A ejnpouu 3n24I9 OXI əjnpow N9419 OXI yun 

]01}U09 4J uoIsuə}xə uoisuedxoa yJ uoisuo1ixe | Buruue4604d yun [043u02 

— UOISJOA — UOISJ8A — UOISJ8A — UOISJ8A — UOISIOA — UOISIOA 
aIEMYOS BICMOS 9JeA3JoS 9JeAuJosS 9JeA3JoS aIEMYOS c 

Bunejnpoui z 

sJosn sJosn oDeis OM} | (,00,, Sse1ppe Buipoo ees) 

Sf18 941^-Z uueuissalA SNE Wy} eels ejBuis 0 uBisap weajsAs 
JequinN JequuinN edA1 Jeuung 0} "29e Ae|dsiq L 











38 


5862 297 GB 





Service scans 


Scanning operating conditions 


1. Press ©. 


O 2. Select the required operating 
condition scan with (£) or ©. 


2o00 o » 
og X O 


ooo O o 


EE 3. Press (i). 


The following operating conditions can be scanned subject to the actual 
equipment level: 


Heating circuits A1, M2 and M3 

m Holiday program with departure —> Display only if a holiday program 
and return date has been set up. 

m Actual outside temperature 

m Actual boiler temperature 

m Actual flue gas temperature 

m Actual DHW temperature 

m Actual flow temperature 
(only with mixer circuits) 


m Actual return temperature —> Display only, if a value higher than 
(only with mixer circuits) 0 has been set for coding address 
"C7". 
= Actual room temperature —> Display only if a remote control 
unit is installed. 
= Burner, hours run —» Reset hours run, burner starts and 
= Burner starts consumption after maintenance. 


The individual values can be reset 
to "0" with (&). 

m Consumption —> Display only, if set via coding 
addresses "26" or "29". 

m Time 

= Date 

m Burner ON/OFF 

m Cylinder loading pump ON/OFF 

m DHW circulation pump ON/OFF 

m Central heating circulation pump 

ON/OFF 

= Mixer open/closed 

= Various languages —> Each language can be selected as 
permanent display language with ©). 


39 


Service scans 


Scanning and resetting "Maintenance" display 


After limits have been reached, which were set up via coding addresses " TF", 
"21" and "23" (see page 105), the display indicates the flashing message 
"Maintenance", and the red fault lamp flashes. 


Please note: 

Set code "24:1" and then code "24:0", if maintenance is implemented before 
"Maintenance" is displayed; the set maintenance parameters for hours run 
and periods are reset to 0. 


1. Press (i). 
Maintenance scan is activated. 


2. Scan maintenance messages with 


(9 or ©. 


X 3. Press 69; 

display "Acknowledge: Yes"; 
confirm with 69). 
"Maintenance" display 
extinguishes, and the red fault 
lamp continues to flash. 





Please note: 

An acknowledged maintenance 
message can be redisplayed by 
pressing (approx. 3 seconds). 


40 


5862 297 GB 


5862 297 GB 





Service scans 


Scanning and resetting "Maintenance" display (cont.) 


After maintenance has been carried out 





1. Reset code "24:1" (see page 105) to 


"24:0". 
The red fault lamp extinguishes. 


Please note: 

If the coding address "24" is not 
reset, a new "Maintenance" 
display will be shown on Monday 
at 07:00 hrs. 


. If required: 


a Press (i). 

= Reset burner hours run, burner 
starts and consumption 
(see page 39). 

u Press (i). 


. If required: 





= Press [| and ma] 
simultaneously for approx. four 
seconds. 

= Reset "Flue gas temp. max." 
with (9) to the actual value 
(see page 37). 

m Press 09. 














41 


Troubleshooting 


Faults with fault display at the programming unit 


The red fault lamp (A) flashes for all 
faults. 


"Fault" flashes in the programming 
unit display when a fault message is 
issued. 


Find the fault 
1. Press ©). 


2. Call up further fault codes 
with ®© or ©. 
The fault can be acknowledged 
with 69. The fault message in the 
display will be hidden, but the red 
fault lamp (A) continues to flash. A 
new fault message will be shown 
in the display, if an acknowledged 
fault is not removed by 07:00 hrs 
the following day. 








42 


5862 297 GB 


5862 297 GB 


Troubleshooting 


Faults with fault display at the programming unit (cont.) 


Outside sensor 











Fault display design 
Fault display 


Fault code 
(for explanations see page 44) 


Fault number 
(itoi 
Fault symbol 


Fault display in plain text 

m Burner 

m Outside temperature sensor 
m Flow sensor 

m DHW cylinder sensor 

m Return sensor 

m Room temperature sensor 
m Flue gas sensor 


Calling up acknowledged fault 
messages 

Press for approx. three seconds. 
The fault will then be displayed. 
Select the acknowledged fault with 
® or © 


43 


Troubleshooting 


Faults with fault display at the programming unit (cont.) 


System Cause 
characteristics 


44 


Control mode Maintenance 


Activates higher 
than 0 °C outside 
temperature 


Mixer closes 


Control without 
return temperature 
influence 


Mixer closes 


Control without 
return temperature 
influence 


Short circuit 


Outside temperature 


sensor 
Cable break 


Outside temperature 


sensor 


Short circuit 
Flow temperature 
sensor 

Mixer circuit M2 


Short circuit 
Return temperature 
sensor 

Mixer circuit M2 


Cable break 

Flow temperature 
sensor 

Mixer circuit M2 
Cable break 

Return temperature 
sensor 

Mixer circuit M2 





Check 


Carry out 
maintenance 

Please note: 

Set code "24:0" after 
the maintenance 
Check the outside 
temperature sensor 
(see page 69) 


Check the flow 
temperature sensor 
(see page 81) 


Check the return 
temperature sensor 
(see page 81) 


Check the flow 
temperature sensor 
(see page 81) 


Check the return 
temperature sensor 
(see page 81) 


5862 297 GB 


5862 297 GB 


Troubleshooting 


Faults with fault display at the programming unit (cont.) 


System 
characteristics 


m with DHW cylinder: 
Cylinder loading 
pump ON; the 
boiler will be held 
at the set DHW 


cylinder temperature 


m without DHW 
cylinder: 
the boiler is 
regulated by the 
control thermostat 


Mixer closes 


Control without 
return temperature 
influence 


Mixer closes 


Control without 
return temperature 
influence 


Short circuit 
Boiler temperature 
sensor 


Cable break 
Boiler temperature 
sensor 


Short circuit 
Flow temperature 
sensor 

Mixer circuit M3 


Short circuit 
Return temperature 
sensor 

Mixer circuit M3 


Cable break 

Flow temperature 
sensor 

Mixer circuit M3 
Cable break 

Return temperature 
sensor 

Mixer circuit M3 





Check 


Check the boiler 
temperature sensor 
(see page 68) 


Check the flow 
temperature sensor 
(see page 81) 


Check the return 
temperature sensor 
(see page 81) 


Check the flow 
temperature sensor 
(see page 81) 


Check the return 
temperature sensor 
(see page 81) 








Cylinder loading 
pump ON: 

Set boiler 
temperature = set 
DHW cylinder 
temperature, priority 
is cancelled 


Short circuit 
DHW cylinder 
temperature sensor 1 


Check the DHW 
cylinder temperature 
sensor 

(see page 68) 





45 


Troubleshooting 


Faults with fault display at the programming unit (cont.) 


System Cause 
characteristics 





Control acc. to DHW 
cylinder temp. 
sensor 1 


Short circuit 
DHW cylinder temp. 
sensor 2 


Check 


Check DHW cylinder 
temperature sensor 2 
(see page 68) 





Cylinder loading 
pump ON: 

Set boiler temp. = set 
DHW cylinder temp., 
priority is cancelled 


Control acc. to DHW 
cylinder temp. 
sensor 1 


Control mode 


Emissions test mode 


Control mode 


Constant mode 


Cable break 
DHW cylinder temp. 
sensor 1 


Cable break 

DHW cylinder temp. 
sensor 2 

Short circuit 

Flue gas temperature 
sensor 
Communication fault 
Programming unit 


Internal electronics 
fault 


Invalid hardware 
recognised 


Check DHW cylinder 
temperature sensor 
(see page 68) 


Check DHW cylinder 
temperature sensor 2 
(see page 68) 

Check the flue gas 
temperature sensor 
(see page 71) 

Check connections 
and replace the 
programming unit, if 
necessary 

Replace printed 
circuit board 


Check main PCB 





The boiler is 
regulated by the 
control thermostat 


Control mode 


Internal fault 
Boiler coding card 


Cable break 
Flue gas temperature 
sensor 


Internal fault 





Plug in the boiler 
coding plug or 
replace, if faulty 
Check the flue gas 
temperature sensor 
(see page 71) 
Acknowledge fault, 
repeat data input 





46 


5862 297 GB 


5862 297 GB 


Troubleshooting 


Faults with fault display at the programming unit (cont.) 


System 
characteristics 
Mixer (M2) 
continues to control 


Mixer (M3) 
continues to control 


Control mode 
without remote 
control 


Communication fault 
Extension kit for 


mixer circuit M2 
Communication fault 
Extension kit for 
mixer circuit M3 





Communication fault 
Vitotrol remote 
control unit, 

Heating circuit A1 





Communication fault 
Vitotrol remote 
control unit, 

Mixer circuit M2 


Communication fault 
Vitotrol remote 
control unit, 

Mixer circuit M3 


Check 


Check the extension 
kit connections and 
coding. 

Start the extension kit 


Check connections, 
cable and coding 
address "AO" 








Boiler cools down 


External safety 


device 





m Check the plug 
connections [150] 

m Check all external 
safety equipment 

m Check the fault 
message module 





47 


Troubleshooting 


Faults with fault display at the programming unit (cont.) 


System Cause Check 
characteristics 


Control mode, 
max. pump speed 


Communication fault | Check coding address 
variable speed heating | "E5"; check DIP 
circuit pump, heating | switch settings on the 
circuit A1 heating circuit pump 


Communication fault 
variable speed heating 
circuit pump, heating 
circuit M2 
Communication fault 
variable speed heating 
circuit pump, heating 
circuit M3 





48 


Control mode 


Boiler cools down 





Active fault message Check the device 
input at control connected to the fault 
module V message input 





Communication fault Check connections 
Vitocom 100 and Vitocom 100 


Communication fault Check connections 
Control module V and control module V 
Communication fault | Check the expansion 
Expansion module module and 


Viessmann 2-wire connection cable 
BUS 


The high limit safety Check the high limit 
cut-out has responded | safety cut-out or the 
or the fault message fault message module 
module is not properly 

plugged in 


5862 297 GB 


5862 297 GB 


Troubleshooting 


Faults with fault display at the programming unit (cont.) 





System 
characteristics 
Control mode 
without room 
influence 


Control mode 


Short circuit 

Room temperature 
sensor, 

Heating circuit A1 


Short circuit 

Room temperature 
sensor, 

Mixer circuit M2 


Short circuit 

Room temperature 
sensor, 

Mixer circuit M3 





Cable break 

Room temperature 
sensor, 

Heating circuit A1 





Cable break 

Room temperature 
sensor, 

Mixer circuit M2 
Cable break 

Room temperature 
sensor, 

Mixer circuit M3 
Viessmann 2 wire 
BUS user fault 





Check 


Check the room 
temperature sensor 
(see page 89) and 
the DIP switch on 
Vitotrol (see page 84 
and 86) 


Check the control 
unit with the 
indicated user 
number 


49 


Troubleshooting 


Downloading fault codes from the fault memory (fault history) 


All faults are saved and may be scanned. 











1. Press ma] and 69 simultaneously 
for approx. two seconds. 





2. Call up the individual fault codes 


with ( or ©. 


Order of fault 
codes occurred 


Fault code 


Fault history 





in Last fault code 


X 10th last fault 
l code 





. All saved fault codes can be 
Fault history deleted with (iW). 


mm 1 
Ut rt 


X 
( 3. Press @). 





50 


5862 297 GB 


5862 297 GB 


Troubleshooting 


Faults without fault display at the programming unit 


Boiler cold, burner does not start 


Set the emissions test switch to ” W” 


= Pumps are not running — 
Check the supply voltage (mains isolator, mains supply cable, plug |40j, ON 
switch, fuse F1, 6.3 A (slow). 
If the F1, 6.3 A (slow) fuse has blown: 
1. Disconnect all 230 V plugs (pumps, burner, mixer motors etc.). 
2. Replace the F1 fuse. 
3. To determine the faulty device, reconnect all 230 V in sequence, until 
the faulty device is located. 














= Pumps are running > 
Is plug |41| live between L1 and N? 


No Yes 


Check plug [41], the burner 
connection cable and the 
high limit safety cut-out as 





















The fault is unlikely due to the control unit, 
instead the burner connection area or the 
burner itself may be the cause: 














well as any other limit Is terminal T1 of plug [41] live when 
switches (low water connected? 

indicator, pressure switch, No Yes 

etc.). 


Check any burner Press the TÜV key; the 
equipment (fuses, burner should then 
gas governor, etc.). start in accordance 
with the delay time 
(e.g. oil pre-heating). 
If the burner is still 
not operating, repeat 
the previous checking 
steps. 

It may be that faulty 
accessories 
(motorised flue gas 
damper) prevent the 
burner from starting. 


51 


Troubleshooting 


Faults without fault display at the programming unit (cont.) 


Boiler water temperature too high or too low 


Compare the actual and the set boiler water temperature 


m Set value too high or too low > 
Check the settings of the time switch, the heating curves and the coding 
addresses. 
Check the set value adjuster and the remote control (if installed): 


1. 
2. 


Preselect a high day temperature and a low night temperature. 

Set the time switch so, that in the next few minutes the system must 
change over between operation with standard room temperature and 
operation with reduced room temperature or vice-versa. 


. The changeover must affect a significant set value change for the boiler 


water temperature. 
—- No noticeable change: 
Temporarily connect the remote control (incl. base) directly to the 
control unit and repeat the above test. 
— Set value now perfect: 
The fault lies with the on-site connection with the remote control. 
- Set value still too high or too low: 
Repeat the device setup and remote control checks. 
Possibly replace the remote control unit. 


= Set value OK > 
The fault lies with temperature monitoring 


1. 


Establish the boiler water temperature with a thermometer inside the 
sensor well. 


2. Compare the values from the boiler temperature sensor with the 


resistance curve. 


3. Check the switch-off point of the electro-mechanical thermostat. 


52 


5862 297 GB 


5862 297 GB 


Troubleshooting 


Faults without fault display at the programming unit (cont.) 


Boiler hot enough, but the heating circuit pumps will not run 


"ar 


Set the emissions test switch to "y 


= Pumps are running ^ 
No pump control: 
Check heating curves, set values and heating circuit pump logic, possibly 
also external hook-up (control module V, solid fuel boiler, etc.) or high 
DHW demand. 


= Pumps are not running — 
Is plug |20| live between L and N? 


No Yes 


Check fuse F2, 4 A (slow). 

If the fuse has blown: 

1. Pull the plugs off pumps 
and mixer motors. 

2. Replace the F2 fuse. 

3. Re-connect devices in 
sequence to determine 
which one is faulty. 

4. Repeat this test, if the 
fuse F2 remains intact, 
but the pump 
connections do not go 
"live". 

Possibly replace the 
main PCB. 














1. Check pump connection and the pump. 
2. Check any additional control devices 
(e.g. maximum thermostat). 





53 


Function description 


Boiler temperature control 


Brief description 


The boiler water temperature is 
regulated by starting and shutting 
down the burner. 

In the "as delivered condition", the 
switching differential is +2 K, relative 
to the current set value. 

The set boiler water temperature is 
determined from the set flow 
temperature of the heating circuit 
with and without mixer and the set 
DHW temperature, and is subject to 
the installed boiler and the heating 
and control equipment. 

When the DHW cylinder is loaded, a 
set boiler water temperature is 
applied, which lies 20 K above the 


Functions 


The boiler water temperature is 
recorded by three separate sensors, 
which are inserted into a multiple 
sensor well: 
m High limit safety cut-out STB 
(liquid expansion) 
= Control thermostat TR 
(liquid expansion) 
= Boiler temperature sensor KTS 
(change in resistance PT 500) 


Upper control range limits 
m High limit safety cut-out 
STB 110/100/95 °C 
= Control thermostat TR 75/87/95 °C 
m Electronic maximum limit 
Setting range: 20 to 130 °C 
Changes via coding address "06". 


This limit is only effective within 


54 


set DHW cylinder value (adjustable 
via coding address "60"). The boiler 
water control is limited by control 
thermostat TR. 

The actual boiler water temperature 
is required for the control of the 
heating circuits and the DHW 
cylinder. 


Coding addresses that influence the 
boiler water temperature control 
are 02. 03, 04, 05, 06, 13. 

For a description, see the coding 
overview. 


the control range (not for DHW 
cylinder loading). 


Lower control range limits 

m Vitocrossal: 
Frost protection control: at an 
outside temperature below 1 ?C, 
the boiler water temperature will 
be regulated to at least 15/22 ?C. 

m Vitogas 100: 
Controls the boiler water 
temperature in standard mode and 
frost protection to 35/42 °C. 

m Vitola, Vitorond: 
Controls the boiler water 
temperature in standard mode and 
with frost protection to 42 ?C. 


For changes see coding address 
"A3", variable frost limit. 


5862 297 GB 


5862 297 GB 


Function description 


Boiler temperature control (cont.) 


Auxiliary circuits 

m Two-stage/modulating burner: 
An extension can be connected for 
controlling a two-stage/modulating 
burner. 

m External hooking up: 
The following external hook-ups 
can be implemented with the 
control module V: 
— Separate heating program 

changes for heating circuits 


Please note: 

The heating program changeover 
can be effected for one heating 
circuit or several heating circuits 
simultaneously via plug [143], see 
coding address "91". 





— External burner blocking 

— External burner start 

— External fault message input 

— Central fault message 

— External DHW circulation pump 
start (short operation) 


Control sequence 


Boiler goes cold The boiler heats up (set value «2 K) 
(set value -2 K) The burner shuts down. 

The burner start signal is set to the Modulating burner: 

set boiler water temperature -2 K, The burner shutdown point is 

and the burner starts its own determined by the switch-off 
monitoring program. difference (coding address " 13"). 


The burner start may be delayed by 
a few minutes subject to the number 
of auxiliary circuits and the 
combustion type. 


55 


Function description 


Heating circuit control 


Brief description 


The control unit provides control 
circuits for one heating circuit 
without mixer and two mixer 
circuits. 

The set flow temperature of every 
heating circuit results from the 
outside temperature, the set room 
temperature, the operating mode 
and the heating curve. 

The flow temperature of heating 
circuits without mixer is equal to the 
boiler water temperature. 

The flow temperature of the mixer 
circuits is regulated by a stepped 
opening or closing of the mixer. 


Functions 


The heating circuit without mixer is 
subject to the boiler water 
temperature and its control range 
limits. 

The heating circuit pump is the only 
actuator. The mixer circuit flow 
temperature is recorded by the flow 
temperature sensor. 


Time program 

The control unit time switch changes 
in accordance with the times 
programmed in the heating program 
"Central heating and DHW” between 
the operating modes "Central 
heating with standard room 
temperature" and "Central heating 
with reduced room temperature". 
Every operating mode has its own 
set level. 


56 


The mixer motor control changes the 
actuating and pause times subject to 
the control differential (control 
deviation). 


Coding addresses which influence 
the heating circuit control 

7F, 

AO to F2. 

For a description, see the coding 
overview. 


Outside temperature 

A heating curve must be set up for 
matching the control unit to the 
building and the heating system. 
The heating curve characteristics 
determine the set boiler water 
temperature subject to the outside 
temperature. An average outside 
temperature is used for control 
purposes. This comprises the actual 
and the adjusted outside 
temperature. 

See also "Adjusting the heating 
curve" page 33. 


5862 297 GB 


5862 297 GB 


Heating circuit control (cont.) 


Domestic hot water temperature 

m With DHW priority: 

The set flow temperature will be 
set to 0 ?C whilst the cylinder is 
being loaded. 

The mixer closes, and the heating 
circuit pumps are switched OFF. 
Without DHW priority: 

The heating circuit control unit 
continues to operate with the same 
set value. 

With modulating priority 

(only in conjunction with a mixer 
circuit): 

The heating circuit pump remains 
switched ON. The set flow 
temperature of the heating circuits 
will be reduced, for as long as the 
set boiler water temperature has 
not been reached during DHW 
cylinder loading. The set flow 
temperature is subject to the 
difference between the set and the 
actual boiler water temperature, 
the outside temperature, the 
heating curve slope and coding 
address "A2". 


Room temperature 

in conjunction with room 
temperature hook-up (observe 
coding address "b0") 


Compared with the outside 
temperature, the room temperature 
has a greater influence on the set 
boiler water temperature. This 
influence may be changed via coding 
address "b2". 

In conjunction with the mixer circuit: 
In case of a control difference (actual 
value deviation) above 2 K room 
temperature, the influence can be 


Function description 


increased again (via coding address 
"b6", quick heat-up/quick setback). 


Quick heat-up: 

The set room temperature must be 

raised by a minimum of 2 K by 

m pressing the party key "YY" 

= changing from reduced mode to 
standard mode 

m start-up optimisation 

Quick heat-up will stop when the set 

room temperature has been reached. 


Quick setback: 

The set room temperature must be 

reduced by a minimum of 2 K by 

m pressing the economy key "S" 

= changing from heating mode to 
reduced mode 

= shutdown optimisation 

Quick setback will stop when the set 

room temperature has been reached. 


Heating circuit pump logic 
(economy circuit) 

The heating circuit pump is switched 
off (set flow temperature set to 0 °C), 
when the outside temperature 
exceeds the value selected via 
coding address "Ab". 


57 


Function description 


Heating circuit control (cont.) 


Extended economy circuit 
The heating circuit pump is switched 
OFF, and the set flow temperature is 
set to 0 ?C, if 
m the outside temperature exceeds 
the value selected via coding 
address "A6" 
m the set room temperature is 
reduced via coding address "A9". 
m in conjunction with the mixer 
circuit: 
the mixer has been closed for 
12 minutes (mixer economy 
function, coding address "A7") 


Screed drying function 
(only in conjunction with a mixer 
circuit) 


Please note: 

Note DIN 4725 part 4. 

Four different temperature profiles 
can be selected for drying the 
screed. These profiles are activated 
via coding address "F1”. 


When the screed drying function is 
activated, the heating circuit pump of 
the mixer circuit is switched on, and 
the flow temperature will be held at 
the selected profile. After completion 
(30 days), the mixer circuit will again 
be regulated automatically via the 
set parameters. 


58 


Underfloor heating 
(only in conjunction with a mixer 
circuit) 


An additional return temperature 
sensor can be connected to achieve 
an optimum underfloor heating 
system. The control unit calculates a 
set return temperature. Changes are 
implemented, if the actual return 
temperature deviates from the set 
return temperature. 

This temperature difference may be 
changed via coding address "C7". 
When changing from central heating 
with reduced room temperature to 
"Central heating with standard 
temperature", the set flow 
temperature can be raised by 20 96 
for one hour via coding "C9:1". 


System dynamics - mixer circuit 
(only in conjunction with a mixer 
circuit) 


You can influence the control 
characteristics of the mixer via 
coding address "C4". 


Frost protection 

When the outside temperature 
reaches below +1 °C, a flow 
temperature of 15 to 42 °C will be 
safeguarded (two-point control). 
For changes see coding address 
"A3", variable frost limit. 


5862 297 GB 


5862 297 GB 


Heating circuit control (cont.) 


Flow temperature control 
Differential temperature: 

The differential temperature may be 
adjusted via coding address "05"; as 
delivered condition: 8 K. 


The differential temperature is that 
value by which the boiler water 
temperature should at least be 
higher than the currently required 
flow temperature of the mixer circuit. 


m System with only one mixer circuit: 
The set boiler water temperature 
will be automatically controlled to 
8 K above the set flow 
temperature. 


m System with a heating circuit 
without mixer and with a mixer 
circuit: 

The set boiler water temperature 
operates in accordance with a 
special heating curve. The 
differential temperature of 8 K 
towards the set flow temperature is 
setup at the factory. 


Function description 








Boiler water temperature or 


flow temperature in °C 


18K 


+20 
Outside temperature in °C 


@) Max. boiler water temperature 
Slope =1.8 boiler circuit A1 
© Slope = 1.2 mixer circuit M2 
(D) Boiler water temperature 

(with a differential temp. = 8 K) 
© Lower boiler water temperature 


59 


Function description 


Heating circuit control (cont.) 


Upper control limit 

Electronic maximum limit 

Setting range: 1 to 127 ?C 
Changes via coding address "C6". 


Please note: 

The maximum limit is no 
replacement for the underfloor 
heating system high limit 
thermostat. 


Control sequence 


Mixer circuit 
The mixer motor will not be selected 
within the "neutral zone" (x1 K). 


Flow temperature falls 

(set value -1 K) 

The mixer motor receives the signal 
"Mixer open". 

The signal duration lengthens with 
an increasing control differential. 
The duration of pauses reduces with 
an increasing control differential. 


60 


High limit thermostat for underfloor 
heating systems: 

The high limit thermostat switches 
the heating circuit pump OFF, if the 
set value has been exceeded. In such 
cases, the flow temperature reduces 
only slowly, e.g. it may be several 
hours before the system restarts 
again automatically. 


Lower control range limit 
Electronic minimum limit 
Setting range: 1 to 127 ?C 
Changes via coding address "C5". 


Flow temperature rises 

(set value +1 K) 

The mixer motor receives the signal 
"Mixer close". 

The signal duration lengthens with 
an increasing control differential. 
The duration of pauses reduces with 
an increasing control differential. 


Special conditions 

After every new start of the control 

unit, a relay test is implemented in 

the extension kit: 

m Mixer operates for approx. 150 s in 
position "Close"; heating circuit 
pump operates for approx. 10 s 

= Mixer operates approx. 10 s in 
position "Open" 

= Mixer operates approx. 10 s in 
position "Close" 

m Standard control mode. 


5862 297 GB 


5862 297 GB 


Function description 


DHW cylinder temperature control 


Brief description 


The DHW cylinder temperature 
control operates at a constant 
temperature. It is the result of 
starting and stopping the circulation 
pump for DHW cylinder loading. 
The switching differential is +2.5 K. 


Whilst the cylinder is being loaded, a 
constant upper boiler water 
temperature is set, and central 
heating is switched off (optional 
DHW cylinder priority). 


Functions 


Time program 

An automatic program or an 
individual time program may be 
selected for heating DHW and the 


control of the DHW circulation pump. 


Compared with the heating circuit 
heat-up phase, DHW heating starts 
30 minutes earlier in automatic 
mode. 

The individual time program enables 
up to four switching periods per day 
to be set via the time switch to 
control the DHW heating and the 
DHW circulation pump. 

Any cylinder loading sequence will 
be completed, independent of the 
time program. 


Coding addresses that influence the 
boiler water temperature control 
are 55, 56, 58 to 62, 64, 66, 70 to 75, 
7F, A2. 

For a description, see the coding 
overview. 


Frost protection 

The DHW cylinder will be heated to 
20 ?C if the DHW temperature falls 
below 10 °C. 


Auxiliary functions - DHW heating 
This function is activated by 
providing a second set DHW 
temperature via coding address 
"58", and activating the 4th DHW 
phase for DHW heating. 


61 


Function description 


DHW cylinder temperature control (cont.) 


In conjunction with coding address "7F" 

"TF:1" Detached house: 

= Automatic operation 
For systems with two or three 
heating circuits, the heating times 
for heating circuit 1 are applied. 

m Individual time program 
The switching times for DHW 
loading and the DHW circulation 
pump have the same effect on all 
heating circuits. 

"TF:0" Multi-occupancy house: 

= Automatic operation 
For systems with two or three 
heating circuits, the heating times 
for the respective heating circuit 
will be applied. 

m Individual time program 
The switching times for DHW 
loading can be adjusted separately 
for each heating circuit. 


Set DHW temperature 

The set DHW temperature can be 
adjusted between 10 and 60 ?C. The 
set range can be expanded to 95 ?C 
via coding address "56". 

You can select the set DHW 
temperature at the programming 
unit of the control unit and at the 
Vitotrol 300 remote control (if 
installed). 

You can determine the allocation to 
individual heating circuits via coding 
address "66". 


62 


DHW circulation pump 

This delivers hot water to the 
draw-off points at adjustable times. 
Up to four control periods can be set 
at the time switch. 


Auxiliary circuits 

DHW heating can be blocked or 
enabled by changing over the 
heating program. An external 
contact in conjunction with control 
module V can be used to briefly 
select the DHW circulation pump. 
The time may be adjusted via coding 
address "74". 


5862 297 GB 


5862 297 GB 


Function description 


DHW cylinder temperature control (cont.) 


Control sequence 


DHW cylinder goes cold 
(set value -2.5 K, adjustable via 
coding address "59") 


The set boiler water temperature is 
adjusted 20 K higher than the set 
DHW temperature (adjustable via 
coding address "60"). 

m Circulation pump start subject to 
boiler temperature for loading the 
DHW cylinder (coding "61:0"): 

The circulation pump starts, when 
the boiler water temperature is 7 K 
higher than the DHW temperature. 

m immediate start of the circulation 
pump for loading the DHW cylinder 
(coding "61:1"). 


DHW priority 

m With DHW priority: 
(coding "A2:2"): 
The set flow temperature will be 
set to 0 ?C whilst the cylinder is 
being loaded. 
The mixer closes, and the heating 
circuit pumps are switched OFF. 

= Without DHW priority: 

The heating circuit control unit 
continues to operate with the same 
set value. 

m With modulating DHW priority 
(only in conjunction with a mixer 
circuit): 

The heating circuit pump remains 
switched ON. The set flow 
temperature of the heating circuits 
will be reduced, for as long as the 
set boiler water temperature has 
not been reached during DHW 
cylinder loading. The set flow 
temperature is subject to the 
difference between the set and the 
actual boiler water temperature, 
the outside temperature, the 
heating curve slope and coding 
address "A2". 


63 


Function description 


DHW cylinder temperature control (cont.) 


The DHW cylinder is hot 
(set value «2.5 K) 


The set boiler water temperature is 
returned to the weather-compensated 
value. 


Pump run-on 
m The circulation pump for DHW 
cylinder loading runs on after 
cylinder loading, until 
— the difference between the boiler 
water and the DHW temperature 
is less than 7 K or 
— the weather-compensated set 
boiler water temperature is 
achieved or 
— the set DHW temperature has 
been exceeded by 5 K. 
The pump can run on for a max. of 
15 minutes (adjustable via coding 
address "62"). 
m Without the circulation pump 
running on for cylinder loading 
(Coding "62:00") 


DHW priority 

(coding "A2:2"): 

The set flow temperature is returned 
to the weather-compensated value. 
The heating circuit pumps are started 
and the mixer is set to control 
function. 


64 


Adaptive DHW heating 

(coding "55:1"): 

With adaptive cylinder loading, the 
speed of the temperature rise when 
heating DHW is taken into account. 


Also taken into account is the 
question of whether the boiler will 
be required to supply heat after the 
cylinder has been loaded or whether 
residual boiler heat should be 
transferred to the DHW cylinder. 
Accordingly, the control unit 
determines the burner and 
circulation pump shutdown point to 
prevent the set DHW temperature 
being substantially exceeded after 
the cylinder has been loaded. 


5862 297 GB 


Components from the parts list 


For parts list see page 124. 
Main PCB 


The main PCB comprises: 

m Relay for selecting pumps and 
burner 

= Connections for sensors, actuators, 
burner and mains connection for 
accessories 

m Fuse F2, 4A (slow) 


Printed circuit board 


All data is processed and outputs 
(relay) are selected. 


Power supply unit PCB 


The power supply unit PCB 
comprises the low voltage supply for 
all electronic equipment. 


Fault message module 


Faults (high limit safety cut-out 
responded, broken safety chain) are 
indicated in the display, and the 
central fault display output on 
control module V (accessory) is 
activated. 


Front panel with heating 
circuit selector keys 


Display and selection of the heating 


Components 


Optolink/emissions test 
switch PCB 


The PCB comprises: 

= Burner standby display 

= Fault display 

m Optolink laptop interface 

= Emissions test switch 

Emissions test switch for testing flue 

gas with briefly raised boiler water 

temperature. 

The following functions are triggered 

in position "y": 

= Burner start 
(may be delayed through fuel oil 
pre-heating, Vitoair draught 
stabiliser or flue gas damper) 

m Starting all pumps 

m Mixer remains set to control 
function 

= Control of the boiler water 
temperature by the "(D)" control 
thermostat 


Fuses 


F1: 6.3 A (slow), 250 V, 

max. power loss € 2.5 W, 

to protect the total device, burner, 
pumps and electronics 


F2: 4 A (slow), 250 V, 

max. power loss € 1.6 W, 

to protect the pumps and the mixer 
motor 


65 


Components 


Components from the parts list (cont.) 


TÜV key 


For testing the high limit safety 
cut-out. 
For a description see page 31. 


Programming unit 


Control unit Programming 


unit 





7450 760 7820 171 
7450 761 7820 170 
7450 762 7820 169 
7450 763 7820 168 


Adjusting the: 
m Heating program 
m Set values 
= Switching times 
= Heating curve 
(slope and level) 
= Date 
m Time 
= Economy and party mode 


Displaying: 

m Temperatures 

m Operating conditions 
= Faults 


66 


High limit safety cut-out 


m Type STB 56.10525.570, Messrs. 
EGO, DIN STB 10602000 
or 
EM-80-V/b7-1 60002843, Messrs. 
Juchheim, DIN STB 82699 

m Set to 110 °C in the as delivered 
condition, adjustable to 100 ?C (see 
page 15) 

m Electromechanical temperature 
switch according to the liquid 
expansion principle with lockout 

m Intrinsically safe; also lockout in 
case of capillary tube leaks or 
ambient temperatures below 
—10 °C 

m Limits the boiler water temperature 
to the maximum permissible value 
by shutdown and lockout 

m Central fixing M 10, 
capillary tube 1600 mm long, 
probe 3 mm, 180 mm long 

m Tests: 

Electrical according to VDE 0701 or 
local regulations 
Effectiveness via TÜV key 


5862 297 GB 


5862 297 GB 


Components 


Components from the parts list (cont.) 


Control thermostat Expansion module Viessmann 
2-wire BUS 
m Type TR 55.18015.050, Messrs. 
EGO, DIN TR11032002 PCB for data exchange with 
or additional heating circuit control 
EM-1/b1; 60002847, Messrs. units Vitotronic 050 or solar heating 
guchheim; DIN TR T1199 . controllers, as well as for connecting 
m Set to 75 °C in the "as delivered to overriding management systems 
condition", adjustable to 87 and via Vitocom 200 or 300. 
95 ?C (see page 17) Rotary selector S1 must be set to 1. 


A Safety instruction 

Adjust downwards at least 20 K 
higher than the DHW temperature, 
upwards at least 15 K lower than 
the high limit safety cut-out. 


= Electromechanical temperature 
switch according to the liquid 
expansion principle 

m Controls the maximum boiler 
water temperature (e.g. in 
emission test mode) 

m Setting axis flattened by 6 mm, 
setting button pushed onto the 
front of the axis 

m Capillary tube 1600 mm long 
Probe Ø 3 mm, 180 mm long 

m Tests: 

Electrical according to VDE 0701 or 
local regulations 

Effectiveness via emissions test 
mode 


67 


Components 


Components from the parts list (cont.) 


Boiler temperature sensor and cylinder temperature sensor 


760 
740 


720 


700 
680 
660 
640 
620 


Q 
o 
e 
e 


580 


ol 
o 
o 


Resistance in 


o1 
R 
o 


68 

































































0 20 40 60 80 100 120 140 


Boiler water or 
DHW cylinder temperature in ?C 


Connection 
See page 19. 


Checking the sensor 
1. Pull plug [3], [5] or [5][B 


























off. 





2. Check the sensor resistance at 


terminals "1" and "2" of the plug. 


Boiler water or | Resistance 
DHW cylinder in Q 
temperature 

in °C 

40 578 

50 597 

60 616 





3. Compare measurement with the 
actual temperature displayed (for 
scanning, see page 37). 

Check the installation and replace 
sensor, if necessary, in case of 
severe deviation. 


Specification 

Protection level: 

Permissible ambient 

temperature 

m during operation 
— boiler temperature 


IP 32 


sensor: 0 to + 130 °C 
— DHW cylinder temperature 
sensor: Oto+ 90°C 
m in storage and 
transport: -20to+ 70°C 


5862 297 GB 


5862 297 GB 


Components 


Components from the parts list (cont.) 


Outside temperature sensor 









































Resistance in Q 





00 
-40 -30 -20 -10 0 
Outside temperature in °C 


10 20 30 


Connection 
See page 19. 


Checking the outside temperature 
sensor 
1. Pull plug [1] off. 





2. Check the sensor resistance at 
terminals "1" and "2" of the plug. 





Outside Resistance 
temperature in ?C | in O 
-10 480 
0 500 
20 546 


3. Disconnect wires from the sensor, 
if actual values deviate severely 
from the curve. Repeat sensor 
measurements and compare with 
the actual temperature (for 
scanning see page 37). 


4. Depending on the result, replace 
cable or outside temperature 


sensor. 


5. Scan actual temperature 
(see page 37). 


Specification 


Protection: IP 43 
Permissible ambient 

temperature in use, 

during storage 

and transport: —40 to +70 °C 


69 


Components 


Radio clock receiver, part no. 7450 563 


The radio clock receiver provides fully automatic time setting for the control 
unit and remote control (if connected). 


e 





@) Outside temperature sensor (D) Red LED 
Radio clock receiver ©) Aerial 
(C) Green LED 
Connection Specification 
2-core cable with a maximum length Protection: IP 43 
of 35 m and a cross-section of Permissible ambient 
1.5 mm? (copper). temperature in use, 
during storage 
Check reception and transport: —40 to +70 °C 


During reception the green LED on 
the radio clock receiver flashes. 
When the red LED flashes, rotate the 
aerial until reception is confirmed by 
the flashing of the green LED. 


70 


5862 297 GB 


5862 297 GB 


Components 


Flue gas temperature sensor, part no. 7450 630 


















































00 
0 40 80 120 160 200 240 280 
Flue gas temperature in °C 


Mixer circuit extension kit 


Connection 
The sensor is plugged into socket 
"15" at the control unit. 


Checking the flue gas temperature 
sensor 
1. Pull plug [15 





off. 











2. Check the sensor resistance at 
terminals "1" and "2" of the plug. 


Flue gas Resistance 
temperature in Q 
in °C 
80 650 
160 800 
200 880 





3. Compare measurement with the 
actual temperature displayed (for 
scanning, see page 37). 

In case of severe deviation, check 
the installation and replace sensor, 
if necessary. 


Specification 


Protection level: IP 60 
Permissible ambient 
temperature 
m in operation: 0 to + 600 °C 
m in storage and 

transport: -20to+ 70°C 


For wall mounting, separate mixer motor, part no. 7450 059 
For mixer installation, incl. mixer motor, part no. 7450 069 


Flow temperature sensor 


See page 81. 


71 


Components 


Mixer circuit extension kit (cont.) 


Mixer extension 


Electrical connections summary 





@) Mixer extension 
= Mixer motor for 
part no. 7450 069 
m Wall mounting base for 
part no. 7450 059 
(C) Main PCB 
(D) Socket for heating circuit pump 
via plug [20] 230 V~ 50 Hz 
(E) Socket for mains connection via 
plug |40] 230 V~ 50 Hz 
(P) Fuse F1 
© ON/OFF switch 

















72 





BIN] 


B 





= 
re 
o 


(00 (D © 




















Low voltage connections 


Flow temperature sensor 
Return temperature sensor 
(accessory) 

No function 

KM BUS for communication 
with the control unit 


5862 297 GB 


5862 297 GB 





Components 


Mixer circuit extension kit (cont.) 


Pump connection 230 V~ Pump connection 400 V~ 








® (B) 


@) To the extension kit @) To the extension kit 
Contactor 
(C) Three-phase pump 


Specification see page 20. 


73 


Components 


Mixer circuit extension kit (cont.) 


Control unit connection Mains electrical connection 





@) To the extension kit @) To the extension kit 

To the control unit or to the KM To the control unit or the mains 
BUS distributor distributor 

(C) KM BUS cable (C) Mains cable 

Please note: Please note: 

Use KM BUS distributor (see page Use the mains distributor when 

93) when connecting several BUS using two extension kits (see 

users. page 94). 


74 


5862 297 GB 


5862 297 GB 


Components 
Mixer circuit extension kit (cont.) 
Mixer motor, part no. 7450 657 
(only when using the extension kit, part no. 7450 059) 


The mixer motor is a synchronous single phase motor with reversible 
rotation, together with gearbox and two limit switches. 


Specification 


Rated voltage: 230 V~ 
Rated frequency: 50 Hz 
Power consumption: 4W 
Protection level: IP 42 
Torque: 3 Nm 


Operating time for 90? 4: 120s 








(A) Wall mounting fixture — 
extension kit 

Plug in mixer motor 

(C) Mixer motor 
A Mixer open 
W Mixer closed 


75 


Components 


Mixer circuit extension kit (cont.) 


Mixer motor, part no. 9522 487 


(only when using the extension kit, part no. 7450 059) 


The mixer motor is a synchronous single phase motor with reversible 
rotation, together with gearbox and two limit switches. 





(& Wall mounting fixture — 
extension kit 

Mixer motor 
A Mixer open 
W Mixer closed 

(C) Coupling switch 


76 


Specification 

Rated voltage: 

Rated frequency: 

Power consumption: 
Protection level: 

Torque: 

Operating time for 90° x: 


230 V~ 
50 Hz 
3W 
IP 42 
5Nm 
135s 


5862 297 GB 


5862 297 GB 


Components 


Mixer circuit extension kit (cont.) 


Mixer motor, part no. 9522 488 
(only when using the extension kit, part no. 7450 059) 


The mixer motor is a synchronous single phase motor with reversible 


rotation, together with gearbox and two limit switches. 








MAN 
@) Wall mounting fixture — Specification 
extension kit Rated voltage: 
Mixer motor Rated frequency: 
A Mixer open Power consumption: 
W Mixer closed Protection level: 


(C) Coupling switch Torque: 
Operating time for 90° x: 





230 V~ 
50 Hz 
4W 
IP 42 
12 Nm 
125s 


77 


Components 


Mixer circuit extension kit (cont.) 


Changing the rotational direction 


= For the installation examples on page 79 and 


m for systems with Modular Divicon 


the rotational direction must be changed. 


A Safety instruction 


Switch OFF the mains power supply before opening the device. 
Switching the mains switch on the mixer extension OFF is not safe enough. 


(&) ON/OFF switch 
Rotational direction switch on the 
main PCB 


78 


1. Open mixer extension. 
Rotational direction switch: 
Position I: 

As delivered condition 
Position II: 
Change the rotational direction 


2. Close mixer extension. 


3. Rotational direction: 
Switch ON the mains power 
supply and the main switch; the 
device then implements a relay 
test. 


Relay test 

m The mixer operates for approx. 150 s 
in position "Close"; the heating 
circuit pump operates for approx. 
10s 

m The mixer operates approx. 10 s in 
position "Open" 

m The mixer operates approx. 10 s in 
position "Close" 

m Standard control mode 


Please note: 
A relay test is implemented every 
time the system is switched ON. 


5862 297 GB 


5862 297 GB 


Components 


Mixer circuit extension kit (cont.) 


Change the rotational direction for these installation examples (see page 78). 


Iw (&) 










L\ 


Gp Uj 
-— — Q 
HR X KV SZ 
@) N 
NZ 


O 


HV 





zu 
O Se (&) Marking notch 


HR Central heating return 

HV Central heating flow 
Q KR Boiler return 

KV Boiler flow 


A 





79 


Components 


Mixer circuit extension kit (cont.) 


Coding 


(DIP switches on the main PCB of the mixer extension) 


$1.4 must always be set to "OFF". 


Affects mixer circuit M2 


S1 
L—HB|*t 


Zz|L—9|^ As delivered condition 


OJE |N 
C—H|-— 


Affects mixer circuit M3 


$1.1 to "ON" 
S1 
m e 
z|c—m|o 
O |g—|o« 
8 —3|-— 


Specification 


Rated voltage: 
Rated frequency: 
Rated current: 
Power 
consumption: 
Safety class: 
Test class: 
Protection: 
Function: 


m in operation: 


80 


230 V~ 

50 Hz 

4 A~ 

2.5 W 

l 

II 

IP 42 

Type 1 B acc. to 
EN 60730-1 
Permissible 
ambient 
temperature 
0 to +40 °C 


Installation in living 
accommodation 
and boiler rooms 
(normal ambient 


conditions) 


When connecting a return 
temperature sensor 
$1.3 to "ON" 

S1 


m in storage 

and transport: -20 to +65 °C 
Rated capacity 
of relay outputs 














at 230 V~ for 
m Heating circuit 
pump |20|: 4(2) A~ 
m Mixer motor: 0.2(0.1) A~ 
= Total: max. 4 A~ 


5862 297 GB 


5862 297 GB 


Components 


Contact temperature sensor, part no. 7450 642 


For recording the flow and return temperature. 






































20 30 40 50 60 70 80 90 100 
Flow or return temperature in ?C 


Connection 
The sensor is plugged into socket 
"2" or " 17" of the mixer extension. 


Check sensor 
1. Pull plug [2] or [17 














off. 





2. Check the sensor resistance at 
terminals "1" and "2" of the plug. 





Flow or return Resistance 
temperature in Q 

in °C 

30 569 

40 592 

60 643 








3. Compare measurement with the 
actual temperature displayed (for 
scanning, see page 37). 

Check the installation and replace 
sensor, if necessary, in case of 
severe deviation. 


Specification 


Protection level: IP 32 
Permissible ambient 
temperature 
m in operation: 0 to +100 °C 
m during storage and 

transport: —20 to +70 °C 


81 


Components 


High limit thermostat for limiting the maximum temperature 


Immersion thermostat, part no. 7151 728 
Contact thermostat, part no. 7151 729 


Electromechanical high limit 
thermostat according to the liquid 
expansion principle. 

Switches OFF when the set heating 
circuit pump value is exceeded. 


Specification 

Setting range: 30 to 80 ?C 

Connection 

terminals: Screw terminals 
for 1.5 mm? 

Switching differential 

m Immersion 


thermostat: max. 11K 
m Immersion 
thermostat: max. 14K 
DIN reg. no.: DIN TW 779 98 


- — o — o — o I 





@) Heating circuit pump 
Control thermostat 
(high limit thermostat) 











(C) Plug [20] of the thermostat 
(high limit) to the extension kit 





82 


5862 297 GB 


5862 297 GB 





Components 


Remote control 


Vitotrol 200, part no. 7450 017 

(with integral room temperature sensor for hooking up room temperature in 
conjunction with a mixer circuit) 

Setting the: 

= Day temperature, 

m Heating program, 

m Economy and party mode. 


Function changes can be effected via coding addresses "A0", "bO" to "b10", 
"CO" to "C2", "E1" and "E2" (see overview). 


Connection 
2-core cable (total cable length 
max. 50 m) 


Wall mounting fixture for 
Vitotrol 200 

(C) To the control unit or to the 
KM BUS distributor 


83 


Components 


Remote control (cont.) 


ON 


S6 Mile 


1234 


(&) PCB DIP switches 
(rear of the top of the case) 


Remote control | Coding switch 














affects setting 
System circuit A1 | As delivered 
(Heating circuit | condition 
selection key | 1]) ON 
1234 


Mixer circuit M2 ON 


(Heating circuit I f U U 


selection key | 2) 
1234 














Mixer circuit M3 
(Heating circuit 
selection key | 3|) 





C 
O 
Z 

| 

















84 


When connecting a separate room 
temperature sensor, set DIP switch 
"S6.3” to "ON". 

ON 


“HUNN 


1234 


Specification 

Power supply via KM BUS. 
Safety class: Hl 
Protection level: IP 30 
Permissible ambient 
temperature 


m in operation: 0 to +40 °C 
m during storage and 
transport: —20 to +65 °C 
Setting range for 
set room temp.: 10 to 30 ?C; 
adjustable from 
3 to 23 °C or 
17 to 37 °C 
via coding 
address "E1" 


Setting the reduced set room 
temperature at the control unit. 


5862 297 GB 


5862 297 GB 





Components 


Remote control (cont.) 


Vitotrol 300, part no. 7450 790 
(with integral room temperature sensor for hooking up room temperature in 
conjunction with a mixer circuit) 


Setting the: 

um Day and night temperature, m Holiday program, 

= DHW temperature, m Switching times, 

m Heating program, m Economy and party mode. 


Function changes can be effected via coding addresses "A0", "bO" to "b10", 
"CO" to "C2", "E1" and "E2" (see overview). 


Connection 
2-core cable (total cable length 
max. 50 m) 


Wall mounting fixture for 
Vitotrol 300 

(C) To the control unit or to the 
KM BUS distributor 


85 


Components 


Remote control (cont.) 


-|C 
njeo 
ede 
oS | | 


$30 


(&) PCB DIP switches 
(rear of the top casing) 


Coding switch 
setting 


Remote control 
affects 


As delivered 
condition 


System circuit A1 
(Heating circuit 
selection key | 1|) 








= 








O 
z 


vec 





Mixer circuit M2 
(Heating circuit 
selection key | 2|) 





vectl 
NO 














Mixer circuit M3 
(Heating circuit 
selection key | 3|) 





NO 











COU U do Onn 


vectl 





86 


When connecting a separate room 
temperature sensor, set DIP switch 
”S30.3” to "ON". 
-|2 
NICO 
w| Z 
AB[c— 
S30 


Specification 
Power supply via KM BUS. 
Safety class: Ill 


Protection level IP 30 
Permissible ambient 
temperature 
m in operation: 0 to +40 °C 
m during storage and 
transport: —20 to +65 °C 
Setting range for 
m standard set room 
temperature: 10 to 30 °C; 
adjustable from 
3 to 23 °C or 
17 to 37 °C 
via coding 
address "E1" 
m reduced set room 
temperature: 3 to 37 °C 


5862 297 GB 


5862 297 GB 


Remote control (cont.) 


Components 


Connecting several remote control units 


When you connect several remote control units to the control unit, use the 
KM BUS distributor, part no. 7415 028, which is available as accessory, or use 
a socket (on-site provision). 


Version 1 


(&) To the control unit or to the 


KM BUS distributor 
Socket (on site) 


m |f, apart from the remote control 
units, no further BUS users are 


connected, insert plug 








145 








of each 


remote control into the KM BUS 


distributor. 





(C) Vitotrol 1 
(D) Vitotrol 2 
© Vitotrol 3 


m On-site connection via socket: 
Connect in accordance with the 
diagram. 

= The total length of all KM BUS 
cables should be limited to 50 m. 


87 


Components 


Remote control (cont.) 


Version 2 


max. 15 m 








@) To the control unit or to the 
KM BUS distributor 

Socket (on site) 

(C) Vitotrol 1 


m |f several remote control units and 
additional KM BUS users are 
connected, make the connections 
via a socket (on-site) as shown in 
the diagram. 


88 


(D) Vitotrol 2 
© Vitotrol 3 
(P) Further KM BUS users 


m The total length of all KM BUS 


cables should be limited to 50 m. 


5862 297 GB 


5862 297 GB 


Components 


Room temperature sensor, part no. 7408 012 


The room temperature sensor measures the actual room temperature, if the 
remote control unit cannot be installed in a suitable location. 


Connection 

2-core cable with a maximum length 
of 35 m and a cross-section of 

1.5 mm? (copper). 


Set DIP switch 3 on the remote 
control unit to "ON" 
(see pages 84 and 86). 











(&) To the control unit 
Remote control 
(C) Room temperature sensor 


89 


Components 


Room temperature sensor, Part no. 7408 012 (cont.) 


2510 
oO 
© 500 

































































0 5 10 15 20 25 30 35 40 
Room temperature in °C 


Plug [150], Part no. 7819 028 


Check the room temperature sensor 
1. Disconnect the wires from the 
sensor. 


2. Check the sensor resistance at 
terminals "9" and "13b". 


Room Resistance 
temperature in Q 

in °C 

10 522 

15 534 

25 557 





3. Compare measurement with the 
actual temperature displayed (for 
scanning, see page 37). 

In case of severe deviation, check 
the installation and replace sensor, 
if necessary. 


Specification 


Protection level: IP 30 
Permissible ambient 
temperature 
m in operation: 0 to + 40°C 
m in storage and 

transport: —20 to +65 °C 


For the connection of external safety equipment, see page 21. 


90 


5862 297 GB 


5862 297 GB 





Components 


Control module V, part no. 7143 513 


Control module V for functional expansion of the control unit. 
Observe the coding addresses "32", "33" and "74" (see overview). 
Control module V is recognised automatically by the control unit 
(coding "94:2"). 








X4 X5 X6 X7 X8 X9 


| EE D EN NS S ERES mp md L1] 


103 103 103 103 103 103 103 [145 157 


SDEZ DES DE5 Dae DE3 DE2 „DET 
TT XX 













































































@ Control module V terminal 145] KM BUS 
arrangement box 157| Central fault message 
To the control unit Nominal relay rating: 
1(0.5 A 230 V~ 


A Do not alter the allocation of 
connections to sockets in 
control module V. 


91 


Components 


Control module V, Part no. 7143 513 (cont.) 











Plug |103 





DE1 External heating program change 
for heating circuits without mixer 
Closing the contact changes the 
boiler circuit to constantly 
reduced mode. 


DE2 External heating program 
change for mixer circuit M2 
Closing the contact changes 
mixer circuit M2 to constantly 
reduced mode. 


DE3 External burner blocking 
This function only affects the 
burner. Burner start is blocked, 
if the contact is closed. The 
burner will also not be started 
in case of "External demand” 
and when the actual 
temperature falls below the 
lower boiler water temperature. 


AN Frost protection for boiler 
and heating system are not 
safeguarded when this 
contact is closed. 


DE4 External burner demand 
(min. set boiler water temp.) 
The minimum set boiler water 
temp. of 70 ?C, which is adjusted 
via coding address "32", will be 
maintained. 
The external demand with or 
without heating circuit priority 
can be set via coding address 
"33". 


92 


DE5 


DE6 


DE7 


Two-stage or modulating 
burners are started subject to 
load demand. 


External burner demand 

(24 stage) 

When an external demand is 
signalled, the burner starts with 
full load and constant boiler 
water temperature, which is 
limited by the control 
thermostat. 


External fault message input 
The control unit displays the 
fault code "C9", and the red 
fault indicator in the control 
unit flashes, if the fault 
message contact is closed. The 
volt-free central fault message 
contact [157| is switched on. 
Any central fault message 
centre connected to |50| of the 
control unit will also be 
switched ON. 


























Short-term operation of the 
circulation pump 

Closing this contact starts the 
DHW circulation pump for an 
adjustable period of time. The 
operating time may be adjusted 
via coding address "74". 


5862 297 GB 


5862 297 GB 





Components 


KM BUS distributor, part no. 7415 028 


The connection between the control unit and the remote control, the remote 
monitoring equipment and control module V is provided by the KM BUS 
distributor. 


[O] 
16[5 [413] 2/7 | 
X8 


(&) KM BUS distributor arrangement box (©) Accessory connections 
Terminals for the connection of (sockets "X2" to "X7") 
additional KM BUS users (D) To the control unit 
(connection at terminals 
"X8.1" and "X8.2", 
"X8.3" and "X8.4" or 
"X8.5" and "X8.6") 


93 


Components 


Mains power distributor, part no. 7415 030 


Mains distributor to supply electrical accessories. 
The ON/OFF switch on the control unit isolates the equipment connected via 
the mains distributor. 


|e K1 





DIDO DID D 
156 156 156 40 pool gage 


LIS] 


! l 
i 
l DUI 00} (COO (oto NNLL l 
| Jo 


@ 


X1 





bone 


‘LLU MR 





@) Connection chamber - mains (D) Accessory connections 
distributor ©) Fuses 
To the control unit (mains supply 
connection of the control unit) 
© Mains power connection for the 
mains distributor, 230 V ~ 50 Hz 
(mains cable of the control unit) 


"TRemove the jumper, if a mains isolator is connected to these terminals. 


94 


5862 297 GB 


5862 297 GB 


Components 


Boiler coding card 


To match the control unit function to the boiler (see page 18). 


Burner connection cables 


For boilers with Function extension for connection to 

m oil- and gas-fired pressure jet a two-stage/modulating burner, 
burners, part no. 7404 960; for connection, 
for connection, see page 24. see page 26. 


m burner without fan, 
for connection, see page 25. 


For part no., see parts list. 


95 


Components 


Vitoair draught stabiliser, part no. 7338 725 and 7339 703 








41 
N T1 T2SSBA4 
NTs @) 








L1 














BK 5 
| PT 
11 O3- 
| Fg 
I1 K1 
im 












































T'--—|BK 1 
mb —| 
a 
l 
- 














@) To control unit 


To burner 


Function check 

Press rotary button (C) on the motor 

and turn to the central position. 

m Enable the burner from the control 
unit — 
The rotary button should move 
towards "=". 
The motor enables the control disc, 
and the flue pipe is open. 


In emergency mode 








96 


Colour coding to DIN/IEC 757 
BK black 
GN/YE  green/yellow 


= Burner OFF > 
The rotary button should move 
towards "t". 
The motor opens the control disc 


and the flue pipe is partially closed. 


Press rotary button (C) on the motor 
and turn clockwise to the limit stop 
beyond position "=". 





5862 297 GB 


5862 297 GB 





Components 


Motorised flue gas damper, part no. 7252 819 











150! ow on 
STB © N STB TR TR 





























(&) To control unit 
Flue gas damper motor 


Function check 

Press rotary button (C) on the motor 

and turn to the central position. 

m Enable the burner from the 
control unit > 
The rotary button should move 
towards " —". 
The motor moves the flue gas 
damper into the "OPEN" position. 


In emergency mode 








Colour coding to DIN/IEC 757 
BK black 


= Burner OFF > 
The rotary button should move 
towards "1". 
The motor moves the flue gas 
damper into the "CLOSED" 
position, which prevents air 
circulating through the boiler. 


Press rotary button (C) on the motor 
and turn clockwise to the limit stop 


ü 


beyond position "=". 


97 


Coding 


Resetting codes into the "as delivered condition" 





Code 1 


Calling up code 1 





98 

















. Press [4] and m| simultaneously 





for approx. 2 seconds. 


. Press (9. 


"Base setting? Yes", confirm 

with 69. 

Select "Base setting? Yes" with @ 
or "Base setting? No" with (2). 

















. Press |Ó| and || simultaneously 





for approx. two seconds. 


. Select the required coding address 


with (E) or (3; 

the address flashes; 
confirm with 69; 
the value flashes. 


. Change the value with @) or O; 


confirm with 69). 

Display briefly indicates "Adopted", 
then the address flashes again. 
Call up further addresses 


with @ or ©. 

















. Press |Ó| and || simultaneously 





for approx. one second. 


5862 297 GB 


5862 297 GB 


Code 1 (cont.) 


Summary 


Coding 





Coding in the delivered condition Possible change 


System diagram 





00:1 System version 1: 
One heating circuit 
without mixer A1, without 
DHW heating 


00: 


00: 


System version 1: 

One heating circuit without 
mixer A1, 

with DHW heating 


System version 2: 


One mixer circuit M2, 
without DHW heating 








Type of burner 
02:0 Single stage 


00: 


00: 


00: 


00: 


00: 


00: 


00: 


10 


02:1 


System version 2: 

One mixer circuit M2, 

with DHW heating 

System version 3: 

One heating circuit without 
mixer A1 and 

one mixer circuit M2, 
without DHW heating 
System version 3: 

One heating circuit without 
mixer A1, 

one mixer circuit M2, 

with DHW heating 

System version 4: 

2 Mixer circuits 

System version 4: 

2 Mixer circuits, 

with DHW heating 

System version 5: 

One heating circuit without 
mixer and 2 mixer circuits 
System version 5: 

One heating circuit without 
mixer and 2 mixer circuits, 
with DHW heating 


Two stage 








02:2 Modulating 


99 


Coding 


Code 1 (cont.) 


Coding in the delivered condition Possible change 


Max. boiler temp. 














06:85 Maximum limit of the 06:20 | Maximum limit of the 
boiler water temperature | to boiler water temperature 
set to 85 ?C 06 : 130 | adjustable from 20 to 130 °C 

DHW priority A1 

A2:2 DHW priority for heating A2:0 Without DHW priority for 
circuit pump heating circuit pump 

A2:1 No function 
A2:3 

to 

A2:15 


Summer econ. A1 





A5:5 With heating circuit pump |A5:0 Without heating circuit 
logic function pump logic function 


DHW-priority M2/M3 





DHW cylinder priority 
applicable to heating 
circuit pump and mixer 


Without DHW cylinder 
priority applicable to 
heating circuit pump and 
mixer 













DHW cylinder priority only 
applicable to mixer 


Reduced DHW priority 










Summer econ. M2/M3 


A5:5 With heating circuit pump |A5:0 Without heating circuit 
logic function pump logic function 


Flow min. temp. M2/M3 


C5: 20 Electronic minimum flow Minimum limit adjustable 
temperature limit 20 °C from 1 to 127 °C 





Flow max. temp. M2/M3 


C6: 75 Electronic maximum limit Maximum limit adjustable 
of the flow temperature from 1 to 127 °C 


set to 75 °C 


100 


5862 297 GB 


5862 297 GB 


Coding 


Code 2 


The summary from page 103 lists all possible coding addresses. 
The control unit display only shows those coding addresses, which may be 
adjusted in accordance with the relevant system version and equipment level. 


Y The coding addresses are grouped in 


System diagram accordance with the adjacent 
Cod. 00 sequence. 


Boiler/burner 
Cod. 02 to 33 


Domestic hot water 
Cod. 55 to 75 


o General 
Cod. 7F to 98 





Boiler circuit A1 
Cod. AO to FF 


Initially the possible coding 
addresses "AO" to "FF" for the 
Mixer circuit M2 heating circuit without mixer A1 are 
CORO tor scanned, then those for mixer 
circuits M2 and M3, again starting 


Mixer circuit M3 with coding address "AO". 
Cod. AO to FF 





101 


Coding 


Code 2 (cont.) 


Calling up code 2 


System diagram 


nv. 
Cod.2 LOLI 





102 

















. Press || and [rr» simultaneously 





for approx. two seconds; 
confirm with 69). 


. Select the required coding address 


with ®© or (3; 

the address flashes; 
confirm with 69; 
the value flashes. 


. Change the value with @) or ©; 


confirm with 69). 

The display briefly indicates 
" Adopted", then the address 
flashes again. 

Call up further addresses 


with ®© or ©. 














. Press [4] and [m4] simultaneously 





for approx. one second. 


5862 297 GB 


5862 297 GB 


Code 2 (cont.) 


Summary 


Coding 





Coding in the delivered condition 


Possible change 





System diagram (see page 99) 
Boiler/burner 


02: 0 Operation with a single 
stage burner 


03: 0 Do not adjust 


04: 0 Switching hysteresis 4 K 
(Kelvin) (see page 123) 


05: 8 


06: 85 Maximum limit of the 


boiler water temperature 
set to 85 ?C (without effect 


during DHW cylinder 
demand) 
Boiler/burner (two-stage) 
10: 20 Hook-up delay 
(integral) = 2 560 Ks 
(Kelvin x seconds) 





Operation with a two-stage 
burner 


Operation with a 
modulating burner 


Heat demand-dependent 
switching hysteresis 
(see page 123). 

ERB50 function 

(values from 6 to 12 K) 


ERB80 function 
(values from 6 to 20 K) 


Differential temperature 
adjustable from 0 to 40 K 


Maximum limit of the 
boiler water temperature 
adjustable from 20 to 130 °C 


Hook-up delay for enabling 
the 214 stage (from the 1st 
stage) in heating mode 
adjustable from 0 to 

25472 Ks 

1setting step ^ 128 Ks 


103 


Coding 


Code 2 (cont.) 


Coding in the delivered condition Possible change 


Boiler/burner (two-stage) (cont.) 


11: 20 Hook-up delay : Hook-up delay for enabling 
(integral) = 2 560 Ks the 24 stage (from the 1$t 
(Kelvin x seconds) stage) during cylinder 

loading adjustable from 0 

to 25472 Ks 

1 setting step ^ 128 Ks 


12: 20 Shutdown delay : Shutdown delay for 
(integral) = 2 560 Ks blocking the 15 stage 
(Kelvin x seconds) (to the 24 stage) 

adjustable 

from 0 to 25 472 Ks 

1 setting step ^ 128 Ks 





Boiler/burner 


13: 6"! |Shutdown differential 6 K : Without shutdown 
The burner is switched OFF differential 
when the set boiler water : Shutdown differential 


temperature is exceeded adjustable between 1 and 


20K 





Boiler/burner (modulating)"! 


15: 15 Actuator operating time : Operating time adjustable 
15 seconds from 7 to 180 seconds 


16: 6 Mod. burner offset 6 K Offset in case of start-up 
optimisation adjustable 
from 0 bis 15 K 

17: 12 Control amplification 12 : Adjustment subject to the 
modulating burner being 
matched to the respective 


18:300 | Integral time 300 : boiler type 


1A: 6 | Start-up optimisation Duration of start-up 

6 minutes optimisation adjustable 
from 0 bis 60 minutes 
"TThese adjustments are matched to Vitocrossal. 


104 


5862 297 GB 


5862 297 GB 


Coding 


Code 2 (cont.) 





Coding in the delivered condition Possible change 


Boiler/burner 


1F: 


21: 


23: 


24: 


26: 


28: 


29: 





With flue gas temp. sensor: 

The flue gas temperature is | 1F: "MAINTENANCE" will be 
not monitored displayed, if the adjustable 
flue gas temperature limit 
(from 1 to 500 ?C) has been 
exceeded 


No burner maintenance The number of hours run 
indication before the burner should 
be serviced is adjustable 
from 1 to 9999 hours 


No time interval for burner Time interval adjustable 
maintenance from 1 to 24 months 


No "Maintenance" display "Maintenance" display (the 
address is automatically 
set and must be manually 
reset after maintenance 


has been carried out) 


Burner fuel consumption 

(13 stage): 

No counting : Enter 1 to 9999; 

1 setting step ^ O.1 litres 
or gallons/h 

No burner interval ignition : The burner will be 


force-started for 30 
seconds after 5 hours 


Burner fuel consumption 

(2^2 stage): 

No counting 29: 1 |Enter 1 to 9999; 
to 1 setting step ^ O.1 litres 
29:9999 | or gallons/h 


105 


Coding 


Code 2 (cont.) 





Coding in the delivered condition 


Boiler/burner (cont.) 


32: 


33: 


70 


With control module V: 
Set boiler water 
temperature 70 ?C for 
external burner demand 


With control module V: 
During external burner 
demand, pumps and mixer 
remain in control mode 





Domestic hot water 


58: 


59: 


60: 


106 


20 


DHW heating, 
hysteresis +2.5K 


DHW temperature 
adjustable from 10 to 60 °C 


Without auxiliary function 
for DHW loading 


DHW cylinder loading: 


Starting point -2.5 K 
Shutdown point +2.5 K 


During DHW heating, the 
boiler water temperature is 
a max. of 20 K higher than 
the set DHW temperature 





Possible change 


Minimum set boiler water 
temperature adjustable 
from 0 to 127 °C; 

Note the adjustment of 
thermostat "(D" 


All pumps OFF, 
mixer close 


Adaptive DHW heating 
active 


DHW temperature 

adjustable from 10 to 95 °C 

A Safety instruction 

m Observe the max. 
permissible DHW 
temperature 

= Change the control 
thermostat setting "(i) " 


Input of a 24 set DHW 
value; adjustable from 1 to 
95 °C (observe coding 
address "56" and the 
section "Auxiliary 
function" on page 61) 


Starting point adjustable 
between 1 and 10 K below 
the set value 


The difference between the 
boiler water temperature 
and the set DHW 
temperature is adjustable 
between 10 and 50 K 


5862 297 GB 


5862 297 GB 


Coding 


Code 2 (cont.) 





Coding in the delivered condition Possible change 


Domestic hot water (cont.) 


61: 0 
62: 10 
64: 2 
66: 4 
68: 8 
69: 7 








The circulation pump will : Circulation pump starts 
be started subject to the immediately 
boiler temperature 


Circulation pump with a : Circulation pump without 
max. of 10 minutes run-on run-on 


Run-on time adjustable 
from 1 to 15 minutes 


During party mode: 





Enable constant DHW 64: 0 |No DHW heating, 
heating and DHW DHW circulation pump OFF 
circulation pump ON 64: 1 |DHW heating and DHW 


circulation pump acc. to 
time program 

Input of the set DHW 

value: 

at the programming unit : At programming unit 





and the Vitotrol 300 
remote control (if 
installed) 


At programming unit and 
remote control heating 
circuit A1 


At programming unit and 
remote control unit 
Mixer circuit M2 

At programming unit and 
remote control unit 
Mixer circuit M3 

At remote control unit 
Heating circuit A1 


At remote control unit 
Mixer circuit M2 


At remote control unit 
Mixer circuit M3 


Do not adjust 


107 


Coding 


Code 2 (cont.) 





Coding in the delivered condition Possible change 
Domestic hot water (cont.) 


DHW circulation pump ON |70: DHW circulation pump 
acc. to time program when output only subject to time 
DHW loading is enabled program 









1 















DHW circulation pump: 
ON acc. to time program 
OFF during DHW loading to 
the first set value 


ON during DHW loading to 
the first set value 


OFF during DHW loading to 
the second set value 


ON during DHW loading to 
the second set value 























During the time program 
1x/hr ON for five minutes 


to 
6x/hr ON for five minutes 


Constantly ON 













With control module V: 
DHW circulation pump ON 
for 5 minutes via volt-free 
contact 


74: 5 
Start-up time adjustable 
from 0 to 15 minutes 










75: 0 DHW circulation pump: 
ON during economy mode |75: 1 |OFF during economy mode 
acc. to time program 





108 


5862 297 GB 


5862 297 GB 


Coding 


Code 2 (cont.) 





Coding in the delivered condition Possible change 
General 






Detached house : Multi-occupancy house. 
Separate settings for 
holiday and time programs 
are possible for DHW 
loading (see page 62) for 
every heating circuit. 


















80: 1 A fault message is : Immediate fault message 
displayed, provided a fault 
persists for at least 5 
seconds 





The minimum fault 
duration, until a message is 
displayed, is adjustable 
from 10 to 995 seconds. 
1 setting step ^ 5 sec. 






81: 1 Automatic change between 
summer and winter 

Please note: 

Coding address "82" to 
"87" only possible if code 


"81: 1" has been selected. 
Summer starts: March : January 


to 
December 


Manual summer/winter 
changeover 










The application of the radio 
clock module will be 
recognised automatically 












Summer starts: 
last week of the month 


Summer starts: 
last day of the week 
(Sunday) 


Winter starts: 

October : January 
to 
December 


109 


Coding 


Code 2 (cont.) 





Coding in the delivered condition 


General (cont.) 


86: 5 
87: 7 
89: 1 
8A:175 
8E: 4 
90:128 


110 


Winter starts: 
last week of the month 


Winter starts: 
last day of the week 
(Sunday) 


Do not adjust 


Display of those codes 
which can be adjusted with 
your system version 


Displaying and 
acknowledging faults: 

at the programming unit 
and the remote control unit 
(if installed) 


Time constant for 
calculating the adjusted 
outside temperature 
21.3 hrs. 





Possible change 





Display of all codes, 
irrespective of system 
version or connected 
accessories 


At programming unit 


At programming unit and 
remote control unit 
Heating circuit A1 


At programming unit and 
remote control unit 
Mixer circuit M2 


At programming unit and 
remote control unit 
Heating circuit M3 


Quick (low values) or slow 
(high values) matching of 
the flow temperature 
subject to the set value if the 
outside temperature 
changes; 

1 setting step ^ 10 min 


5862 297 GB 


5862 297 GB 


Coding 


Code 2 (cont.) 





Coding in the delivered condition Possible change 
General (cont.) 






Without heating program 
changeover 


The heating program 
changeover (connection via 


plug [143]) affects: 


all heating circuits 














Heating circuit without 
mixer A1 


91: 2 | Mixer circuit M2 


91: 3 | Heating circuit without 
mixer A1 and mixer circuit 
M2 


Mixer circuit M3 


Heating circuit without 
mixer A1 and mixer circuit 
M3 


Mixer circuits M2 and M3 
92: 1 Including fault message 92: 0 |Without fault message 

















module module 
93: 0 Central fault message in 93: 1 |Central fault message in 
economy mode/service economy mode/service 
indication does not affect indication does affect 
central fault messages central fault messages 
94: 0 Without control module V : With control module V; 


will be recognised 
automatically 


95: 0 Without Vitocom 100 : With Vitocom 100 
communication interface communication interface; 

will be recognised 

automatically 


98: 0 Without expansion module | 98: 1 |With expansion module 
Viessmann 2-wire BUS Viessmann 2-wire BUS; 
will be recognised 


automatically 





111 


Coding 


Code 2 (cont.) 


Coding in the delivered condition Possible change 


Boiler circuit/mixer circuit 
A0: O0 Without remote control lao: 1 | With Vitotrol 200 


E With Vitotrol 300 













A2: 2 Without DHW cylinder 
applicable to heating circuit priority applicable to 
pump and mixer heating circuit pump and 

mixer 

With DHW priority 
applicable to mixer: 

The mixer is closed whilst 
DHW is loaded; the heating 
circuit pump operates 
Reduced priority appl. to 
mixer; i.e. the heating 
circuit receives a reduced 
amount of energy 

A3: 2 Outside temperature below Heating circuit pump 
1 9C: ON at OFF at 
Heating circuit pump ON : -10?C -8°C 
Outside temperature above : -9?C -7°C 
3 °C: : -89C -6°C 
Heating circuit pump OFF : -7°C -5°C 

- 6°C -4°C 

A When selecting a value : -5°C -3°C 

below 1°C there will be : - 4°C  -29C 

a risk of pipes outside : - 3°C -1°C 

the thermal insulation of : - 2°C 0°C 

the house freezing. : - 1°C 1°C 

Particularly the standby : 0°C 2°C 

mode should be : 1°C 3 °C 
observed, e.g. during to 

holidays. : 14°C  16?C 


*'Only adjustable for mixer circuit. 


112 


5862 297 GB 


5862 297 GB 


Code 2 (cont.) 


Coding 





Coding in the delivered condition 


Boiler circuit/mixer circuit (cont.) 


Possible change 





A4: 0 | With frost protection No frost protection, 
Adjustment only possible if 
code "A3: -9" has been 
selected. 

A Observe the note for 
coding address "A3". 

Ab: b | With heating circuit pump Without heating circuit 

logic function (economy pump logic function 
circuit): — — . With heating circuit pump 
heating circuit pump OFF, if logic function: 
the outside temperature Heating circuit pump OFF, if 
(AT) is 1 K higher than the AT > Ra +5 K 
set room temperature AT> RT 44K 
(RT set) AT > RT set +3 K 
AT > RT set + 1 K AT > RTset +2 K 
AT > RTge¢ + 1K 
AT = Ri set 
AT > RT set -1K 
to 
AT > RTset -9K 
A6: 36 Extended economy circuit Extended economy circuit 


not active 





active, i.e. the burner and 
heating circuit pump will 
be switched OFF, and the 
mixer will be closed at a 
variable value, which is 
adjustable between 5 and 
35 °C plus 1 °C. 

This value is based on the 
adjusted outside 
temperature, comprising 
the actual outside 
temperature and a time 
constant which takes the 
cooling down of an 
average building into 
consideration. 


113 


Coding 


Code 2 (cont.) 


Coding in the delivered condition Possible change 


Mixer circuit 


A7: 0 Without mixer economy : With mixer economy 
function function 

(extended heating circuit 

pump logic): 

Heating circuit pump also 

OFF, if the mixer was 

closed longer than 12 mins. 

Heating circuit pump ON, 

m if the mixer changes to 
control mode 

or 

m after DHW cylinder 
loading (for 20 minutes) 

or 

m if there is a risk of frost 





Boiler circuit/mixer circuit 


A9: 0 |Without pump idle period : Incl. pump idle period: 
Heating circuit pump OFF 
during set value 
modification (by changing 
the operating mode or 
changes on the rotary 


selector "938" or key 


"4237 





114 


5862 297 GB 


5862 297 GB 


Code 2 (cont.) 


Coding in the delivered condition Possible change 


Boiler circuit/mixer circuit (cont.) 


Coding 





Heating mode: 
weather-compensated 
Reduced mode: 

with room temperature 
hook-up 





Heating mode: 

with room temperature 
hook-up 

Reduced mode: 
weather-compensated 





b0: 0*1 | Incl. remote control: 
Heating mode/ 
reduced mode: bo: 
weather-compensated 
bO: 
bo: 
bi: 0 Do not adjust 










With remote control and for 
the heating circuit, heating 
with room temperature 
hook-up must be encoded: 
Room influencing factor 8 





Heating mode/reduced 
mode: 

with room temperature 
hook-up 


Excluding room influence 






Room influencing factor 
adjustable between 1 and 
31 





Do not adjust 








*IChange the code for the heating circuit without mixer A1 for boilers without lower 
temperature limit or for mixer circuit, if the remote control affects that heating circuit. 


115 


Coding 


Code 2 (cont.) 


Coding in the delivered condition Possible change 


Boiler circuit/mixer circuit (cont.) 


b7: 





Incl. remote control: 

Without room temperature- : m Heating circuit pump 

dependent heating circuit OFF, if the actual room 

pump logic function temperature (RTactual) is 
2.5 K higher than the set 
room temperature (RT ge) 
RTactual>RTset 42.5 K 

m Heating circuit pump ON, 
if the actual room 
temperature (RTactual) is 
1.5 K higher than the set 
room temperature (RT ge) 
RTactual>RTset +1.5 K 


With remote control and for 


the heating circuit, heating 

with room temperature 

hook-up must be encoded: 

Without quick heat-up/ : With quick heat-up/ 
quick setback quick setback 

(see page 57). 


With remote control and for 

the heating circuit, heating 

with room temperature 

hook-up must be encoded: 

Without start-up : With start-up optimisation 
optimisation (max. offset 2 hrs. 30 mins.) 





With start-up optimisation 
(max. offset 15 hrs. 50 mins.) 


""Change the code for the heating circuit without mixer A1 for boilers without lower 
temperature limit or for mixer circuit, if the remote control affects that heating circuit. 


116 


5862 297 GB 


5862 297 GB 


Coding 


Code 2 (cont.) 





Coding in the delivered condition Possible change 
Boiler circuit/mixer circuit (cont.) 


With remote control and for 

the heating circuit, heating 

with room temperature 

hook-up must be encoded: 

Heat-up gradient : Heat-up gradient start-up 
Start-up optimisation optimisation adjustable 

10 minutes/Kelvin : from 11 to 255 mins/Kelvin 


With remote control and for 

the heating circuit, heating 

with room temperature 

hook-up must be encoded: 

Without learning start-up : With learning start-up 
optimisation optimisation 

Incl. remote control: 

Without shutdown : With shutdown 
optimisation optimisation (max. offset 
1 hour) 

With shutdown 
optimisation (max. offset 
2 hours) 

Incl. remote control: 

Without shutdown : With shutdown 
optimisation optimisation (max. offset 10 
to 120 mins.) 

1 setting step ^ 10 min 


Incl. remote control: 
Without learning shutdown |C2: 1 | With learning shutdown 
optimisation optimisation 


""Change the code for the heating circuit without mixer A1 for boilers without lower 
temperature limit or for mixer circuit, if the remote control affects that heating circuit. 





117 


Coding 


Code 2 (cont.) 


Coding in the delivered condition Possible change 


Mixer circuit 


C4: 1 Mixer algorithm : Mixer algorithm 
Standard faster 

Mixer algorithm 

slower 






Boiler circuit/mixer circuit 


C5: 20 Electronic minimum flow : Minimum limit adjustable 
temperature limit 20 °C from 1 to 127 ?C 


Mixer circuit 





C6: 75 Electronic maximum flow |C6: 1 |Max.temperature limit 
temperature limit 75 °C to adjustable between 1 and 
C6:127 | 127°C 





C7: 0 With return temperature 


sensor: 
Without return temperature | C7: 1 | Spread adjustable 
sensor influence to between 1 and 31K 


C7: 31 | Spread = temperature 
differential between the 
flow and return 
temperature at the design 








point —10 °C 
Boiler circuit/mixer circuit 
C8: 31"! | With remote control and for 
the heating circuit, heating 
with room temperature 
hook-up must be encoded: 
Without room influence C8: 1 |Room influence limit 
limit to adjustable between 1 and 
C8: 30 |30K 





""Change the code for the heating circuit without mixer A1 for boilers without lower 
temperature limit or for mixer circuit, if the remote control affects that heating circuit. 


118 


5862 297 GB 


5862 297 GB 


Code 2 (cont.) 


Coding 





Coding in the delivered condition 


Mixer circuit 


C9: 0 


Control of an underfloor 
heating system by flow and 
return temperature sensor: 


Without heat-up phase 





Boiler circuit/mixer circuit 


E1: 1 


E2: 50 


E5: 0 


E6:100 


E7: 20 


E8: 0 


With remote control: 

Set day value is adjustable 
at the remote control from 
10 to 30 °C 


With remote control and for 
the heating circuit, heating 
with room temperature 
hook-up must be encoded: 
No display correction of the 
actual room temperature 


Without variable speed 
heating circuit pump 


Max. speed of the variable 
speed pump = 100 % of 
max. speed in standard 
mode 


Min. speed of the variable 
speed pump = 20 % of max. 
speed 


Min. speed subject to the 
setting in coding address 
"ET" 





Possible change 


With optimisation during 
the heat-up phase (via 
coding address "C7") 


Set day value adjustable 
from 3 to 23 °C 


Set day value adjustable 
from 17 to 37 ?C 


Display correction -5 K 
to 
Display correction -0.1 K 





Display correction «0.1 K 
to 
Display correction 44.9 K 


With variable speed 
heating circuit pump; 
will be recognised 
automatically 


Maximum speed 
adjustable from 0 to 100% 
of max. speed 


Minimum speed adjustable 
from 0 to 10096 of max. 
speed 


Speed subject to the 
setting in coding address 
"Eg" 


119 


Coding 


Code 2 (cont.) 


Coding in the delivered condition Possible change 


Boiler circuit/mixer circuit 


E9: 20 Speed of the variable : Speed adjustable from 0 to 
speed pump - 20 96 of 100 96 of max. speed 
max. speed in reduced 
mode 


F0: 0 Do not adjust 


F1: 0 Screed drying function : Screed drying function 
inactive adjustable in accordance 

with four temperature-time 

profiles 

(see page 122). 


Please note: 
Observe the screed 
supplier's instructions. 


Observe DIN 4725-2. 

The report to be provided 

by the heating contractor 

must contain the following 
heat-up details: 

m Heat-up data with their 
respective flow 
temperatures 

m Max. flow temperature 
achieved 

m Operating condition and 
outside temperature 
during handover 


The function continues 
after power failure or after 
the control unit has been 
switched off. 

Heating program "M =” 
will be started, after the 
screed-drying function has 
been completed or if the 
address is manually set to 
"o". 





120 


5862 297 GB 


5862 297 GB 


Coding 


Code 2 (cont.) 


Coding in the delivered condition Possible change 


Boiler circuit/mixer circuit 


F2: 0 No time limit for party : Time limit for party mode 
mode"! adjustable between 1 and 
12 hours"! 


"TThe party mode ends automatically in heating program "I= ", when the system 
changes over to operation with standard room temperature. 





121 


Coding 


Screed drying function diagram 


Coding see page 120. 
Temperature-time profile 1 (code "F1:1") 


50 
40 
30 
20 
10 


temperature °C 


[ 


Flow 


1 5 10 15 20 25 30 
Days 


Temperature-time profile 2 (code "F1:2") 


temperature ?C 


-NUU ROI 
oOooooo 


Flow 


1 5 10 15 20 25 30 
Days 


Temperature-time profile 3 (code "F1:3") 


50 
40 
30 
20 
10 


temperature °C 


f 


Flow 


1 5 10 15 20 25 30 
Days 


Temperature-time profile 4 (code "F1:4") 


temperature ?C 


-NUU BO 
oOooooo 


5862 297 GB 


Flow 


1 5 10 15 20 25 30 
Days 


122 


5862 297 GB 


Coding 


Burner switching hysteresis 


Coding see page 103. 


Switching hysteresis 4 K (code "04:0") 


aton i i 

D 1 

E i [ 

a loff i i Time 
I 


ie CD AA A 
ER SPER REO 


low average high 
heat demand heat demand heat demand 


Heat demand-dependent switching hysteresis 


ERB5O function (code "04:1") 
Subject to heat demand, values between 6 and 12 K result. 


T On ! 
£ | 
a loff i Time 


+9 
TA AA AE 
ge EI a 
SiL T- 0707-4 — NÉ NS 


low average high 
heat demand heat demand heat demand 


ERB80 function (code "04:2") 
Subject to heat demand, values between 6 and 20 K result. 





low average high 
heat demand heat demand heat demand 


The heat demand-dependent switching hysteresis, therefore, takes the boiler 
load into account. 

The switching hysteresis, i.e. the burner operating time is varied, subject to 
current heat demand. 


123 


Parts list 


Parts list 


When ordering spare parts: 
Quote the type and serial no. (see 
type plate) and the item no. of the 
required part (as per parts list). 
Obtain common parts from your 
local supplier. 


Parts 
001 Cable clamp 
004 Stop dial for control 
thermostat "(D" 
005 Cover plug for high limit safety 
cut-out ” r” 
010 Fascia cover 
011 Control panel lower r.h. side 
013 Upper casing body (drawer) 
014 PCB cover, comp. 
015 Programming unit flap 
016 Lower casing body 
017 Rear cover 
018 Programming unit 
019 Front panel with heating circuit 
selector keys 
020 Ribbon cable, 14 PIN 
023 Fuse holder for control fuse 
024 Fuse holder cap for control fuse 
030 High limit safety cut-out ” tr” 
031 Control thermostat "(D" 
033 Control thermostat rotary 
button "(" 
035 Push buttons, 1-pole 
(test button "TÜV") 
036 Switch, 2-pole 
(mains switch "(»") 
040 Outside temperature sensor | 1 
042 Boiler temperature sensor with 
plug [3] 
043 DHW cylinder temperature 
sensor with plug |5 
050 Printed circuit board 
051 Optolink circuit board 
052 Main PCB 
053 Fault message module 





























124 


054 Power supply unit PCB 

056 Expansion module Viessmann 
2-wire BUS 

065 Burner connection cable with 
plug [41| (for boilers with 
oil-/gas-fired pressure jet 
burners) 























070 Mains power cable with plug [40 





071 5-core burner connection cable 
with plug [41| (for boilers with 
intermittent ignition system) 

072 6-core burner connection cable 
with plug [41] (for boilers with 
intermittent ignition system) 

074 Connection cable 

090 Fuse 4 amp (slow)/250 V~ 

091 Fuse 6.3 amp (slow)/250 V~ 

092 Fuse holder 

098 Strain relief pack 




















Parts not shown 

080 Installation and service 
instructions 

081 Operating instructions 

099 Fixing pack 

100 Plug for sensors (3 pieces) 

101 Plug for pumps (3 pieces) 

102 Plug [52] (3 pieces) 

103 Plug |156| (3 pieces) 

104 Mains connection plug [40 
(3 pieces) 

105 Plug [150 


















































108 Plug [143], plug [145] and plug [146 























109 Burner plug [41], [20], [151] and [191 








5862 297 GB 


Parts list 


Parts list (cont.) 


013 


074 


018 





019 020 


N 
LO 
eo 


010 


N 





N 


036 030 031 


023 





il 


033— —1» 
^ 
024 091 


004 


zZz 
z 
q 
= 
If, 
P f 
5 


89 467 Z989 


125/126 


Connection and wiring diagram 


Connection and wiring diagram 


89 467 7989 





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127/128 


5862 297 GB 


Connection and wiring diagram 


Connection and wiring diagram (cont.) 
































































































































A1 Main PCB 28 DHW circulation pump 
A2 Power supply unit PCB (on site) 
A3 Printed circuit board 40 Mains connection, 50 Hz 
A4 PCB heating circuit selection 41 Oil-/gas-fired burner 
keys (connection acc. to DIN 4791) 
A5 Programming unit 50 Central fault message 
A6 Boiler coding card 150 External connections 
A7 Fault message module (8) External safety equipment 
A11 PCB Optolink/emissions test (remove jumper when 
switch connecting) 
A12 Expansion module (b) External blocking (remove 
Viessmann 2-wire BUS jumper when connecting) 
F1, F2 Fuses © External burner start 
F6 High limit safety cut-out "tr" (1st stage) 
110 °C (100 °C) 156 Mains output for accessories 
F7 Control thermostat ,,(i)” 75 °C 
(87 °C, 95 °C) Low voltage plug 
K1-K5 Relay 1 Outside temperature sensor 
S1 Mains ON/OFF switch "(»" 3 Boiler temperature sensor 
$2 TUV test button 5 DHW cylinder temperature 
S3 Emissions test switch ""4” sensor 
V1 Fault lamp (red) s][BB] 24 DHW cylinder 
V2 ON/OFF lamp (green) temperature sensor 
15 Flue gas temperature sensor 
Plug 230 V- (accessory) 
20 Heating circuit pump A1 143 Telephone contact 
(accessory) 145 KM BUS user, e.g. Vitotrol 
21 Circulation pump for DHW remote control 
cylinder loading (accessory) 191 Two-stage/mod. burner 
extension 


The fitted control thermostat and high limit safety cut-out comply with the 
requirements of DIN 3440 





Type and make DIN Reg. no. Time 
constant 
Control TR 55.18015.050, Messrs. EGO | DIN TR 11032002 | t<45 sec 
thermostat or EM-1/b1; 60002847, or 


Messrs. Juchheim DIN TR 77798 


High limit STB 56.10525.570, Messrs. EGO| DIN STB 10602000 | t«45 sec 
safety cut-out | or EM-80-V/b7-1; 60002843, or 









Messrs. Juchheim DIN STB 82699 


129 


Appendix 


Specification 


Rated voltage: 
Rated frequency: 
Rated current: 
Power 
consumption: 
Safety class: 
Protection: 


Function: 


Permissible 
ambient 
temperature 

m in operation: 


m in storage 
and transport: 


130 


230 V~ 
50 Hz 
6 amp ~ 


5W 

l 

IP 20 D acc. to 

EN 60529, safeguard 
through appropriate 
design and 
installation 

Type 1 B acc. to 

EN 60730-1 


0 to 40 °C 
Installation in living 
accommodation and 
boiler rooms 
(normal ambient 
conditions) 


-20 to 65 °C 


Rated capacity of relay outputs at 


230 V~ for 

m Heating circuit 
pump [29]: 

m Circulation pump 
for DHW cylinder 
loading [21]: 

= DHW circulation 
pump [2]: 

m Burner 
Plug |41|: 
Plug [90]: 
— two stage: 
— modulating: 

m Central fault 
message [50]: 

m Total: 

*1 Total max. 4 A~ 
































4 (2) A~*1 


4 (2) A~*1 
4 (2) A~*1 
4 (2) A~ 


1 (0.5) A~ 
0.1 (0.05) A~ 


4 (2) A~*1 
max. 6 A~ 


5862 297 GB 


5862 297 GB 


Settings and equipment 
Tick off the adjusted function. 


Function in as delivered condition 
High limit safety cut-out "zr" set to 110 °C 


Control thermostat "(D" set to 75 °C 


Remote control 
Control unit without remote control 


Electronic maximal limit 
m Heating circuit A1 without mixer 85 °C 
m Mixer circuit M2 75 °C 
= Mixer circuit M3 75 °C 


Electronic minimum limit 

m Heating circuit A1 without mixer 20 °C 
m Mixer circuit M2 20 °C 

m Mixer circuit M3 20 °C 


Heating curves 
m Slope-1.4 
m Level=0 


m Differential temperature 8 K 


Appendix 


Modified function 
Changed to .......9C 














Changed to ......?C 


With remote control 

Vitotrol 200 to heating circuit A1 
Vitotrol 200 to mixer circuit M2 
Vitotrol 200 to mixer circuit M3 
Vitotrol 300 to heating circuit A1 
Vitotrol 300 to mixer circuit M2 
Vitotrol 300 to mixer circuit M3 
















































































Changed to .......?C 
Changed to ue 
Changed to ;9C 
Changed to ...........°C 
Changed to °C 
Changed to °C 








Heating curves for: 
Heating circuit A1 without mixer: 
Changed to 

— Slope ..... 

— Level ...... 
Mixer circuit M2: 
Changed to 

— Slope ..... 

— Level ...... 
Mixer circuit M3: 
Changed to 

— Slope ..... 

— Level ...... 


















































Changed to „K 


131 


Appendix 


Settings and equipment (cont.) 


Function in as delivered condition 


Heating circuit pumps 

In heating program "M =”, the 

heating circuit pumps are 

switched OFF, when the outside 
temperature exceeds the set room 

temperature by more than 1 K. 

In heating program "4" 

— the heating circuit pumps are 
only started when there is a risk 
of frost, 

— any connected mixer stays 
closed (when there is a risk of 
frost, it changes to control 
mode). 


Heating circuit A1 without mixer 
Heating mode/reduced mode 
weather-compensated 


132 



















































































Modified function 


The heating circuit pump A1 remains 
ON 

The heating circuit pump mixer 
circuit M2 remains ON 

The heating circuit pump mixer 
circuit M3 remains ON 

The heating circuit pump heating 
circuit A1 or mixer circuit M2 or 
mixer circuit M3 will be switched 
OFF, when the actual room 
temperature exceeds the set room 
temperature by more than 3 K 

The heating circuit pump mixer 
circuit M2 will be switched OFF, if the 
"Mixer close" impulse has been 
received for 12 minutes 

The heating circuit pump mixer 
circuit M3 will be switched OFF, if the 
"Mixer closed" impulse has been 
received for 12 minutes 


Heating mode: weather-compensated, 

Red. mode: with room 
temperature hook-up 

Heating mode: with room 
temperature hook-up, 


Red. mode: weather-compensated 
Heating mode/ 
Red. mode: with room 


temperature hook-up 


5862 297 GB 


5862 297 GB 


Appendix 


Settings and equipment (cont.) 


Function in as delivered condition | Modified function 


Mixer circuit M2 

Heating mode/reduced mode Heating mode: weather-compensated, 

weather-compensated Red. mode: with room temperature 
hook-up 

Heating mode: with room temperature 
hook-up, 

Red. mode:  weather-compensated 

Heating mode/ 

Red. mode: with room temperature 









































hook-up 
Mixer circuit M3 
Heating mode/reduced mode Heating mode: weather-compensated, 
weather-compensated Red. mode: with room temperature 
hook-up 
Heating mode: with room temperature 
hook-up, 
Red. mode:  weather-compensated 
Heating mode/ 











Red. mode: with room temperature 
hook-up 

Frost protection 
Frost protection active from 1 °C Frost protection for heating circuit A1 
cancelled 
Frost protection for mixer circuit M2 
cancelled 
Frost protection for mixer circuit M3 
cancelled 
Frost protection for heating circuit A1 
changed to... PC 
Frost protection for mixer circuit M2 
changed to ............. °C 
Frost protection for mixer circuit M3 
changed to............... °C 









































Switching hysteresis 
Burner switching hysteresis is 4 K ERB5O function 
ERB80 function 




















133 


Appendix 


Settings and equipment (cont.) 


Function in as delivered condition 


Heating system with DHW heating: 
= DHW is loaded from the times 
when DHW heating is enabled 


m With DHW priority 


Heating system with DHW heating 

(cont.): 

m Setting range for DHW temperature 
10 to 60 ?C 


m The circulation pump starts when 
the boiler water temperature is 7 K 
higher than the actual DHW 
temperature 


m The circulation pump for DHW 
cylinder loading runs on for a max. 
of 10 minutes after loading 


m Without adaptive DHW cylinder 
control 


m Circulation pump ON only during 
active DHW cylinder loading 


m Without auxiliary function for DHW 
loading 


134 


Modified function 








Without DHW priority 





Setting range for DHW 
temperature 10 to 95 ?C 














Circulation pump starts 
immediately 














Changed to .............. minutes 








With adaptive DHW cylinder 
control 











DHW circulation pump ON acc. to 
its individual time program 











With auxiliary function for DHW 








loading, input of a 2^2 set value 
Of cx OC 


5862 297 GB 


5862 297 GB 


Appendix 


Settings and equipment (cont.) 


Connected accessories 

Mixer circuit M1 extension kit 
Mixer circuit M2 extension kit 
Control module V 

KM BUS distributor 

Radio clock receiver 

Return temperature sensor 
Flue gas temperature sensor 
High limit thermostat for 
underfloor heating 

Expansion module Viessmann 
2-wire BUS 

Vitocom 100 

Vitocom 200 

Vitocom 300, type FA2 
Two-stage/modulating burner 
extension 

Vitoair 

Motorised flue gas damper 





































































































135 


Appendix 


Keyword index 


A 

Actual temperatures, scanning, 37 
Adaptive DHW heating, 64 
Applicability, 3 

Automatic mode, 62 

Auxiliary circuits for DHW loading, 62 
Auxiliary function for DHW loading, 
61, 106 


B 

Boiler coding card, 18, 37, 95 
Boiler temperature control, 54 
Boiler temperature sensor, 12, 68 
Brief scan, 37 

Burner, 

m connecting, 24 

m connection cables, 95 

m external start-up/shutdown, 21 
m switching hysteresis, 103, 123 


C 

Calling up fault messages, 42 

Central fault message, 22, 111 

Coding, 

m code 1, calling up, 98 

m code 2, calling up, 102 

m overview, 103 

m resetting codes to as delivered 
condition, 98 

Coding summary, 103 

Commissioning, implementation, 30 

Components, 65 

Connection and wiring diagram, 127 

Contact temperature sensor, 81 

Control module V, 91, 111 

Control thermostat, 17, 67 


D 

Date, 39 

DHW circulation pump, 62 

DHW cylinder temp. sensor, 68 
DHW cylinder thermostat, 61 
DHW cylinder priority, 63, 112 
DHW loading auxiliary circuits, 62 


136 


DHW loading auxiliary function, 61, 
106 

DHW loading time program, 61 
DHW set temperature, 62, 106 
Diagnosis, 42 

Differential temperature, 59, 103 
Display contrast, 36 

Domestic hot water loading, 61 
Draught stabiliser, Vitoair, 96 


E 

Economy circuit, 57, 113 

Electronic maximum temperature 
limiter, 100, 118 

Emergency mode, 97 

Emissions test switch, 65 
Expansion module Viessmann 2-wire 
BUS, 67, 111 

Extended economy circuit, 58, 113 
Extension kit for mixer circuit, 71 
Extension two-stage/modulating 
burner, 26 

External blocking, 21 

External safety equipment, 21 
External start-up, 21 


F 

Fascia cover, 65 

Fault codes, 44 

Fault display, hiding, 42 

Fault history, 50 

Fault memory, 50 

Fault message module, 65, 111 
Fault messages, calling up, 42 
Faults with fault displays, 42 
Flow temperature sensor, 81 
Flue gas temperature sensor, 71, 105 
Frost protection, 58, 113 

Fuel consumption, 39, 105 
Fuses, 65 


5862 297 GB 


5862 297 GB 


Keyword index (cont.) 


H 

Heating circuit allocation, 30 
Heating circuit control unit, 56 
Heating circuit pump logic 
function, 57, 113 

Heating circuit pump, var. speed, 119 
Heating curves, 33 

Heating system version, 5 

Hiding a fault display, 42 

High limit safety cut-out, 15, 31, 66 
High limit thermostat, 82 

Holiday program, scanning, 39 
Hook-up delay, 103 

Hours run, 39 


K 
KM BUS distributor, 93 


L 
Language selection, 31 
Level (heating curve), 33 


M 

Main PCB, 65 

Mains power connection, 27 

Mains power distributor, 94 
Maintenance, 105 

Maintenance scan, 40 

Max. temperature limit, 100, 103, 118 
Minimum temperature limit, 100, 118 
Mixer extension, 72 

Mixer motors 

m coding, 80 

m rotational direction — changing, 78 
m installation examples, 79 

Mixer circuit, system dynamics, 58 
Mixer economy function, 114 
Motorised flue gas damper, 97 
Multi-occupancy house, 62 


Appendix 


o 

Operating conditions, scanning, 39 
Optolink/circuit board, 65 

Outside temperature sensor, 12, 69 


P 

PCBs, 65 

Parts list, 124 

Party mode, 107, 121 

Plug [50], 21, 90 

Power supply unit PCB, 65 
Printed circuit board, 65 
Programming unit, 66 
Pump idle period, 114 





Q 
Quick heat-up/quick setback, 57, 116 


R 

Radio clock receiver, 70 

Relay test, 32 

Remote control units, 83, 85, 112 
Return temperature sensor, 81, 118 
Room influence, 115, 118 

Room set temp. adjustment, 35 
Room temperature hook-up, 115 
Room temperature sensor, 89 
Rotational direction — mixer motor, 78 


137 


Appendix 


Keyword index (cont.) 


S 

Safety, 2 

Safety equipment, 21 

Set temperatures, scanning, 37 
Set values, scanning, 37 
Scanning, 37 

Screed drying function, 58, 120, 122 
Service level summary, 36 

Set DHW temperature, 62, 106 
Set room temp. adjustment, 35 
Settings and equipment, 131 
Shutdown delay, 104 

Shutdown optimisation, 117 
Slope (heating curve), 33 
Start-up optimisation, 104, 116 
Specification, 130 
Summer/winter changeover, 109 
Switching hysteresis, 103, 123 
System dynamics - mixer circuit, 58 
System equipment, 131 

System versions, 5, 99 


138 


T 
Time, 39 

Time program, 56 
Temperature scanning, 37 
TUV key, 66 


U 
Underfloor heating, 58, 119 


V 

Variable speed htg. circuit pump, 119 
Viessmann 2 wire BUS, 67, 111 
Vitoair draught stabiliser, 96 
Vitocom 100, 111 

Vitotrol 200, 83, 112 

Vitotrol 300, 85, 112 


Ww 

Weather-compensated mode, 115 
Winter/summer, 109 

Wiring diagram, 127 

Work on the equipment, 2 


Viessmann Werke GmbH&Co 
D-35107 Allendorf 

Tel: +49 6452 70-0 

Fax: | 449 6452 70-2780 
www.viessmann.de 


Viessmann Limited 
Hortonwood 30, Telford 
Shropshire, TF1 7YP, GB 

Tel: +44 1952 675000 

Fax: +44 1952 675040 

email: info-uk@viessmann.com 


Subject to technical modifications. 


5862 297 GB 


Printed on environmentally friendly, 


chlorine-free bleached paper. 


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