Viessmann VITOTRONIC 200 Service Instructions Manual page 281

Main and expansion PCB
Plug sYA
Terminals Function
211.2 /
Secondary pump
Note
:
The secondary pump is connected di-
rectly to the EEV PCB: See chapter
"EEV PCB [4-6] / [4-7]".
211.3 Control of instantaneous heating wa-
ter heater, stage 1
1.
r
211.4
3-way diverter valve "Central heat-
r M
■
ing/DHW heating"
:
Circulation pump for cylinder heat-
■
ing
:
Cylinder loading pump
■
:
2-way shut-off valve
■
M
211.5
NC Control of cooling
:
Natural cooling function
AC /
3-way diverter valves for heating wa-
ter buffer cylinder bypass with the ac-
tive cooling function
Plug
sYS
Terminals Function
212.1 Control of cooling
AC :
Active cooling function
212.2 Heating circuit pump for heating cir-
cuit without mixer A1/HC1
A1
(cont.)
:
:
PCBs and connection options
Explanation
In systems without a buffer cylinder, no other heating
■
circuit pump is required: See terminal 212.2.
Connect a temperature limiter to restrict the maximum
■
temperature for underfloor heating circuits (if instal-
led) in series.
Connection values
Output: 140 W
■
Voltage: 230 V~
■
Max. switching current: 4(2) A
■
Connection values
Output: 10 W
■
Voltage: 230 V~
■
Max. switching current: 4(2) A
■
Connection values
Output: 130 W
■
Voltage: 230 V~
■
Max. switching current: 4(2) A
■
Note
Depending on the heat pump and system version, not
all components may be installed: See "DHW heating
connections".
:
NC-Box (accessories) or on-site components for NC
cooling
/ :
Connect the 3-way diverter valves in parallel.
Connection values
Output: 10 W
■
Voltage: 230 V~
■
Max. switching current: 4(2) A
■
Explanation
AC-Box or on-site components for AC cooling
Connection values
Output: 10 W
■
Voltage: 230 V~
■
Max. switching current: 4(2) A
■
This pump is connected in addition to the secondary
■
pump if a buffer cylinder is installed.
Connect a temperature limiter to restrict the maximum
■
temperature for underfloor heating circuits (if instal-
led) in series.
Connection values
Output: 100 W
■
Voltage: 230 V~
■
Max. switching current: 4(2) A
■
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