Viessmann Vitocal 200-G Series Installation And Service Instructions Manual page 36

Installation sequence
Electrical connection
Terminals Function
X3.8
X3.9
Pressure switch, primary circuit
P
and/or
Frost stat
or
Jumper
X3.12 "External demand" signal: External
X3.13 starting of compressor and pumps;
or at external mixer in control mode or OPEN,
EA1 extension changeover of the operating status of
several system components
X40 Heat pump control unit power supply:
Phase L or L1
X40.
?
X40.N Neutral conductor terminal
Controller and sensor PCB (extra low voltage (ELV) connections)
Set the required parameters during commissioning:
See page 55 onwards.
Plug Sensor/component
F0 Outside temperature sensor
F4 Buffer temperature sensor
F6 Top cylinder temperature sensor
(X25.5/X25.6)
F7 Cylinder temperature sensor, bottom
(X25.7/X25.8)
F12 Flow temperature sensor, heating circuit with mixer M2/HC2
F13 System flow temperature sensor (downstream of the buffer cylinder and mix-
er for external heat generator)
F14 Flow temperature sensor, cooling circuit: Heating circuit without mixer
A1/HC1 or separate cooling circuit SKK
F16 Room temperature sensor, cooling circuit
Required for separate cooling circuit SKK
■
Recommended for heating/cooling circuit without mixer A1/HC1
■
F20 Boiler water temperature sensor, external heat generator
36
(cont.)
Earth conductor terminal
Explanation
Requires floating contact:
Closed: Safety chain has continuity
■
Open: Safety chain interrupted; heat pump shut down
■
Breaking capacity 230 V~, 0.15 A
■
Connection:
Connected in series if 2 safety components are instal-
■
led
Insert jumper if no safety components are instal-
■
led.
Requires floating contact:
Closed: Demand
■
Open: No demand
■
Breaking capacity 230 V~, 2 mA
■
Note
These and further external functions (e.g. provision of
external set values) can alternatively be connected via
the external EA1 extension.
See "EA1 extension" installation instructions
Power supply 230 V~: See chapter "Power supply".
Type
NTC 10 k
Ω
NTC 10 k
Ω
NTC 10 k
Ω
NTC 10 k
Ω
NTC 10 k
Ω
NTC 10 k
Ω
NTC 10 k
Ω
NTC 10 k
Ω
NTC 10 k
Ω