Controller And Sensor Pcb (Lv Connections) - Viessmann Vitocal 222-G Installation And Service Instructions Manual

Electrical connections
Terminals Function
X3.8 Pressure switch, primary circuit
X3.9 and/or
P
Frost stat
or
Jumper
X3.18 Heat pump control unit power supply
X2.1 230 V~
X1.1

Controller and sensor PCB (LV connections)

Set the required parameters during commissioning:
see page 42 onwards.
Plug Sensor
F0.1/F0.2 Outside temperature sensor
F0.2/F0.3 Radio clock receiver
F4 Buffer temperature sensor
F11 Contact humidistat 24 V
Note
If the contact humidistat of the NC-Box is used when cooling, set jumper,
otherwise the heat pump will not start (message "CA Protectn device prim-
ry").
F13 Flow temperature sensor, system (downstream of heating water buffer cylin-
der)
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
■
aVG KM BUS (wires interchangeable)
Use the KM BUS distributor (accessories) if several devices are connected.
KM BUS subscriber (examples):
Extension kit, mixer for heating circuit M2/HC2
■
Remote control Vitotrol 200A or Vitotrol 300B (set the heating circuit assign-
■
ment at the remote control)
EA1 extension, AM1 extension
■
Communication interface Vitocom 100, type GSM2
■
Modbus 2 (wires not interchangeable)
sVA
Connection for electricity meter of photovoltaic system
J3 Jumper for terminator Modbus 2
Terminator enabled (delivered condition)
Terminator disabled
(cont.)
–
Explanation
Requires floating N/C contact:
Closed: Continuous safety chain
■
Open: Safety chain interrupted; heat pump shut down
■
Breaking capacity 230 V~, 0.15 A
■
Connection:
Connected in series if both safety components are in-
■
stalled
Insert jumper if no safety components are instal-
■
led.
See chapter "Power supply".
Installation sequence
Type
NTC 10 k
Ω
DCF
NTC 10 k
Ω
―
NTC 10 k
Ω
NTC 10 k
Ω
NTC 10 k
Ω
—
—
—
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