41
Indoor unit: Controller and sensor PCB (LV connections)
Set the required parameters during commissioning:
See page 68 onwards.
Sensors
Plug Sensor Type
F0 Outside temperature sensor NTC 10 kΩ
F4 Buffer temperature sensor NTC 10 kΩ
F11 Contact humidistat 24 V
Or jumper
Note
■
System with heating water/coolant buffer cylinder:
If cooling is performed via several heating/cooling circuits, provide a contact
humidistat for each heating/cooling circuit.
Connect several contact humidistats in series.
■
If using just one 230 V~ contact humidistat (connection to X3.8/X3.9) for
cooling, or if using none at all, insert a jumper, otherwise the heat pump
will not start (message "CA Protectn device primry").
―
F12 Flow temperature sensor, heating circuit with mixer M2/HC2 NTC 10 kΩ
F14 Flow temperature sensor, cooling circuit (heating circuit without mixer A1/HC1
or separate cooling circuit SKK)
NTC 10 kΩ
F16 Room temperature sensor, cooling circuit
■
Required for separate cooling circuit SKK
■
Recommended for heating/cooling circuit without mixer A1/HC1
NTC 10 kΩ
aVG
KM-BUS (wires interchangeable)
Use the KM-BUS distributor (accessories) if several devices are connected.
KM-BUS subscribers (examples):
■
Mixer extension kit for heating circuit M3/HC3
■
Remote control (set heating circuit allocation on the remote control)
■
EA1 extension, AM1 extension
—
sVA
Modbus (do not interchange the wires)
Connection for energy meter of photovoltaic system
—
J1 Jumper for Modbus terminator
Terminator active (delivered condition)
Terminator not active
—
X18 Modbus (do not interchange the wires)
■
Connected at the factory: Modbus connecting cable to the outdoor unit
or
■
Modbus distributor (accessories) if additional devices are to be connected,
e.g. Vitovent 300-F: See "Modbus distributor" installation instructions.
—
X24 Connection for LON communication module: See "LON communication mod-
ule" installation instructions
—
X31 Coding card slot —
a:D
A
Only in conjunction with installation kit with mixer (accessories):
PWM signal connection for heating circuit pump M2/HC2
—
Installation sequence
Electrical connection (cont.)
5831412
Installation
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