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 k
Ω
F4
Buffer temperature sensor
NTC 10 k
Ω
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 k
Ω
F14
Flow temperature sensor, cooling circuit (heating circuit without mixer A1/HC1
or separate cooling circuit SKK)
NTC 10 k
Ω
F16
Room temperature sensor, cooling circuit
■
Required for separate cooling circuit SKK
■
Recommended for heating/cooling circuit without mixer A1/HC1
NTC 10 k
Ω
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
