48
Plug
Sensor/component
Type
F7
(X25.7/
X25.8)
Cylinder temperature sensor, bottom
NTC 10 kΩ
F8
(X25.9/
X25.10)
Flow temperature sensor, secondary circuit
Pt500A
(PTC)
F11
Contact humidistat 24 V–
Note
If a 230 V~ contact humidistat (connection to X3.8/X3.9)
is used for cooling, set a jumper, otherwise the heat
pump will not start (message "CA Protectn device prim-
ry").
—
F12
Flow temperature sensor heating circuit with mixer M2/
HC2
NTC 10 kΩ
F13
System flow temperature sensor (downstream of the
heating water buffer cylinder and external heat source)
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
F20
Boiler water temperature sensor, external heat source
NTC 10 kΩ
F26
Buffer temperature sensor, cooling
NTC 10 kΩ
aVG
KM BUS (wires interchangeable)
Use the KM BUS distributor (accessories) if several devi-
ces are connected.
KM BUS subscriber (examples):
■ Mixer extension kit for heating circuit M3/HC3
■ Remote control Vitotrol 200A or Vitotrol 300B: Set heat-
ing circuit assignment at the remote control.
■ EA1 extension, AM1 extension
■ Communication interface Vitocom 100, type GSM2
—
sVA
Modbus 2 (wires
not
interchangeable)
Connection for photovoltaic system electricity meter
—
a:D
B
PWM signal, secondary pump
—
a:D
C
PWM signal, cylinder loading pump
—
Installation sequence
Electrical connections, heat pump control unit
(cont.)
5516 436 GB