52
Terminals
Function
Explanation
X3.17
X3.18
Fuse F1 6.3 A (slow)
X3.18
Heat pump control unit
power supply:
Phase L1
X1.1 Earth conductor con-
nection
X2.1 Neutral conductor
connection
Power supply 230 V~
Controller and sensor PCB
Set the required parameters during com-
missioning; see from page 74.
Note
Flow temperature sensor for heating
circuit with mixer (M3): The flow tem-
perature sensor for one heating circuit
with mixer (M3/HC3) is connected to the
mixer extension kit (accessory).
Plug
Sensor
Type
F0.1/F0.2
Outside temperature sensor
NTC 10 kΩ
F0.2/F0.3
Radio clock receiver (accessories)
DCF
F4
Buffer temperature sensor
NTC 10 kΩ
F6
Cylinder temperature sensor, top
NTC 10 kΩ
F7
Cylinder temperature sensor, bottom
NTC 10 kΩ
F11
Contact humidistat 24 V–
Note
If the contact humidistat of the NC/AC-Box is used when
cooling, set 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
F13
System flow temperature sensor, with sensor well, down-
stream of heating water buffer cylinder
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 for separate cooling circuit
NTC 10 kΩ
F20
Boiler water temperature sensor, external heat genera-
tor
NTC 10 kΩ
Installation sequence
Electrical connection
(cont.)
5546 273 GB
Содержание BW 351.A07
Страница 28: ...28 Removing the top panel 1 Installation sequence Siting the heat pump cont 5546 273 GB ...
Страница 88: ...88 Opening the casing door Troubleshooting Repairs cont 5546 273 GB ...
Страница 90: ...90 D C Q R S V K X P F J U T X Q S T R D Y W Type BWC 351 A07 Troubleshooting Repairs cont 5546 273 GB ...