Wiring Diagram; Installer Module Of Indoor Unit With Integrated Electric Booster Heater - Bosch Compress 3400i AWS Installation Manual

Technical information
11.4

Wiring diagram

11.4.1 Installer module of indoor unit with integrated electric booster heater

DANGER
Risk of electric shock!
Opening the installer module may cause injury by electric shock.
▶ Never open the installer module.
T0
T1
TW1
TC0
TC1
TC3
I1
I4
TR3
EMS bus
HMI bus
Service Tools
BB tool
2
3
CAN-BUS
4
Fig. 35 Installer module of the indoor unit
[1] A and P encoders
[2] Connectivity gateway (accessory)
[3] CAN-BUS to outdoor unit
[4] CAN termination switch
[5] Alarm electric heater (230V~ input voltage)
[6] Power supply, 230V~ from terminal blocks
[7] Fuse 5x20, 6.3A time lag
[T0] Heating circuit flow temperature sensor
[T1] Outside temperature sensor
[TW1] DHW temperature sensor
[TC0] Return temperature sensor
[TC1] Flow temperature sensor (electric booster heater)
[TC3] Condenser temperature sensor
[I1] External input 1
[I4] External input 4
[TR3] Refrigerant liquid temperature
[MK2]Condensation sensor(s)
34
1
Off
On
M
PC0
MD1 Buzzer
PWM
7
JR1
[Buzzer] Alarm buzzer (accessory)
[PC0 PWM]PWM signal, primary circulation pump
[JR1] Refrigerant gas pressure sensor
[FE] Electric booster heater overheating alarm
[K2] Electric booster heater contactor EE2
[K1] Electric booster heater contactor EE1
[K3] Electric booster heater contactor EE3
[PW2]DHW circulation pump
[EA1] Connection to heating cable terminal blocks (outdoor unit
accessory)
[PK2] Relay output, cooling mode, 230V~
[VW1]DHW 3-way valve
[PC1] Heating circulation pump
[PC0] Primary circulation pump
Compress 3400i AWS – 6721852066 (2023/01)
6
PC0
PC1
VW1
PK2
EA1
PW2
K3
K1
K2
5
FE
0010035898-003