Connections To Installer Module Of The Indoor Unit - Bosch Compress 3400i AWS Installation Manual

Signal circuit cables and power circuit cables cannot be in the same
cable feed.
5.7.2

Connections to installer module of the indoor unit

DANGER
Risk of electric shock!
Opening the installer module may cause injury by electric shock.
▶ Never open the installer module.
T0
T1
TW1
I1
I4
EMS bus
1
CAN-BUS
2
3
Fig. 11 Installer module of the indoor unit
[1] Connectivity gateway (accessory)
[2] CAN-BUS to outdoor unit
[3] CAN termination switch
[T0] Heating circuit flow temperature sensor
[T1] Outside temperature sensor
[TW1] DHW temperature sensor
[I1] External input 1
[I4] External input 4
[MK2]Condensation sensor(s)
[Buzzer] Alarm buzzer (accessory)
[PW2] DHW circulation pump
[PK2] Relay output, cooling mode, 230V~
[VW1]DHW 3-way valve
[PC1] Heating circulation pump
Compress 3400i AWS – 6721852066 (2023/01)
Off
On
MD1 Buzzer
Max load for relay outputs PW2, PK2, VW1, PC1: 2A, cos φ > 0.4.
Maximum load for CUHP inst.: 6.3A
Note regarding input I1 (connection 13, 14) and I4 (connection 15,16).
The contact on the component or relay that is connected to this input
must be suitable for 5V and 1mA.
Installation
PC1
VW1
PK2
PW2
0010036334-004
15