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Installation
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Compress 3400i AWS – 6721852066 (2023/01)
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.
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
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.
Off
On
2
3
1
M
PC1
M
PW2
PK2
MD1
T1
I1
T0
EMS bus
I4
Buzzer
0010036334-004
CAN-BUS
M
VW1
TW1
15


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