Can & Ems Bus - Bosch Compress 3400i AWS Installation Manual

The power supply cable of the Installer Module of the indoor unit has an
integrated fuse. In case of damage, the power supply cable [6] must be
replaced (see spare part list manual).
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.
11.4.2 CAN & EMS BUS
Fig. 36 CAN and EMS connections
Continuous line = connection made at the factory
Dashed line = connection made during installation:
[A] Indoor unit
[B] Outdoor unit
[1] Control unit (user interface)
[2] Coding switch setting for A and P encoders (A=0, P=1)
[3] Installer module
[4] Room controller (accessories)
[5] EMS module (accessory)
[6] Connect-Key K 30 RF (accessory)
Compress 3400i AWS – 6721852066 (2023/01)
A
2
1
4
6
5
B
7
Note regarding [1]:
Coding switches A and P must not be adjusted! Otherwise malfunctions
and faults will occur.
Important: check the coding when a replacement part is used.
Note regarding [4]: to avoid reflection of messages in the CAN-BUS, the
CAN terminator switch should be switched on.
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_ __ ___ ___ __
3
8
0010036950-001
[7] Outdoor unit
[8] Outdoor unit terminals
Technical information
Connected at factory/connected
during installation
Accessories
35