69
Information regarding the electrical connections
■
The total output of all components connected directly
to the heat pump control unit (e.g. pumps, valves,
signalling equipment, contactors) must not exceed
1000 W.
If the total output
≤
1000 W, the individual rating of a
component (e.g. pump, valve, signalling equipment,
contactor) can be greater than specified. However,
the breaking capacity of the corresponding relay
must not be exceeded: See following chapter.
■
The terminals may have been pre-allocated at the
factory.
If 2 components are connected to the same terminal,
press both cores together in a
single
wire ferrule.
■
The KM-BUS wires are interchangeable.
■
The Modbus wires are
not
interchangeable.
■
The neutral and earth conductors of all components
are connected to terminals X2.N and X1.
?
on the
cross connect PCB:
Main and expansion PCB
Main PCB
230 V~ components
1 2
1 2 3 4 5
sYH
sYG
sYF
sYÖ
sYA
sYS
sYD
fÖ
F3
6.3 A (slow)
1 2 3 4 1 2 3 4 5 6 7 1 2 3 4 5
1 2 3 4
1 2 3
1 2
1 2 3
Fig. 32
F3
Fuse 6.3 A (slow)
fÖ
Internal power supply, control unit (factory connec-
tion)
sYÖ
Compressor switching enable (factory con-
nection)
sYA
/
sYS
230 V~ components: Never connect anything
here.
sYD
-
sYH
Factory connections
Maintenance
Electrical connections on the heat pump control…
(cont.)
5800 917 GB
Maintenance
