4
Set-up and installation
Installation and operating instructions
32
Gas Combi Unit
Floor-standing gas condensing boiler with integrated heat storage
008.1543899_02 – 04/2019 – EN
Fig. 4-32
Connection diagram of the PCB jumpers and cable col-
ours of the factory-installed connection cables (for le-
gend, see
Connections of the PCB connectors:
J2
3UVB1
J3
AUX connection
J6
Mains connection
J8
Sensors, switching contacts
J9
FlowSensor (FLS1)
J12
3UV DHW
J13
CAN system bus
J14
Circulation pump P
Z
J16
Room thermostat
Cable colours:
bl
Blue
br
Brown
ye
Yellow
gn
Green
n.b.
Contact not assigned
Mains voltage 230 V, 50 Hz
Tab. 4-3
INFORMATION
A detailed description of the individual connections can be
found in the
.
Fig. 4-33
Laying and securing cabling on the storage tank
14
Secure cables leading outdoors to the storage tank (
).
15
Install the cable cover on the back of the controller housing
again.
Summary of Contents for GCU compact Series
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