Wolf CGB-2 Series, Installation Instructions For Contractors

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32 3064810_201804
16 Flue gas damper/ventilation air
damper electrical connection
HCM-2 electrical connection
Limit switch Flue gas damper motor/venti-
lation air damper motor
Please note:
The limit switch for the flue gas
damper/ventilation air damper
must be potential-free.
Otherwise the HCM-2 control unit
PCB will be destroyed.
Damper function test
•
Start the appliance
•
Inspect visually to ensure damper is open
•
Unplug E1 for 2 minutes during operation.
Boiler must lockout with fault code 8, with the fan continuing to run at low speed.
•
Reconnect E1
•
Acknowledge fault message
•
Inspect visually to ensure flue gas damper is closed
Note:
The contractor parameter
HG13 (input 1) must be set to
Fl. gas damper
and
HG14 (output 1) must be set to
Fl. gas damper .
When the limit switch is open, the burner
is blocked both for DHW and central heat-
ing as well as for emissions test and frost
protection.
gn/ge
M
230V~
br bl
A1
N
L1 L1
LP
N
SF
1 2
AF E1 eBUS
+
-
1 2 a b
E2
a b
1 2 1 2
1 2
1 2
1 2
E1 (programmable input, e.g. flue gas damper)
A1 (programmable output)
Flue gas damper/ventilation air damper electrical
connection
- Isolate the system from the power supply before opening.
- Check that the appliance is isolated from the power supply.
- Swivel the front panel to one side.
- Remove the front casing.
- Open the lower casing cover of the HCM-2.
- Remove the insert from the HCM-2 casing.
- Strip approx. 70 mm of insulation from the connecting cable
of the damper motor and signal contact.
- Pull the Rast5 plug out from output A1.
- Push the connecting cable of the flue gas damper/ventilation
air damper motor through the strain relief (insert) and secure.
- Terminate the cores at the Rast5 plug A1 and insert the plug.
- Pull the Rast5 plug out from input E1.
- Push the limit switch lead of the flue gas damper/ventilation
air damper motor through the strain relief (insert) and secure.
- Terminate the cores at the Rast5 plug E1 and insert the plug.