Flue Gas/Ventilation Air Damper Electrical Connection - Wolf CGS-2-14/120L Installation Instructions Manual

Flue gas/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 power cable of
the damper motor and signal contact.
- Pull the Rast5 plug from output A1.
- Push the power cable of the flue gas/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 from input E1.
- Push the limit switch cable of the flue gas/ventilation air
damper motor through the strain relief (insert) and secure.
- Terminate the cores at the Rast5 plug E1 and insert the plug.
HCM-2 electrical connection
LP
L1 N
Damper function test
•
Start the appliance
•
Inspect visually to ensure damper is open
•
Unplug E1 for 2 minutes during operation.
Boiler must shut down and lock out 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
3064816_201804
16. Flue gas/ventilation air damper
electrical connection
A1 (programmable output)
E1 (programmable input, e.g. flue gas damper)
A1
E1 E2 AF
a b
L1 a b 1 2
1 2 1 2
1 2
Flue gas/ventilation air
damper motor
Note:
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 heating, as well
as for emissions tests and frost protection.
SF
eBUS
-
+
1 2
1 2 1 2
M
230V~
Limit switch
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.
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