Flue Gas Damper Tightness Test - Wolf COB Installation Instructions And Technical Manual

Testing adjacent
appliances for
tightness
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26. Cascade operation

Flue gas damper tightness test

As part of the annual boiler test, the cascade damper in overpressure boiler systems
must be tested for tightness to ensure no CO
poisoning or suffocation.
The check must be carried out with the appliance closed.
We recommend proceeding as follows:
Testing adjacent appliances for tightness
- Set the program selector (l.h. rotary selector) to "Standby" on the BM program-
ming module.
- Then turn the first COB to position 1 "Emissions test" by means of the heating
water temperature selector è COB starts.
- Operate the first COB for at least 5 minutes.
- On all other appliances, check the CO2 contents at the air connector:
- If the CO value exceeds 0.2% within 15 minutes, the leak must be found and
2
remedied.
- Subsequently close all test apertures again. When doing so, ensure the caps are
seated firmly.
Testing the first COB for tightness
- Turn the temperature selector for heating water on the first COB to its centre posi-
tion è COB shuts down.
- Turn the second COP to position 1 "Emissions test" by means of the heating water
temperature selector è COB starts.
- Operate the second COB for at least 5 minutes.
- Carry out the CO test on the first COB.
2
- If the CO value exceeds 0.2% within 15 minutes, the leak must be found and
2
remedied.
- Subsequently close all test apertures again. When doing so, ensure the caps are
seated firmly.
1 2
1. ON OFF
2. OFF ON
can escape into the boiler room; risk of
2
3 4
OFF OFF
OFF OFF
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