Wolf COB - Flue Gas Damper Tightness Test

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26. Cascade operation
Flue gas damper tightness test
Testingadjacent
appliances for
tightness
1 2 3 4
1. ON OFF OFF OFF
2. OFF ON OFF OFF
As part of the annual boiler test, the cascade damper in overpressure boiler systems
must be tested for tightness to ensure no CO
2
can escape into the boiler room; risk of
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 rst COB to position 1 “Emissions test” by means of the heating
water temperature selector è COB starts.
- Operate the rst COB for at least 5 minutes.
- On all other appliances, check the CO2 contents at the air connector:
- If the CO
2
value exceeds 0.2% within 15 minutes, the leak must be found and
remedied.
- Subsequently close all test apertures again. When doing so, ensure the caps are
seated rmly.
TestingtherstCOBfortightness
- Turn the temperature selector for heating water on the rst 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
2
test on the rst COB.
- If the CO
2
value exceeds 0.2% within 15 minutes, the leak must be found and
remedied.
- Subsequently close all test apertures again. When doing so, ensure the caps are
seated rmly.