Wolf COB - Cascade Operation - Flue Gas Damper Tightness Test

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29 Cascadeoperation-Fluegas
dampertightnesstest
Tightnessteston
connectionstoadjacent
appliances
Aspartoftheannualheatingapplianceinspection,thecascade
damperonoverpressureboilersystemsmustbetestedfortightness,
toensurenouegascanescapeintotheboilerroom.Fluegascan
leadtoasphyxiationorseveretolife-threateningpoisoning.
The check must be carried out with the appliance closed.
Tightnesstestonconnectionstoadjacentappliances
- Set the program selector (l.h. rotary selector) to "Standby" on the BM
programming unit.
- 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.
- Check the CO
2
content in the air connectors on all other appliances:
- 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
position è COB shuts down.
- The turn the second COB 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.
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1. ON OFF OFF OFF
2. OFF ON OFF OFF