Benchmark ZWB 7-29 CC1 Installation And Servicing page 93

Ignition too harsh, ignition poor
Check
6. Does the gas supply type match the
specifications on the appliance iden-
tification plate?
B Test gas supply pressure - OK?
7.
8. Problem with flue?
B Check CO
level in combustion
2
air.
Is CO level above 0,2 % ?
2
9. Flue gas CO levels measured at
2
min. and max. load do not match
specified levels.
B Measure CO
10. Burner not correctly fitted or defec-
tive?
B Remove burner.
Cover fixings not tight or seal
defective or not correctly fitted or
burner defective!
7 181 465 346 GB (03.02)
yes:
no:
yes:
no:
yes:
no:
yes:
no:
levels.
2
Failure identification procedure
Action
↓7.
B Carry out gas type conversion as described in
installation instructions.
↓8.
B Decommission appliance.
B Notify gas company.
B Check flue and repair or replace if necessary.
↓9.
↓9.
B Adjust CO
level as per installation instructions.
2
↓10.
B Replace burner and seal if necessary.
B Ensure seal is fitted in correct position.
To return to normal function mode:
B Press buttons
and
B Regulate the temperature control
temperature control
positions.
simultaneously.
and the
on the previously set
45