Potterton Promax Store 24 Installation And Service Manual page 32

Verify Flue Integrity
Indication that products of
combustion &inlet air are
mixing - further
investigation is required.
Check all flue components
are correctly assembled,
fixed & supported. Check
the flue & terminal are
unobstructed.
Is O 20.6% and
2
CO < 0.2% ?
2
No
TURNAPPLIANCEOFF!
Call 0344 871 1525 for
advice.
The appliance MUSTNOT
be commissioned until all
problems are identified
and resolved.
32
Set Boiler to Maximum Rate
Allow the combustion to
stabilise. Do not insert probe to
avoid "flooding% the analyser.
Perform Flue Integrity
Combustion Check
Insert the analyser probe into
the air inlet test point, allowing
the reading to stabilise.
No
Is O 20.6% and
2
CO < 0.2% ?
2
Yes
Verify Integrity of Seals
Check all burner seals,
internal flue seals, door &
case seals. Replace any
seals that appear unsound.
Is CO < 350ppm
and CO/CO ratio
2
< 0.004 ?
No
TURNAPPLIANCEOFF!
Call 0344 871 1525 for advice.
The appliance MUSTNOTbe
commissioned until all
problems are identified and
resolved.
If commissioning cannot be
fully completed the appliance
must be disconnected from the
gas supply in accordance with
the GSIUR.
Note: Check & record the CO
&combustion ratio at both
maximum &minimum rates
before calling 0344 871 1525.
Checking Combustion
1. Follow the flow chart opposite.
Check CO & Combustion
Ratio at Maximum Rate
Whilst the boiler is still
Yes
operating at maximum insert
the analyser probe into the
flue gas test point, allowing
the reading to stabilise.
Is CO < 350ppm
No
and CO/CO
2
< 0.004 ?
Set Boiler to Minimum Rate
Allow the combustion to
Yes
ratio
stabilise. Do not insert probe
to avoid "flooding% the analyser.
Check CO & Combustion
Ratio at Minimum Rate
Whilst the boiler is
operating at minimum insert
the analyser probe into the
flue gas test point, allowing
the reading to stabilise.
Is CO < 350ppm
No
and CO/CO
< 0.004 ?
Yes
BOILEROPERATING
SATISFACTORILY. NO
FURTHERACTION
REQUIRED
Ensure test points are capped,
the boiler case front panel is
correctly fitted & secured and
all other commissioning
procedures completed.
Complete the "Benchmark%
Checklist, recording the CO &
combustion ratio readings as
required.
© Baxi Heating UK Ltd 2015
ratio
2