Baxi Platinum Combi 24 HE A Installation & Servicing Instructions Manual page 35

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
TURN APPLIANCE OFF !
Call 0844 871 1555 for
advice.
The appliance MUST NOT be
commissioned until all
problems are identified and
resolved.
© Baxi Heating UK Ltd 2014
Set Boiler to Maximum Rate
(see 11.1.13)
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
TURN APPLIANCE OFF !
Call 0844 871 1555 for advice.
The appliance MUST NOT be
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 0844 871 1555.
11.0 Commissioning
11.2
1. This procedure is mandatory in GB from April 2014. It is
strongly recommended to perform the procedure before that
date.
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 ratio
2
< 0.004 ?
No
Checking Combustion
Set Boiler to Minimum Rate
(see 11.1.19)
Yes
Allow the combustion to
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 and
CO/CO ratio <
2
0.004 ?
Yes
BOILER OPERATING
SATISFACTORILY. NO
FURTHER ACTION
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.
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