29
10.0 Commissioning
© Baxi Heating UK Ltd 2012
Fig. 40
Fig. 41
Inlet Gas Pressure
Test Point
DO NOT check gas pressure here
10.2 Check the Operational (Working) Gas Inlet
Pressure & Gas Rate
Note: The system MUST be cold to ensure the boiler is
operating under full demand. To obtain an accurate
measurement on smaller capacity systems it may be necessary
to open one or more hot taps in order to maintain the boiler
at full rate
1. Press & together and hold for at least 6 seconds.
‘On’will be displayed briefly, followed by ‘304’then ‘100’
when the boiler is lit, indicating the CH output is at MAXIMUM
(‘Chimney Sweep Function’).
2. With the boiler operating in the maximum rate condition
check that the operational (working) gas pressure at the inlet gas
pressure test point is in accordance with B.S. 6798 & B.S. 6891.
This must be AT LEAST 17mb ! (LPG - 37mb)
3. Ensure that this inlet pressure can be obtained with all other
gas appliances in the property working.
Measure the Gas Rate
4. With any other appliances & pilot lights turned OFF the gas
rate can be measured. It should be:-
Natural Gas 24 model 2.54 m
3
/h
28 model 2.96 m
3
/h
33 model 3.49 m
3
/h
Propane 24 model 1.92 kg/h
28 model 2.25 kg/h
33 model 2.64 kg/h
5. Press & together and hold for at least 6 seconds
to exit the function.
6. Carefully read and complete all sections of the Benchmark
Commissioning Checklist at the rear of this publication that are
relevant to the boiler and installation. These details will be
required in the event of any warranty work. The publication
must be handed to the user for safe keeping and each
subsequent regular service visit recorded.
7. For IE, it is necessary to complete a “Declaration of
Conformity” to indicate compliance with I.S. 813. An example of
this is given in I.S. 813 “Domestic Gas Installations”. This is in
addition to the Benchmark Commissioning Checklist.
1. It may be necessary to adjust the boiler gas type if the supply is changed, for example
when Natural Gas is provided to a rural area previously reliant on Propane. In these
instances a replacement Gas Type Label may be required, which is available on request
as a spare part.
2. Press & and hold for at least 6 seconds. will be displayed,
alternating with .
3. Press to select the next parameter . Press .
4. Press or to select the value that corresponds with the required
gas type. For Natural Gas:-
For Propane:-
5. Press to save the change, then to return to the normal display.
R
Changing the Gas Type
N.G. Factory
Set
When reset for
L.P.G.
Gas Type Label
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