COMMISSIONING INSTRUCTIONS
TR05A153.B1107
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5 COMMISSIONING
5.1 General warnings
The following operations must be carried out by professionally qualified personnel, registered in
accordance with current legislation. Reference should be made to BS 5449:5 - Commissioning.
The boiler leaves the factory pre-set and tested for burning Natural Gas (Methane). Nevertheless, when
starting the boiler for the first time, make sure that the information on the rating plate corresponds to
the type of gas being supplied to the boiler.
Once the system has been filled and the necessary adjustments made, remember to tighten the screws
of the gas valve test point and make sure that there are no gas leaks from the test point and from any
pipe fittings upstream of the gas valve.
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Preliminary operations
Switching the boiler on for the first time means checking that the installation, regulation and operation of the
appliance are correct. The commissioning engineer MUST check, referring to the previous sections of this manual,
the following:-
•
That the data on the data plate corresponds to that of the mains supply networks (gas, electricity, water);
•
That the power supply voltage to the boiler complies with the data plate (230 V – 50 Hz) and that the live, neutral
and earth wires are correctly connected. Also, that the earth connection is sound and that the appliance is
effectively earthed;
•
That the gas supply is correctly sized for the flow rate required by the boiler and that it is fitted with all the safety
and control devices as lay down by current regulations;
•
That all mechanical connections are sound and have not become loose during transportation and handling;
•
That the seals on the gas supply pipe from the mains are sound, and that the meter does not register any flow of
gas;
•
That the flue system (air intake and exhaust ducts) is installed correctly and in line with current law and national
and local standards;
•
The all permanent combustion air and ventilation openings as required by current law for the type of appliances
installed are provided and are not blocked;
•
That the condensate drainage system(s) are installed correctly and in line with current law and national and local
standards;
•
That the condensate drainage system, including outside the boiler (condensate collection devices), allows the
condensate to flow freely to the drain. Check that no exhaust fumes could discharge into the drainage system;
•
That there are no flammable materials or liquids in the immediate vicinity of the boiler.
The commissioning engineer must then:-
•
Flush out both the central heating and domestic hot water circuits
(see Section 5.3);
•
Turn the gas supply on and purge according to BS6891.
•
Test for gas soundness (let-by and tightness tests).
