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17.0 COMMISSIONING AND TESTING
17.1
ELECTRICAL INSTALLATION
Notes on the requirements for electrical installation are provided in Section 15.0. A schematic drawing of the control
circuit is shown in Section 15.0: WIRING DIAGRAM.
17.2
GAS INSTALLATION
For design see 9.0: GAS SUPPLY. See Section3.0: for details on the position of the gas connection.
17.3
WATER CONNECTIONS
For design see Section 13.0: WATER CONNECTIONS
The system should be thoroughly flushed out with cold water without any circulating pumps in
position. Ensure all the valves are open.
Check the system for leaks and repair as necessary. If the system is configured in a sealed arrangement, check the
expansion vessel cushion pressure and pressurisation unit settings.
17.4
COMMISSIONING THE EQUIPMENT
17.4.1
GENERAL CHECKS PRIOR TO LIGHTING
A person deemed competent must be responsible for the commissioning of this equipment.
Before attempting to commission any equipment, ensure that personnel involved are aware of
what action is about to be taken and begin by making the following checks:
1.
Flueway passages are clear.
2.
Adequate ventilation exists in the plant room (if necessary).
3.
The system is fully charged with water, ready to receive heat. All necessary valves are open and all allied
pumps are circulating water.
4.
The gas supply pipework is clear of any loose matter, tested for soundness and purged.
5.
The condensate drain is installed correctly and the condensate trap is filled with water.
If the condensate trap is not filled before use, products of combustion may escape and can
lead to severe personal injury or death
17.4.2
EQUIPMENT CHECKS PRIOR TO LIGHTING
This unit has been designed for a nominal gas inlet pressure of 20.0 mbar when used on natural gas.
Information relating to propane firing can be found in Section 18.0: LPG FUEL
1.
Gas supply is connected but turned to the "off" position. Any unions or fittings are correctly tightened, test
points are closed and the flame sense electrode lead is connected correctly. Ensure the ceramic sheath
around the flame sense electrode is not cracked or broken.
2.
Ensure electricity supply is connected.
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