39
13.0
COMMISSIONING AND TESTING
13.1
ELECTRICAL INSTALLATION
Notes on the requirements for electrical installation are provided in
Section 11:
ELECTRICAL SUPPLY
. A
schematic drawing of the control circuit is shown in
Figures 11.1
&
11.2
.
13.2
GAS INSTALLATION
For design see
Section 7: GAS SUPPLY.
See
Figures 2.4
,
2.5
&
2.6
for details on the position of the gas
connection.
13.3
WATER CONNECTIONS
For design see
Section 10: WATER CONNECTIONS
The system should be thoroughly flushed out with cold water without any circulating pump in position.
Ensure all the valves are open.
If a return pump is to be fitted, it should be fitted before the system is filled and air locks cleared. Check the
system for leaks and repair as necessary. If the system is configured in an unvented arrangement, check the
expansion vessel cushion pressure.
13.4
COMMISSIONING THE EQUIPMENT
13.4.1
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 and the termination complies with
Table 8.1
.
2.
Ensure that the flue run is within the maximum length specified within
Table 3.1
.
3.
Adequate ventilation exists in the plant room (if necessary).
4.
The system is fully charged with water, ready to receive heat. All necessary valves are open and the
building return pump (if fitted) is circulating water.
5.
The gas supply pipework is clear of any loose matter, tested for soundness and purged.
13.4.2
EQUIPMENT CHECKS PRIOR TO LIGHTING
This unit has been designed for a nominal gas inlet pressure of 20 mbar when used on natural gas.
Information relating to propane firing can be found in Section 13: 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 and that the thermostat bulbs are fully located into their pocket.
Reset the overheat limit switch by firmly pressing the pin.
Summary of Contents for LBF121
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