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14.3
LPG COMMISSIONING AND TESTING
The commissioning procedure on LPG is similar to that when the heater is firing on Natural Gas. As such, the
same procedure should be followed taking in to account the following information:
14.3.1
LPG PRESSURE ADJUSTMENT AND COMBUSTION CHECKS
The Lochinvar EcoShield series are supplied with a preset gas/air ratio inlet assembly. This must not be
tampered with. Any attempt to adjust the gas valve or venturi will invalidate the warranty.
Combustion figures should be as follows:
If the combustion figures are not within the range specified, contact Lochinvar Limited for further guidance.
15.0
MAINTENANCE
15.1
GENERAL
KEEP APPLIANCE AREA CLEAR AND FREE FROM COMBUSTIBLE MATERIALS AND FLAMMABLE
VAPOURS AND LIQUIDS.
A competent person should check and ensure that the flue, its support and terminal, the ventilation to the boiler
house, safety valve, drain, pressure gauge etc. are in a serviceable and working condition and still comply with the
relevant standards and codes of practice, as detailed in Section 4: GENERAL REQUIERMENTS.
Servicing is recommended at intervals no greater than 12 months to ensure trouble free operation. Even if the
maintenance schedule for the storage vessel is determined to be less than annually, it is important that all controls
and safety features are checked for correct operation on an annual basis.
Measuring flue gas CO
and flue gas temperatures will give an indication of the state of the flue and burner.
2
Results of the flue gas analysis should be compared with previously measured values to identify a possible loss of
efficiency.
15.2
MAINTENANCE SCHEDULE
The water heater has a built in function that reminds the user that routine maintenance is due. As a default, this is
set to 12 months, 10,000 operational hours or 10,000 ignition cycles. Lochinvar Limited recommend that this is
the maximum service interval however in hard water areas, it may be necessary to reduce this time period to
ensure correct operation of the heater and associated equipment.
15.3
BURNER INSPECTION
The heat exchanger has a sight glass for inspection of the flame picture.
NOTE: If the appliance has been in recent operation, this area may be hot. Appropriate precautions
should be taken to prevent personal injury.
To check the flame picture at high and low fire, the following procedure should be followed:
1.
Place the water heater into service mode. This is done by depressing the small button below the
Enter/Reset button for 5 seconds.
Model No.
CO
2
10.5% 0.5%
SHW45-325CE
10.5% 0.5%
SHW60-325CE
10.5% 0.5%
SHW85-435CE
10.5% 0.5%
SHW115-435CE
10.5% 0.5%
SHW145-435CE
TABLE 14.3 LPG COMBUSTION FIGURES
CO
<100 ppm
<100 ppm
<100 ppm
<100 ppm
<100 ppm
37
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