44
14.3
LPG COMMISSIONING AND TESTING
The commissioning procedure on LPG is similar to that when the boiler 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 EcoKnight™
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:
Model No.
CO
2
CO
EKB45CE
10.5%
0.5%
<100 ppm
EKB60CE
10.5%
0.5%
<100 ppm
EKB85CE
10.5%
0.5%
<100 ppm
EKB115CE
10.5%
0.5%
<100 ppm
EKB145CE
10.5%
0.5%
<100 ppm
EKB175CE
10.0%
1.0%
<100 ppm
EKB205CE
10.0%
1.0%
<100 ppm
EKB235CE
10.0%
1.0%
<100 ppm
TABLE 14.2 LPG COMBUSTION FIGURES
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 REQUIREMENTS
.
Servicing is recommended at intervals no greater than 12 months to aid trouble free operation. Even if a
maintenance schedule 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
2
and flue gas temperatures will give an indication of the state of the flue and burner. Results
of the flue gas analysis should be compared with previously measured values to identify any changes in operational
characteristics.
15.2
MAINTENANCE SCHEDULE
The boiler 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 recommends that this be the maximum
service interval.
