28
13.2
PROPANE INJECTORS
When converting to propane, the pilot and main burner injectors should be checked to ensure that they are
correctly sized. For further information, please refer to Table 13.1.
Injector
Size
Marking
Pilot Burner
n/a
2304
Main Burner
2.0mm
2402
TABLE 13.1
LPG INJECTOR SIZES
13.3
CONVERSION TO LPG
This process must be carried out in the order stated. Failure to follow the following procedure may lead to
non-warrantable damage to the water heater. The conversion MUST be carried out be a competent person
certified for work on LPG fuel.
1.
Turn power and gas off.
2.
Remove middle and lower door panels.
3.
Remove pilot assembly and fit LPG pilot orifice (ORF2614).
4.
Remove the Natural Gas burner injectors and fit LPG injectors (ORF2402).
5.
Re-fit middle and lower door panels.
6.
Attach the LPG warning label and rating plate overlay.
13.4
LPG COMMISSIONING AND TESTING
The commissioning procedure on LPG is similar to that when the heater is firing on Natural Gas. Please refer to
Section 12.0 COMMISSIONING AND TESTING.
14.0
MAINTENANCE
14.1
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 system, ventilation to the plant room, 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, preferably by a Lochinvar appointed person, to
ensure trouble free operation. Even if a tank 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 establish possible loss of
efficiency.
Summary of Contents for Mini Copper-Fin MCB136CE
Page 36: ...36 ...
