Warning It is a requirement that only qualified personnel are allowed to carry out installation
commissioning or servicing. Before commencing any maintenance or servicing work the heater must be
shut down and allowed to cool, and have the gas and electric supplies to it turned off.
Description Maintenance operation
Heater Ensure all switches and controls are functioning correctly.
Heat exchanger and Flue Venter
Remove burner assembly flue venter and heat exchanger manifold
plate. Clean with compressed air re assemble and test all joints for
soundness use an approved leak detection spray on all gas lines
Main Fan Clean with compressed air
Flue pipes Inspect and clean if required
Heater casing and grilles Inspect and clean with damp cloth
Nozzle manifold Remove burner assembly inspect and clean
Injectors Inspect injectors clean or replace as required
Ionisation probe and electrodes Inspect and clean replace as required
Gas filter Remove and clean with compressed air replace as required .
10-MAINTENANCE
11- RECOMMENDATIONS END USER
FAULT SOLUTION
Smell of gas
VENTILATE AREA isolate gas supply Do not operate electrical
devices until area has been properly ventilated
Burner at lockout
(warning light on )
Investigate the cause, Low gas pressure, Faulty ignition Faulty
probe Faulty solenoid
Reset the switch
Precautions
- Ensure flue pipes are free from obstruction.
- Unauthorised modifications to the appliance, or departure from the manufacturers guidance on
intended use, or, installation contrary to the manufacturers recommendations may constitute a
hazard.
- Changing the gas type on the heater will require a nozzle change and the burner re tested by a
suitably qualified engineer
Fault Diagnosis
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