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PART 8. MAINTENANCE
B. ANNUAL INSPECTION (See LIT91179 Maintenance Checklist for required tools and materials)
An inspection should cover, at a minimum, the following areas:
• Inspect all fittings, controls and connections for leaks, damage, or fouling
• Fire side:
Heat exchanger
Burner and ignitor
Burner door and rear wall insulation
• Drain system components:
Hoses & clamps
Trap assembly
Condensate neutralizer
• Test all safeties and operating controls
• Water side temperature rise (∆T) test
INSPECTION AND CLEANING (photos illustrating each step follow sets of instructions)
CAUTION: Before removing the door of the appliance, switch o the electrical power supply to it.
• Remove the front cover and check the sensors, transducers, all pipes, lines and connections, and the heat
exchanger (top, bottom) for traces of water and water leakage.
• Inspect the top of the casing and/or the top of the appliance for water leakage or traces of water from the air
supply pipe or the air vent (if applicable).
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