2-32. WATER HEATER ASSEMBLY (CONT)
Remove drain plug (2) and drain water,
sediment, and contaminated fuel. Discard contaminated
Install drain plug (2).
Test operate water heater.
Observe temperature gage (3). Water
heater burner should shut down automatically when
temperature gage reads temperature set on operating
temperature control (6) 10F.
Water temperature will continue to
rise after burner shutdown due to
heat transferred to water from burner
Observe fuel pressure gage (4) for normal indication of 75 to 80 psi (517 to 552 kPa).
Shut down water heater after test.
Exhaust duct is hot and can cause injury to personnel if hand protection is not worn when
handling. Wear protective gloves for maximum protection. Wear protective gloves when handling
Change 1 2-111