Lochinvar 150 - 500 2Maintenance Maintenance and annual startup, Service technician, General

Service Manual

2Maintenance

Maintenance and annual startup

Table 2A Service and Maintenance Schedules

Service technician

(see the following pages for instructions)

	General:
	• Address reported problems
	• Inspect interior; clean and vacuum if
	necessary;
	• Clean condensate trap and fill with fresh
	water
	• Check	for	leaks	(water, gas,	flue,
	condensate)
	• Verify flue and air lines in good condition
UP	and sealed tight
	• Check	system water pressure/system
START-
	piping/expansion tank
	• Check control settings
ANNUAL	• Check ignition and flame sense electrodes
	(sand	off	any	deposits;	clean
	and reposition)
	• Check wiring and connections
	• Perform		start-up	checkout	and
	performance verification per Section 10
	in the Armor Installation and Operation
	Manual.
	• Flame inspection (stable, uniform)
	• Flame signal (at least 10 microamps at
	high fire)
	• Clean	the	heat	exchanger if	flue
	temperature is more than 54°F above
	return water temperature.

If combustion or performance indicate need:

•Clean heat exchanger

•Remove and clean burner using compressed air only

•Clean the blower wheel

Owner maintenance

•Check water heater area

•Check pressure/temperature gauge

Daily

	• Check vent piping
Monthly	• Check air piping
	• Check air and vent termination
	screens
	• Check relief valve
	• Check condensate drain system
	• Check automatic air vents

Every
6 months	• Check water heater piping (gas
	and water) for leaks
	• Operate relief valve

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