Lochinvar 151 Maintenance Maintenance and annual startup, Service technician, Owner maintenance

Installation & Operation Manual

12 Maintenance Maintenance and annual startup

Table 12A 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)
UP	• Verify flue and air lines in good condition
	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
	of this 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.
	• Check Delta T (Temperature Rise)

If combustion or performance indicate need:

•Clean heat exchanger

•Remove and clean burner using compressed air only

•Clean the blower wheel

Owner maintenance

Daily	• Check water heater area
	• Check pressure/temperature
	gauge

	• Check vent piping
	• Check air piping
	• Check air and vent termination
Monthly	screens
	• Check relief valve
	• Check condensate drain system
	• Check automatic air vents
	• Check Delta T (Temperature
	Rise)

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

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