Lochinvar 50-210 service manual Maintenance Maintenance and annual startup, Service technician

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 and sealed tight

UP	•Check	system water		pressure/system
START-	piping/expansion tank
	• Check control settings
	• Check ignition and flame sense
ANNUAL	electrodes (sand off any deposits; clean
	and reposition)
	• Check wiring and connections
	• Perform		start-up	checkout	and
	performance verification per Section 10
	in the Knight Wall Mount 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

(see the Knight Wall Mount User’s Information

Manual for instructions)

• Check boiler area

Daily	• Check pressure/temperature
	gauge
	• Check vent piping
	• Check air piping
	• Check air and vent termination
	screens

Monthly

•Check relief valve

•Check condensate drain system

•Check automatic air vents

	•Test low water cutoff (if used)
Periodically
	• Reset button (low water cutoff)
	• Check boiler piping (gas and
Every	water) for leaks
6 months
	• Operate relief valve
End	•Shut boiler down (unless boiler
of season
	used for domestic hot water)
months

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