Maintenance Schedule - Lochinvar Knight XL 400 User's Information Manual

2

Maintenance schedule

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 passage ways in good
condition and sealed tight
• Check system water pressure/system
piping/expansion tank
• Check control settings
• Check ignition
electrodes (sand off any deposits; clean
and reposition)
• Check wiring and connections
• Perform
performance verification per Section 10.
• 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 (30°C)
above return water temperature.
If combustion
indicate need:
• Clean heat exchanger
• Remove
compressed air only
• Clean the blower wheel
Follow the maintenance procedures given throughout this manual. Failure to perform the service and
WARNING
maintenance or follow the directions in this manual could result in damage to the boiler or system,
resulting in severe personal injury, death, or substantial property damage.
and flame sense
start-up checkout
or performance
and clean burner using
Outdoor Knight XL User's Information Manual
Owner maintenance
(see the Outdoor Knight XL User's Information
Manual for instructions)
Daily
Monthly
and
Periodically
Every
6 months
End
of season
months
• Check boiler area
• Check pressure/temperature
gauge
• Check air and vent termination
screens
• Check relief valve
• Check condensate drain system
• Test low water cutoff (if used)
• Reset button (low water cutoff)
• Check boiler piping (gas and
water) for leaks
• Operate relief valve
• Shut boiler down (unless boiler
used for domestic hot water)
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