Check Boiler Area; Check Pressure Temperature Gauge; Check Vent Piping; Check Air Piping - Lochinvar KNIGHT 399 - 800 User's Information Manual

(see the Knight XL Service Manual)
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
• Check system water pressure/system
piping/expansion tank
• Check control settings
• Check ignition and flame sense
electrodes (sand off any deposits; clean
and reposition)
• Check wiring and connections
• Perform start-up
performance verification per Section 10
in the Knight XL 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 (30°C)
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
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.
(see pages 6 - 8 for detailed instructions)
checkout and
Periodically
of season
User's Information Manual

• 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 air vents

• Test low water cutoff (if used)

• 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
used for domestic hot water)
months
5