Lochinvar 400-801 operation manual Maintenance Maintenance and annual startup, Service technician

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

UP

piping/expansion tank

• Check control settings

-

START

• Check

ignition

and

flame sense

electrodes (sand off any deposits; clean

and reposition)

ANNUAL

• Check wiring and connections

• Perform start-up checkout and performance

verification per Section 7.

• 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.

Daily

• Check boiler area

• Check pressure/temperature

gauge

• Check air and vent termination

Monthly

screens

• Check relief valve

• Check condensate drain system

• Test low water cutoff (if used)

Periodically

• Reset button (low water cutoff)

Every

• Check boiler piping (gas and

water) for leaks

6 months

• Operate relief valve

End

• Shut boiler down (unless boiler

of season

used for domestic hot water)

months