Owner's Manual

9. EXHAUST PIPE (ONCE A YEAR)

A clogged exhaust pipe will cause improper

combustion. Inspect for any clogging or soot

accumulation should be done at least once every

year. Make sure not to place combustibles in the

exhaust pipe area.

10.PRESSURE RELIEF VALVE (ONCE A MONTH)

The pressure relief valve may become immovable

at times due to corrosion of pipes or mineral

deposits In the pipes. Pull up the lever of the

pressure relief valve every month and make sure

the valve is movable.

11. PLUG AND RECEPTACLE (ONCE A MONTH)

Make sure the plug is free of dust. Be sure plug fits receptacle securely.

12.BURNER INSPECTION (ONCE SIX MONTHS)

Check the burner and combustion area for soot. Clean if found.

13.GASKETS AND WASHERS (ONCE SIX MONTHS)

Check for water leaks caused by improper sealing of the water pipe. If there are leaks,

gaskets or sealant must be replaced.

14.FLAME SENSOR (PHOTOELECTRIC CELL)

(ONCE SIX MONTHS)

a. Take out the flame sensor which is located to

the left of the burner inside the cabinet.

b. If the receiving surface of the flame sensor

becomes dirty or contaminated, the unit will not

operate properly. The receiving surface should

be wiped with a soft cloth every 6 months.

15.BLOWER MOTOR (ONCE SIX MONTHS)

Make sure there is no dust on the blower motor fan.

16.HEAT EXCHANGER (ONCE A YEAR)

Open the drain valve at least once a year to drain the heat exchanger. Pull up the lever of

the pressure relief valve to allow air to enter the heat exchanger.

17.WATER STRAINER OF PRESSURE REDUCING VALVE (ONCE A YEAR)

When the waste particles accumulate in the water strainer, water may not run properly from

the faucet. Remove the water strainer of the pressure reducing valve for cleaning.

a. Drain the water inside of the heat exchanger by the draining method specified under

“PREVENTING FREEZE UP”.

b. Remove the cover of pressure reducing valve on the left side of the unit.

c. Remove the hexagonal nut of the drain valve part by turning to the left and pull out the

water strainer from the inside.

d. Wash the water strainer with a soft brush.

e. Make sure there are no leaks after reinstalling the water strainer.