16
Regular Maintenance
Periodic Maintenance
Check : C
• For abnormal sounds during operation.
• For abnormalities in external appearance,
discoloration or flaws.
Check : D
For proper operation of pressure relief valve.
Check : E
For water leaks from the Water Heater and piping.
Check : F
For blockage at the condensate drain pipe
discharge.
Check
For laundry, newspaper, timber, oil, spray cans and
other combustible materials near the Water Heater
or the exhaust vent terminal.
Water Heater
Remote Controller
Wipe the outside surface with a wet cloth, then dry
the surface. Use a neutral detergent to clean any
stains.
If an external condensate neutralizer is installed,
periodic replacement of the neutralizing agent will
be required. Refer to the instructions supplied with
the neutralizer for suggested replacement intervals.
Wipe the surface with a wet cloth.
NOTE
• Do not use chlorine-based, acidic,
alkaline detergents, organic solvents
such as benzine and thinner, or
Melamin Sponge to clean the
Remote Controller.; discoloration,
deformation, scratches or cracks may
occur.
• The Remote Controller is water
resistant but not water proof. Keep
it as dry as possible.
Water Drain Valve (with Water Filter)
If the water drain valve (with water filter) is covered
with debris, the hot water may not run smoothly,
or the Water Heater may put out cold water. Check
and clean the filter as explained below.
1. Close the hot water valve, the water supply
valve, and the hot water return valve.
5. Open the hot water valve, the water supply
valve, and the hot water return valve.
Check that water does not leak from the water
drain valves.
3. Clean each water filter with a brush under
running water.
4. Reattach the water drain valves (with water
filter).
NOTE
Do not lose the O-Ring.
2. With a bucket ready, remove the water drain
valves.
NOTE
Approximately 0.85 gallon (3.2 L) of
water will drain out.
To prevent burns or scalding, turn off the
button and wait until the appliance cools before
draining the water.
WARNING
Hot water
return valve
Filter in the hot
water return
Filter in the cold
water inlet
O-Ring
Water drain valve
with water filter
Hot water valve
Water supply
valve
