Regular Maintenance - Noritz GQ-2457WS-FFA US Owner's Manual

Regular Maintenance

CAUTION
For laundry, newspaper, timber, oil,
Check
spray cans and other combustible
materials near the heater or the
exhaust vent terminal.
For abnormal sounds
Check
during operation.
For abnormalities in
Check
external appearance,
discoloration or flaws.
For proper operation of
Check
pressure relief valve.
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 unit may put out cold water. Check and clean the filter as explained below.
* To avoid burns, wait until the equipment cools down before draining the water.
The appliance will remain hot after it is turned off.
1. Close the water supply valve.
2. Open all hot water fixtures.
3. With a bucket ready, remove the inlet and outlet
drain plugs (about 0.2 gallon (0.95L) will drain out)
4. Take the water drain valve (with water filter) out of
the inlet. (See illustration to right).
5. Clean the water drain valve (with water filter) with
a brush under running water.
6. Replace the water drain valve (with water filter)
and close the drain plugs.
(Take care not to lose the packing.)
7. Close all hot water fixtures.
8. Open the water supply valve and check that
water does not leak from the drain plugs or water
drain valve (with water filter).
20
Periodic Inspection
To prevent burns or scalding, turn off the power button and
wait until the equipment cools before performing maintenance.
Be sure to do.
(Ex. NR83DVC (GQ-2457WS-FFA US))
Periodic Maintenance
Check
(Ex. NR83OD (GQ-2457WS US))
Check
Packing
Water Supply
Valve
(Ex. NR83DVC (GQ-2457WS-FFA US))
For dust and soot
in the flue terminal.
For water leaks from
the equipment and
piping.
Inlet
Water drain valve
(with water filter)