23
Periodic Maintenance
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 unit 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 (0.9L) 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).
Water Supply
Valve
(Ex. NRC711-DV)
Inlet
Packing
Water drain valve
(with water filter)
Water Drain Valve (with Water Filter)
