Maintaining The Water Heater; Cleaning The Water Heater; Draining The Water Heater - Navien NPE-32AWE Installation Manual

6. Maintaining the Water Heater

6.1 Cleaning the Water Heater

CAUTION
Make sure the water heater is turned off and the power
supply is disconnected before cleaning the water heater.
The water heater may remain hot for several minutes after
it is turned off. To prevent burns, wait until the water heater
has cooled down before cleaning.
To clean the water heater, wipe the outside with a damp
cloth. Use a non-acidic, non-abrasive cleaner to remove any
surface stains. The front panel is moisture resistant, but it is not
waterproof. Keep it as dry as possible.

6.2 Draining the Water Heater

You need to drain the water heater before performing
maintenance tasks, such as cleaning the inlet water filter or to
prevent the water heater from freezing when it will not be used
for an extended period.
Refer to the "2.6 Dimensions" on page 13 for details about
part locations.
To drain the water heater:
1. Place a bucket under the water heater, to collect the residual
water inside the water heater.
2. Press the Power button on the front panel to turn off the
power to the water heater.
42 Maintaining the Water Heater
3. Close the gas valve.
4. Close the water supply valve on the inlet to the water heater.
If there is no valve, turn off the water supply at the water
main.
5. Open all hot water faucets completely. The water that
remains in the plumbing lines will drain out.
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