Cleaning The Water Heater - Noritz NRCP1112-DV Owner's Manual

Chapter 4. – Maintenance

2. Cleaning the Water Heater

1. Cleaning Air Intake Filter
To properly maintain the water heater, you should check air intake filter every month. If not, you will encounter a problem with
combustion specifications.
To clean air intake filter:
1. Press the Power button on the control panel to turn off the
water heater.
2. Disconnect the power supply from the water heater.
3. If water heater has been operating, wait for it to cool before
continuing.
5. Remove the filter screen screw and pull the filter out of the
air intake adapter.
7. Dry the filter completely. Then reinsert the filter into the plastic assembly and tighten the filter screen screw.
8. Replace the front cover of the water heater cabinet. Reconnect power supply to the water heater.
9. Press the Power button on the control panel to turn on the water heater.
2. When supplying combustion air from the indoors.
To clean air supply vent:
Check for debris or blockage from dust, oil, etc. at the air supply vent. If blocked, remove the build-up with a vacuum cleaner or
damp towel. (Do not permanently remove the inlet screen.)
4. Remove the 4 screws on the front cover of the water heater.
6. Clean it with a toothbrush and clean running water.
Maintaining the Water Heater
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