Noritz N-0751M-NG - Maintenance

Inspection

• Check for laundry, newspaper, timber, oil, spray cans and other combustible materials.

• Check for abnormal sounds during operation.

• Check for abnormalities in external appearance, change in color or flaws.

• Check for proper operation of pressure relief valve.

• Check for water leaks from the equipment and piping.

• Check for dust and soot in the exhaust vent or exhaust vent terminal.

Equipment

• Wipe the outside surface with a wet cloth, then dry the surface. Use a neutral detergent to clean any stains.

Remote Controller

• Wipe the surface with a wet cloth.

Do not use benzene, oil or fatty detergent to clean the remote controller. Deformation may occur.

The remote controller is waterproof, but it should be kept dry as much as possible.

CAUTION: Do not remove the air inlet filter. If it is removed or damaged, please contact Noritz America. Damage caused by operating the water heater without the air inlet filter is not covered under warranty.

• Check whether or not the air inlet filter is clogged with dust, trash or the like. If clogged, remove the build-up with a vacuum cleaner.

• * Do not permanently remove the air Inlet filter.

If the 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.

Water Filter (with Water Filter) Maintenance

• Close the water supply valve.

• Open all hot water fixtures

• With a bucket ready, remove the inlet and outlet drain plugs (about 0.2 gallon (0.8L) will drain out)

• Take the water drain valve (with water filter) out of the inlet.

• Clean the water drain valve (with water filter) with a brush under running water.

• Replace the water drain valve (with water filter) and close the drain plugs. (Take care not to lose the packing.)

• Close all hot water fixtures.

• Open the water supply valve and check that water does not leak from the drain plugs or water drain valve (with water filter).