Periodic Inspection; Periodic Maintenance - Noritz NR501-OD Service Manual

R
CAUTION
[When supplying combustion air
from the indoors]
For smear or blockage
Check
with 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.
For laundry, newspaper,
Check
timber, oil, spray cans
and other combustible
materials near the heater
or the exhaust vent
terminal.
For water leaks from the
Check
unit and piping.
For blockage at the
Check
drain pipe discharge.
Unit
Wipe the outside surface with a wet cloth, then dry the surface. Use a neutral detergent to clean any stains.
If an external condensate neutralizer is installed, periodic replacement of the neutralizing agent will be required.
Refer to the instructions supplied with the neutralizer for suggested replacement intervals.
Optional Remote Controller
Wipe the surface with a wet cloth.
• Do not use benzene, oil or fatty detergents to clean the remote controller;
deformation may occur.
• The remote controller is water resistant but not water proof. Keep it as dry as possible.
22

Periodic Inspection

To prevent burns or scalding, turn off the power
button or power supply and wait until the unit
cools before performing maintenance.
Be sure to do.
Air supply vent
(Ex. NRC711-DV)

Periodic Maintenance

68
For dust and soot in
Check
the exhaust vent or
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.