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Wipe the outside surface with a wet cloth, then dry the surface.
Use a neutral detergent to clean any stains.
• 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.
Equipment
Remote Controller
Wipe the surface with a wet cloth.
Periodic Maintenance
* Isolation valves may be purchased as an
accessory from an authorized Noritz wholesaler.
They allow for full diagnostic testing and easy
flushing of the system.
* The kit includes two full port isolation valves
and a pressure relief valve for the hot side.
Contact Noritz for more information.
Isolation Valves
For people who live in a hard water area, periodical flushing is necessary. If the Heat Exchanger is not flushed,
the Scale Build-up may cause damage to the Heat Exchanger. In this case, this water heater will detect the Scale
Build-up in the Heat Exchanger and then the error code "
"* will be displayed on the Remote Controller.
When the error code "
"* is flashing on the Remote Controller, the Heat Exchanger needs to be flushed to
prevent damage from Scale Build-up. Please contact Noritz America for more information about flushing the
Heat Exchanger. (http://support.noritz.com/ or 866-766-7489)
* = 1, 2, 3, 4, F
# = 0, 1, 2, 3, 4, 5, 6, 7, 8, 9
Total Hardness**
: 200 mg/L (12 gpg) or less
Aluminum
: 0.05 to 0.2 mg/L or less
Chloride
: 250 mg/L or less
Copper
: 1 mg/L or less
Iron
: 0.3 mg/L or less
Manganese
: 0.05 mg/L or less
pH
: 6.5 - 8.5
Total Dissolved Solids
: 500 mg/L or less
Zinc
: 5 mg/L or less
Sulfate ion
: 250 mg/L or less
Residual chlorine
: 4 mg/L or less
** Maximum limit suggested by Noritz.
Damage to the water heater as a result of
below is not covered by the Noritz America
Limited Warranty.
To ensure full warranty coverage, treat or
condition water that exceeds the target
levels provided in this table.
- Hard water
- Poor water quality (See the right list.)
- The water heater has displayed a "
"
error code indicating Scale Build-up, but the
heat exchanger has not been flushed.
Source: EPA National Secondary Drinking Water Regulations
(40 CFR Part 143.3)
Water Quality and Maintenance
Water Intlet
Water Outlet
Drain
Hot Water
Service Valve
Pressure Relief Valve
Cold Water
Service Valve
(Ex. NR83DVC (GQ-2457WS-FFA US))