40
Troubleshooting-3
Damage to the water heater as a result
of poor water quality is not covered by
the Limited Warranty. To ensure full
warranty coverage, treat or condition
water that exceeds the target levels
provided in this table.
Source: EPA National Secondary Drinking Water
Regulations (40 CFR Part 143.3)
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.
The water appears blue
The bath tub/wash-basin has turned
blue
• Coloration to a blue color may be noticed from small
traces of copper ion contained in the water and fat
(furring). However, there are not problems concerning
health. Coloration of the bath tub/wash-basin can be
prevented by cleaning frequently.
The Heater stops burning during
operation.
• Are the gas and water supply valves fully open?
• Is the water supply cut off?
• Is the hot water
fixture/faucet sufficiently open?
• Is the gas being cut off by the gas meter?
(Can other gas devices such as stoves be used?)
• (For LP) Is there enough gas in the tank?
(Can other gas devices such as stoves be used?)
• This is normal. The white smoke is actually steam.
White smoke comes out of the
exhaust vent on a cold day.
The hot water is turbid.
• This is harmless. Small bubbles appear as the air in the
water is heated and depressurized rapidly to
atmospheric pressure.
Other
Water Quality
A small amount of water is discharged
from the pressure relief valve.
• This is normal. When the water heater is under high
pressure, a small amount of water may be discharged
from the pressure relief valve.
Содержание NC1991-DVC
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