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INSTALLATION INSTRUCTIONS
Determine Installation Location
You must ensure that clearances will be met and that the vent
length will be within required limits. Consider the installation
environment, water quality, and need for freeze protection. Re-
quirements for the gas line, water lines, electrical connection, and
condensate disposal can be found in their respective installation
sections of this manual.
Water Quality
Consideration of care for your water heater should include evalu-
ation of water quality.
Water that contains chemicals exceeding the levels below
will affect and damage the heat exchanger. Replacement
of the heat exchanger due to water quality damage is not
covered by the warranty.
Table 2
Total Hardness
Aluminum *
Chlorides *
Copper *
Iron *
Manganese *
pH *
TDS (Total Dissolved Solids) *
Zinc *
* Source: Part 143 National Secondary Drinking Water Regulations.
If you install this water heater in an area that is known to have hard
water or that causes scale build-up, the water must be treated and/
or the heat exchanger flushed regularly.
When scale build-up in the heat exchanger begins to affect the
performance of the water heater, the diagnostic code "LC #" will
display. Flush the heat exchanger to prevent damage to it. Scale
build-up is caused by hard water set at a high temperature.
Environment
Air surrounding the water heater, venting, and vent termination(s)
is used for combustion and must be free of any compounds that
cause corrosion of internal components. These include corrosive
compounds that are found in aerosol sprays, detergents, bleach-
es, cleaning solvents, oil based paints/varnishes, and refrigerants.
The air in beauty shops, dry cleaning stores, photo processing
labs, and storage areas for pool supplies often contains these
compounds.
The water heater, venting, and vent termination(s) should not be
installed in any areas where the air may contain these corrosive
compounds. If it is necessary for a water heater to be located in
areas which may contain corrosive compounds, the following in-
structions are strongly recommended.
Maximum Level
Up to 200 mg / L
Up to 0.2 mg / L
Up to 250 mg / L
Up to 1.0 mg / L
Up to 0.3 mg / L
Up to 0.05 mg / L
6.5 to 8.5
Up to 500 mg / L
Up to 5 mg / L
5
IMPORTANT CONSIDERATIONS FOR:
Indoor/Internal Water Heaters and Vent Terminations of
Indoor/Internal Water Heaters
• DO NOT install in areas where air for combustion can be
contaminated with chemicals.
• Before installation, consider where air has the ability to travel
within the building to the water heater.
• Where possible, install the water heater in a sealed closet so
that it is protected from the potential of contaminated indoor
air.
• Chemicals that are corrosive in nature should not be stored
or used near the water heater.
• Install the water heater termination as far away as possible
from exhaust vent hoods.
• Install the water heater termination as far away as possi-
ble from air inlet vents. Corrosive fumes may be released
through these vents when air is not being brought in through
them.
• Chemicals that are corrosive in nature should not be stored
or used near the water heater or vent termination.
Damage and repair due to corrosive compounds in the air is not
covered by warranty.
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