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4.3.3 Indoor Water Heaters
• DO NOT install the water heater in areas
where combustion air might be
contaminated with chemicals.
• Install the water heater as far away as
possible from any air inlet vents.
Corrosive fumes, sometimes found in
hair/ nail salons, spas, or other industries
exposed to toxic fumes, may be released
through these vents when not in operation.
Chemicals that are corrosive in nature
should not be stored or used near the
water heater or vent termination. This re-
quirement applies to internal (indoor) and
external (outdoor) water heaters.
• Where possible, install internal (indoor)
water heaters in a sealed closet so that it
is protected from the potential of
contaminated indoor air.
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4.3.4 Outdoor Water Heaters
Rinnai Tankless Water Heater Installation and Operation Manual
and Vent Terminations
• Install the water heater as far away as
possible from exhaust vent hoods and
dryer vents.
• Damage and repair due to corrosive
compounds in the air are not covered by
warranty.
• Install the water heater as far away as
possible from any air inlet vents.
Corrosive fumes, sometimes found in
hair/ nail salons, spas, or other industries
exposed to toxic fumes, may be released
through these vents when not in operation.
Chemicals that are corrosive in nature
should not be stored or used near the
water heater or vent termination. This re-
quirement applies to internal (indoor) and
external (outdoor) water heaters.
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