Use and Care Manual

TANKLESS WATER HEATER
Ensure that the intake air will not contain any of the contaminants below.
For example, do not pipe intake near a swimming pool. Avoid areas subject to
exhaust fumes from laundry facilities. These areas always contain contaminants.
Contaminated air will damage the water heater, resulting in possible substantial property damage, severe
personal injury, or death.
Do not install the water heater into a common vent with any other appliance.
This will cause flue gas spillage or appliance malfunction, resulting in possible
substantial property damage, severe personal injury, or death.
Failure to follow all instructions can result in flue gas spillage and carbon mon-
oxide emissions, causing severe personal injury or death.
You must also install air intake piping from outdoors to the water heater flue adaptor. The resultant installation
is categorized as direct vent (sealed combustion).
Exhaust vent and intake pipe may be vented vertically through the roof or out a sidewall. Venting methods are
detailed in the Venting Section. Do not attempt installation using any other means. Be sure to locate the water
heater so exhaust vent and intake piping can be routed through the building and properly terminated. Exhaust
vent and intake piping lengths, routing, and termination method must comply with methods and limits given in
the venting section.
F. PREVENT COMBUSTION AIR CONTAMINATION
Install intake piping for the water heater as described in the Venting section. Do not terminate exhaust in
locations that can allow contamination of intake air.
NOTE: DAMAGE TO THE WATER HEATER CAUSED BY EXPOSURE TO CORROSIVE VAPORS IS
NOT COVERED BY WARRANTY. (Refer to the limited warranty for complete terms and conditions).
G. REMOVING A WATER HEATER FROM A COMMON VENT SYSTEM
Table 7
Products to Avoid Areas Likely to have contaminants
Spray cans containing uorocarbons Dry cleaning/laundry areas and establishments
Permanent wave solutions Swimming Pools
Chlorinated waxes/cleaners Metal fabrication plants
Chlorine based swimming pool chemicals Beauty shops
Calcium chloride used for thawing
Re
frigeration repair shops
Sodium chloride used for water softening Photo processing plants
Refrigerant leaks Auto body shops
Paint or varnish removers Plastic manufacturing plants
Hydrochloric or Muriatic acid Furniture renishing areas and establishments
Cements and Glues New building construction
Antistatic fabric softeners used in clothes dryers Remodeling areas
Chlorine-type bleaches, laundry detergents, and cleaning solvents Garages and workshops
Adhesives used to fasten building products
18
WARNING
DANGER
DANGER
NOTE: To prevent combustion air contamination, see Table 7 in this section when considering exhaust
vent and intake pipe termination.