HTP PH100-55 - Prevent Combustion Air Contamination; Removing a Heater from a Common Vent System

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Do not attempt to vent this appliance by any means other than those described in this manual. Doing so
will void the warranty, and may result in severe personal injury or death.
Failure to provide an adequate supply of fresh combustion air can cause poisonous flue gases to enter
living space, which could result in severe personal injury or death. NOTE: To prevent combustion air
contamination, see Table 1.
F. PREVENT COMBUSTION AIR CONTAMINATION
Install intake air piping for the heater as described in the Venting Section. Do not terminate exhaust in
locations that can allow contamination of intake air.
Ensure that the intake air will not contain any of the contaminants below. Contaminated air will damage
the heater, resulting in possible substantial property damage, severe personal injury, or death. For
example, do not pipe intake air vent near a swimming pool. Also, avoid areas subject to exhaust fumes
from laundry facilities. These areas always contain contaminants.
PRODUCTS TO AVOID
AREAS LIKELY TO HAVE CONTAMINANTS
Spray cans containing fluorocarbons
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
Refrigeration 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 refinishing 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
Table 1 – Contaminant Table
G. REMOVING A HEATER FROM A COMMON VENT SYSTEM
Do not install the 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 monoxide emissions, causing
severe personal injury or death.
NOTE: DAMAGE TO THE HEATER CAUSED BY EXPOSURE TO CORROSIVE VAPORS IS NOT
COVERED BY WARRANTY. (Refer to the limited warranty for complete terms and conditions).