HTP Mod Con 300 HL, Installation & Maintenance Manual

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You must also install air intake piping from outdoors to the boiler flue adaptor. The resultant installation is
categorized as direct vent (sealed combustion).
NOTE: To prevent combustion air contamination, see
Table 1 in this section when considering exhaust vent and intake air vent termination.
Intake and exhaust vents must terminate near each other and may be vented vertically through the roof or
out a side wall. Intake and exhaust venting methods are detailed in the Venting Section. Do not attempt
installation using any other means. Be sure to locate the boiler so intake and exhaust vent piping can be
routed through the building and properly terminated. The air intake and exhaust vent piping lengths,
routing and termination method must all comply with methods and limits given in the venting section.
F. PREVENT COMBUSTION AIR CONTAMINATION
Install intake piping for the boiler as described in the Venting section. Do not terminate exhaust in
locations that can allow contamination of intake air.
You must pipe outside air to the boiler intake. Ensure that the intake air will not contain any of the
contaminants below. For example, do not pipe intake vent near a swimming pool. Avoid areas subject to
exhaust fumes from laundry facilities. These areas always contain contaminants. Contaminated air will
damage the boiler, resulting in possible substantial property damage, severe personal injury, or death.
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 – Contaminants
NOTE: DAMAGE TO THE BOILER CAUSED BY EXPOSURE TO CORROSIVE VAPORS IS NOT
COVERED BY WARRANTY.
(Refer to the limited warranty for complete terms and conditions).
G. REMOVING A BOILER FROM A COMMON VENT SYSTEM
Do not install the boiler 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.