Ducane CMP A Series Installation Instructions Manual page 3

WARNING
Do not place combustible material on the
furnace jacket. Failure to comply with this
warning will create a fire hazard.
WARNING
This furnace is not watertight and is not
designed for outdoor installation. This
furnace shall be installed in such a manner
as to protect the electrical components from
water. Outdoor installation would lead to a
hazardous electrical condition and to
prematu're furnace failure.
Air for Combustion and Ventilation:
Contaminated CombustionAir If the furnace is to be
installed in a structure defined as having contaminated combustion
air, the furnace must use the direct vent (two pipe) configuration
using non-contaminated outside air for combustion. Allowing
exposure to substances containing chlorine or fluoride could harm
the furnace. Substances to avoid include, but are not limited to:
Permanent wave solutions
Chlorinated waxes and cleaners
Chlorine based swimming pool chemicals
Water softening chemicals
De-icing salts or chemical
Carbon tetrachloride
Halogen type refrigerants
Cleaning solvents (such as perchloroethylene)
Printing inks, paint removers, varnishes, etc.
Hydrochloric acid
Cements and glues
Antistatic fabric softeners for clothes dryers
Masonry acid washing materials
WARNING
Contaminated combustion air may cause
premature failure of the heat exchanger that
may lead to a hazardous condition and/or
bodily harm, or loss of life.
Adequate Ventilation and Combustion Air This
section is provided to give guidelines for the introduction of air for
ventilation and combustion air. The total quantity of air provided
to the installation area must equal the requirements of all gas
appliances in the area.
Adequate facilities ior providing air for combustion and
ventilation must be provided in accordance with the latest editiou
of section 5.3. Air for Combustion and Ventilation, of the National
Fuel Gas Code ANSI Z223.1 or Sections 7.2. 7.3 or 7.4 of
CAN/CGA B149 Installation Codes, or applicable provisions of
the local building codes.
The furnace shall be installed in a location in which the
facilities for ventilation permits satisfactory combustion of gas,
proper venting and maintenance of ambient temperature at safe
limits under normal conditions of use. The furnace shall be located
so as not to interfere with proper circulation of air.
In addition to air needed for combustion, ventilation in the
form of process air must be provided as required for: cooling of
equipment or material, controlling dew point, heating, drying,
oxidation or dilution, safety exhaust and odor control. Air must be
supplied for ventilation, including all air required for comfort and
proper working conditions for personnel. Direct venting (two
pipe) allows for the combustion air to be supplied directly to
the _rnace from the outdoors. Ventilation needs only to be
considered when furnace is installed as direct vent (two pipe).
Non-direct venting (one pipe) requires both combustion and
ventilation air requirements from the furnace location. For
purposes of this instrncdon the following definitions apply:
Unconfined Space: A space whose volume is not less than
50 cubic feet per 1000 Btu per hour of
the aggregate input rating of all
appliances installed in that space.
Rooms communicating directly with
the space in which the appliances are
installed, through openings not
furnished with doors, are considered a
part of the unconfined space.
Confined Space:
A space whose volume is less than 50
cubic feet per 1000 Btu per hour of the
aggregate input rating of all appliances
installed in that space.
If the installation area meets the definition of "Unconfined
Space" and does not have additional air requirements as described,
the furnace may be installed without making special provisions for
combustion and ventilation air.
CAUTION
Whenever this furnace is installed in an area
along with one or more gas appliances, the
total Btu input of all appliances must be
included when determining the free area
requirements for combustion and ventilation
air openings.
20246506 Issue 9939 Page 3 of 22