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Page 2 of 13 507295-02Cmrcool.com
Installation
These instructions must be saved for future reference.
These units are single package air conditioners with gas
heat designed for outdoor installation on a rooftop or a
slab.
The units are completely assembled. All piping, refrigerant
charge, and electrical wiring are factory installed and
tested. The units require only electric power, gas piping,
condensate drain, and duct connections, plus installation
of the vent cover at the point of installation.
If components are to be added to a unit to meet local codes,
they are to be installed at the dealer’s and/or customer’s
expense.
The size of unit for the proposed installation should be
based on heat loss/heat gain calculation made according
to the methods of Air Conditioning Contractors of America
(ACCA).
In the State of Massachusetts:
This product must be installed by a licensed Plumber
maximum length shall not exceed 36”. When lever-type
gas shutoffs are used, they shall be T-handle type.
WARNING
These installation instructions are intended as a
contractor.
Inc.:
• For use as a forced air furnace with cooling unit.
• For outdoor installation only.
• For installation on combustible material.
• For use with natural gas or propane gas. (Conversion
kit required for propane gas application.)
These units are not suitable for use with conventional
venting systems.
Inspection
As soon as the unit is received, it should be inspected
for possible damage during transit. If damage is evident,
the extent of the damage should be noted on the carrier’s
freight bill. A separate request for inspection by the carrier’s
agent should be made in writing.
Location
Use the following guidelines to select a suitable location
for these units.
1. Unit is designed for outdoor installation only. Unit must
be installed so all electrical components are protected
from water.
2. Condenser coils must have an unlimited supply of air.
3. For ground level installation, use a level prefabricated
pad or use a level concrete slab. Do not tie the slab to
the building foundation.
4. Maintain level within a tolerance of 1/4” maximum
across the entire length or width of the unit.
CAUTION
5. Do not locate the unit where the combustion air supply
will be exposed to any of the following substances:
• Permanent wave solutions
• Chlorinated waxes and cleaners
• Chlorine-based swimming pool chemicals
• Water softening chemicals
• Deicing salts or chemicals
• Carbon tetrachloride
• Halogen-type refrigerants
• Cleaning solvents (such as perchloroethylene)
• Printing inks, paint removers, varnishes, etc.
• Cements and glues
• Antistatic fabric softeners for clothes dryers
• Masonry acid washing materials
• Chlorinated laundry products
• Hydrochloric acid
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