UNIT LOCATION
WARNING
TO PREVENT POSSIBLE EQUIPMENT DAMAGE, PROPERTY DAMAGE, PERSONAL INJURY OR DEATH, THE FOLLOWING BULLET POINTS MUST BE OBSERVED WHEN INSTALLING THE UNIT.
IMPORTANT NOTE: Remove wood shipping rails prior to installation of the unit. See important note under Roof Curb Installation Only.
ALL INSTALLATIONS:
IMPORTANT NOTE: Unit should be energized 24 hours prior to compressor start up to ensure crankcase heater has sufficiently warmed the compressors. Compressor dam- age may occur if this step is not followed.
NOTE: Appliance is shipped from factory for vertical duct application.
Proper installation of the unit ensures
•For proper operation and condensate drainage, the unit must be mounted level.
•The flue outlet hood must be at least three feet above any forced air inlet located within ten feet. The economizer/manual fresh air intake/motorized fresh air intake and combustion air inlet mounted on the unit are not affected by this restriction.
•Do not locate the unit in an area where the outdoor air (i.e. combustion air for the unit) will be frequently contaminated by compounds containing chlorine or fluorine. Common sources of such compounds include swimming pool chemicals and chlorine bleaches, paint stripper, adhesives, paints, varnishes, sealers, waxes (which are not yet dried) and solvents used during construction and remodeling. Various commercial and industrial processes may also be sources of chlorine/ fluorine compounds.
•To avoid possible illness or death of the building occupants, do NOT locate outside air intake device (economizer, manual fresh air intake, motorized fresh air intake) too close to an exhaust outlet, gas vent termination, or plumbing vent outlet. For specific distances required, consult local codes.
•Allow minimum clearances from the enclosure for fire protection, proper operation, and service access (see Unit Clearances). These clearances must be permanently maintained.
•When the unit is heating, the temperature of the return air entering the unit must be between 50°F and 100°F.
GROUND LEVEL INSTALLATIONS ONLY:
•When the unit is installed on the ground adjacent to the building, a level concrete (or equal) base is recommended. Prepare a base that is 3” larger than the package unit footprint and a minimum of 3” thick.
•The base should also be located where no runoff of water from higher ground can collect in the unit.
ROOF TOP INSTALLATIONS ONLY:
•To avoid possible property damage or personal injury, the roof must have sufficient structural strength to carry the weight of the unit(s) and snow or water loads as required by local codes. Consult a structural engineer to determine the weight capabilities of the roof.
•The unit may be installed directly on wood floors or on Class A, Class B, or Class C roof covering material.
•To avoid possible personal injury, a safe, flat surface for service personnel should be provided.
•As indicated on the unit’s data plate, a minimum clearance of 36” to any combustible material is required on the access side of the unit. All combustible materials must be kept out of this area.
•This 36” clearance must also be maintained to insure proper combustion air flow. The combustion air intake must not be blocked for any reason, including blockage by snow.
•Adequate clearances from the unit to any adjacent public walkways, adjacent buildings, building openings or openable windows must be maintained in accordance with National Codes.
UNIT PRECAUTIONS
•Do not stand or walk on the unit.
•Except for holes in the wiring entrances (see Figure below), do not drill holes anywhere in panels or in the base frame of the unit. Unit access panels provide structural support.
ELECTRICAL ENTRANCE LOCATIONS
•Do not remove any access panels until unit has been installed on roof curb or field supplied structure.
•Do not roll unit across finished roof without prior approval of owner or architect.
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