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UNIT INSTALLATION
Packaging Removal
Remove the shipping carton and User's Manual from the
equipment. For rooftop installations, remove and discard
the two supports attached beneath the unit.
Rigging & Hoisting
WARNING:
To avoid the risk of property damage, personal
injury, or death, it is the rigger's responsibility
to ensure that whatever means are used to hoist
the unit are safe and adequate:
• The lifting equipment must be adequate for the
load. Refer to Table 7 (page 22) for unit weights.
• The unit must be lifted from the holes in the
base rails using cables or chains.
• Spreader bars are required to protect the unit
and ensure even loading.
• Keep the unit in an upright position at all times.
The rigging must be located outside the units
center of gravity. Refer to Figure 9 (page 22)
for locating the center of gravity.
• All panels must be securely in place during
rigging and hoisting.
Clearances to Combustible Materials
These units are certified as combination heating and
cooling equipment for outdoor rooftop or ground level
installations. Units may be installed on combustible
flooring or Class A, B, or C roofing material when used
with bottom supply and return air ducts as long as the
following requirements are met:
• If using bottom discharge with return air ducts a roof
curb must be installed prior to unit installation. See
Rigging and Hoisting section for setting of the unit.
• Sufficient clearance for unobstructed airflow through
the outdoor coil must also be maintained in order to
achieve rated performance. See page 5 for information
about locating the equipment.
Rooftop
Rooftop installations must be located according to local
building codes or ordinances and these requirements:
• The roof must be capable of handling the weight of the
unit. For unit weights, see Table 7. Reinforce the roof
if necessary.
• The appropriate accessory roof curb (Figure 3, page 10)
must be installed prior to unit installation. The roof curb
must be square and level to ensure proper condensate
drainage. Please follow all instructions provided with
the kit.
• Secure roof curb or frame to roof using acceptable
mechanical methods per local codes. NOTE: Make sure
the two supports beneath the unit have been removed.
Ground Level
Ground level installations must be located according to
local building codes or ordinances and these requirements:
• Clearances must be in accordance with those shown
in Figure 1 (page 5).
• A suitable mounting pad must be provided and be
separate from the building foundation. The pad must be
level to ensure proper condensate disposal and strong
enough to support the unit's weight. The slab height
must be a minimum of 2" (5cm) above grade and with
adequate drainage. See Figure 4 (page 10).
• Remove and discard the horizontal Supply and Return
duct covers located on the rear of the unit. Form duct
attachment flanges by bending the sheet metal outward
90 degrees along the perforated lines.
• Firmly attach ductwork directly to these flanges with
screws or other approved mechanical connections and
not to the Supply/Return air panels to avoid damage to
internal components of the equipment. Once completed
use approved duct sealing methods to ensure an air
and watertight seal is achieved.
Horizontal to Downflow Conversion
The unit is shipped ready for horizontal duct connections.
If down flow ducts are required, the unit must be converted
following the steps below for both the supply and return
ducts.
1. Remove the horizontal duct cap.
2. Locate the duct cap inside the duct openings and remove
the screw holding it in place.
3. Lift the cap out of the unit. (Hint: The cap can be pushed
up from the bottom by reaching through the fork slot).
4. Cover the horizontal duct opening with the horizontal
duct cap. The insulation will be on the indoor side.
5. Fasten the cover with screws to seal.
6. Remove and discard the two wood supports beneath
the unit.
Condensate Drain
Condensate is removed from the unit through the 3/4"
female pipe fitting located on the front side of the unit.
See Figure 5 on page 10.
Install a 2 inch condensate trap in the drain line of the
same size and prime with water. When connecting rigid
drain line, hold the female fitting with a wrench to prevent
twisting. Do not over tighten! Refer to local codes and
restrictions for proper condensate disposal requirements.
9
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