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CLEARANCES
The clearances listed on the unit dimension drawing
(Figure 9) are required for the proper service and opera
-
tion of the unit.
RIGGING AND HANDLING
Be careful when moving the unit. Do not remove any
packaging until the unit is near its final location.
The packaging consists of a bottom wooden skid that
can be lifted with a fork truck from any direction, a card
-
board container that covers the entire unit, and strapping
that secures the cardboard container to the bottom of the
skid.
These units can be rigged with slings under the bottom
skid.
CAUTION: Spreader bars should be used to prevent slings
from crushing the unit panels and frame.
Before rigging any unit, determine its weight from Ta
-
ble 2. Before rigging a unit for horizontal installation,
make sure that its weight will be distributed equally.
VERTICAL/HORIZONTAL INSTALLATION
The unit is shipped for vertical installation with a vertical
air discharge asshown inFigure 2, but may beconverted
for horizontal installation as shown in Figure 2 by inter-
changing the solid bottom panel and the return air duct
flange.
DUCT CONNECTIONS
All ducts should be designed andinstalled in accordance
with applicable national and/or local codes.
Refer to Figure 3 for suggested method of connecting
supply air ductwork.
Ducts should be sized no smaller than the duct flanges
on the unit or the accessory electric heater (if used). Ref
-
er to the unit dimensions (Figure 1) and the heater detail
(Figure 4) for these sizes.
Use flexible fiber glass or plastic cloth collars or other
non-flammable material at the unit duct connections to
minimize the transmission of noise and vibration.
Insulate all ductwork running through unconditioned ar-
eas to prevent moisture condensation and to provide
more economical operation.
The return air ductflange is factory-mounted on the front of the
unit, but it can be reversed with the solid bottom panel for hori
-
zontal applications. When the return air grille is used, the duct
connection frame is not used.
NOTE: If return air duct is not used, applicable lnstalltion
codes may limit the unit to installation only in a single
story residence.
The field installed air plenum and return air grille accessories
should be used in place of ductworkonly when a freeblow/free
return application is practical.
4 Unitary Products Group
550.39-N4YI
FIG. 2 - VERTICAL AND HORIZONTAL APPLICATION
FIG. 3 - SUPPLY AIR DUCT CONNECTION
FIG. 4 - ELECTRIC HEATER ACCESSORY
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