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507787-01C mrcool.com Page 5 of 22
1. The air handler must be supported on the bottom only
frame.
2.
horizontal drain pan.
NOTE: The horizontal drain pan is not required in
3. Place the unit in the desired location and slope unit.
Connect return and supply air plenums as required
4. Install units that have no return air plenum on a stand
air return.
HORIZONTAL DRAIN PAN
(MUST BE REMOVED)
UP-FLOW /
DOWN-FLOW
DRAIN PAN
Figure 1.
Horizontal Applications
When removing the coil, there is a possibility of danger
of equipment damage and personal injury. Be careful
in right- or left-hand applications. The coil may tip into
the drain pan once it is clear of the cabinet. Support the
NOTE: When the unit is installed in horizontal applications,
codes.
NOTE:
air discharge horizontal applications. Adequate support
panels if installing in the horizontal position.
Right-Hand Discharge
1.
connections.
2. With access door removed, remove drain line plugs to
install drain lines.
3.
end of the unit and level from front to back of unit (see
Figure 6).
4.
Drains
AIR FLOW
PLUGS
RIGHT‐HAND DRAINS
Figure 2.
5. If the unit is suspended, the entire length of the cabinet
must be supported. If you use a chain or strap, use a
piece of angle iron or sheet metal attached to the unit
air plenums as required.
FRONT WEIVDNEWEIV
ANGLE IRON OR SHEET
METAL
E
ANCE 4 IN. (102 MM)
MAXIMUM 1/2"
LONG SCREW
AIR FLOW
Figure 3. Suspending Horizontal Unit
Left-Hand Air Discharge
1. Remove access panels and the corrugated padding
corrugated padding.
2. Pull the coil assembly from unit. Pull off the horizontal
drain pan.
3. Remove the drain plugs from back drain holes on
horizontal drain pan and reinstall them on front holes.
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