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507788-01C mrcool.com Page 5 of 20
1. The air handler must be supported on the bottom only
frame.
2.
horizontal drain pan.
NOTE:
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 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
IMPORTANT
NOTE:
NOTE:
Drains
AIR FLOW
PLUGS
RIGHT‐HAND DRAINS
Figure 2.
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 7).
4.
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.
After removal of drain pan plug(s), check drain hole(s)
to verify that drain opening is fully open and free of any
debris. Also check to make sure that no debris has
fallen into the drain pan during installation that may plug
up the drain opening.
IMPORTANT
4. Rotate drain pan 180º front-to-back and install it on the
opposite side of the coil.
5.
6. Remove plastic plug from left hole on coil front end
seal and reinstall plug in back hole.
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