Product manual

12 McQuay IM 782-4
Installation Guidelines
Reversing the Drive Package
A motor side or “hand” is determined by looking in the
direction of air flow with the air contacting the back of the
head. The drive package on the air handler can be changed to
the other side of the blower. The motor base and motor are
attached to back of the fan housing. They can be removed,
rotated 180 degrees, and reattached. The fan sheave can be
removed and reinstalled on the opposite end of the shaft
(Figure 12). Review “Fan Drive Belt Adjustment” on page 28
when reinstalling the belts.
To reverse the drive package:
1 Loosen the belt adjustment screws to relieve the drive
belt tension.
2 Remove the drive belt and the blower pulley.
3 Loosen the two upper bolts on the motor mounting plate
and slide the motor out from the blower housing mount.
4 Move the top motor mounting bolts to the bottom motor
mounting plate location and vice versa. Fasten securely.
5 Turn the motor 180° and slide it back into the blower
housing mount and tighten bolts.
Note: Change the motor wiring so the motor rotates in the
opposite direction.
1 Install the blower pulley and the belt to the other side of
the blower housing.
2 Adjust belt tension.
Figure 12: Reversing the Drive Package
Hanging the Unit from a Ceiling
Before hanging, rig and completely assemble the unit.
The Destiny air handler has circular knockouts on the corner
connections. Remove the knockouts and suspend the unit using
threaded rods and hardware with required C-channels on both
sides as shown in Figure 9. On unit sizes 007 and larger,
L-channels are required on both ends in addition to
C-channels. For 002 - 010 sized ceiling hung units, spring
isolation of the cabinet is recommended. See Figure 9.
Figure 13: Ceiling Hung Installation, Horizontal Units Only
Belt
adjustment
bolts (2)
Upper motor
mounting
plate bolts (2)
Lower motor
mounting
plate bolts (2)
WARNING
Do not suspend the unit from the top. The unit top will not
support the weight of the unit. Equipment damage and severe
personal injury can result.
AVERTISSEMENT
Ne pas suspendre l’unité par le toit. Le dessus de l’unité ne
supportera pas le poids de l’unité. Ceci pourrait entraîner des
dommages à l’unité ou des blessures personnelles graves.
C-channels are required on all units.
On unit sizes 007 and above, L-channels
on both ends are also required.
Spring Isolators