Horizontal Left-Hand Discharge Application; Suspending Horizontal Unit; Left-Hand Discharge Configuration - Lennox CBX40UHV Series Installation And Service Procedure

1/2 IN. SCREWS MAXIMUM
ANGLE IRON OR
SHEET METAL
FRONT VIEW
Figure 26. Suspending Horizontal Unit
IMPORTANT
When removing the coil, there is possible danger of
equipment damage and personal injury. Be careful when
removing the coil assembly from a unit installed in right-
or left-hand applications. The coil may tip into the drain
pan once it is clear of the cabinet. Support the coil when
removing it.

Horizontal Left-Hand Discharge Application

Use the following procedures to configure the unit for
horizontal left-hand air discharge operations:
1. Pull the coil assembly from unit. Remove the
horizontal drain pan.
2. Remove the drain plugs from back drain holes on
horizontal drain pan and reinstall them on front holes.
IMPORTANT
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.
3. Rotate drain pan 180º front‐to‐back and install it on the
opposite side of the coil.
4. Remove screws from top cap. Remove horizontal drip
shield screw located in the center of the back coil end
seal.
5. Rotate horizontal drip shield 180º front to back.
6. Remove plastic plug from left hole on coil front end seal
and reinstall plug in back hole. Reinstall horizontal drip
shield screw in front coil end seal. Drip shield should
drain downward into horizontal drain pan inside coil.
7. Rotate top cap 180º front‐to‐back and align with
unused screw holes. Holes must align with front and
back coil end plates. The top cap has a 45º bend on one
side and a 90º bend on the other. The 90º bend must be
on the same side as the horizontal drain pan.
CBX40UHV
ELECTRICAL INLET
CLEARANCE 4 IN. (102 MM)
END VIEW
Page 39
NOTE - Be very careful when you reinstall the screws into
coil end plate engaging holes. Misaligned screws may
damage the coil.
8. From the upflow position, flip cabinet 90º to the left and
set into place. Replace coil assembly. Secure coil in
place by bending down the tab on the cabinet support
rail as illustrated in figure 27.
CABINET
SUPPORT
90º
BEND
DRAIN PAN
REINSTALLED
HERE
———— DRAIN PLUGS ————
REINSTALLED HERE
COIL SHOWN IN UPFLOW POSITION FOR EASY CONVERSION
TOP
CAP
90º
BEND
Figure 27. Field Modification for Left-Hand Air
Discharge
Figure 28. Left-Hand Discharge Configuration
9. Knock out drain seal plate from access door. Secure
plate to cabinet front flange with screw provided.
10. Flip access door and replace it on the unit.
11. Set unit so that it is sloped 1/4 inch toward the drain pan
end of the unit. Connect return and supply air plenums
as required using sheet metal screws.
12. If suspending the unit, it must be supported along the
entire length of the cabinet. If using chain or strap, use a
piece of angle iron or sheet metal attached to the unit
(either above or below) so that the full length of the
TOP CAP ROTATED TO CORRECT
POSITION
TOP CAP SCREWS
DRAIN PAN
SHIPPING
LOCATION
REMOVED FROM HERE
ALIGN HOLES
WITH HOLES
IN COIL END
PLATE.
BACK COIL
END SEAL