Instruction manual

Issue 1234 507120-01Page 6 of 18
3. Remove coil assembly, bottom drain pan and horizontal
drain pan as one assembly from the air handler.
4. Move the horizontal drain pan to the opposite side of
the coil. Be sure drain holes toward the back of the
unit are plugged. Remove the plugs from the front drain
pan ports.
5. Re-install modified coil/drain pan assembly in air
handler in the same orientation as before (Figures 6
and 7).
Figure 6
Install Main Drain Pan Mounting Bracket
(-18 through -036)
Figure 7
Install both Horizontal & Main Drain Pan Brackets
6. Remove two screws securing the blow-off prevention
bracket. Rotate the brackets 180° and reinstall using
the same screws. See Figure 8.
Figure 8
Blow-Off Prevention Plate