Perfect Aire PATWH14002 - Manual (Page 22)

Direct Unit Mounting
The previous directions are the preferable way to mount the new rear grille. The unit’s performance is slightly
better and the possibility of drafts is reduced. As a last resort, direct mounting of the grille to the unit can
be considered.
Note: The grille must be installed prior to inserting the unit into the sleeve.
1. Attach the 2 seal pieces (1” x 3
/
8
” x 14”) as shown in Fig. 1.
2. Position the grille over the rear of the unit making sure that:
a. The double set of screw holes are at the bottom.
b. The fins of the grille are pointed away from the unit.
3. Align the top of the grille with the top of the unit and ensure that the overhang on each side is equal.
4. If the unit had not been pre-drilled (some models), carefully drill 4- 1
/
8
” holes through the grille and into
the side flange of the unit approximately 1½” to 2” from the top and bottom as in Fig. 2 and Fig. 3.
(Be careful not to drill into copper heat exchanger coils).
5. Install 4- #8 self tapping screws to affix the grille to the unit.
6. Insert the unit into the sleeve.
Seal Seal
Fig. 1
Fig. 2
Fig. 3
Grille Screws
Location
1/8” Hole
Grille &
Flange
#8 Screw
INSTALLATION INSTRUCTIONS (CONTINUED)
21