24"
TOP OF UNIT TO BE UNOBSTRUCTED
12"
12"
0"
Transition |
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Duct Screws | 14” | Duct Dimples |
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Figure 3. Minimum Unit Clearances
Installing Return & Supply Air Fittings
The supply and return fi ttings are included with the unit and located in the supply duct. They attach to the unit openings (Figure 4) with a flange and bead arrangement and may be, secured with two sheet metal screws. NOTE: For easier access, install fi ttings before positioning unit in fi nal location.
Return Duct
1.Align the slots with the holes in the collar and install two screws.
2.Position the collar over the opening and align the four notches in the collar with the four dimples in the panel.
3.Using
Supply Duct
1.Position the supply duct collar so the edge of the unit opening fi ts between the fl ange and the bead.
Supply Air Return Air |
Figure 4. Return and Supply Air Fittings
2.Overlap the collar ends keeping the small screw holes underneath.
3.Align the holes in the crimped area and install one screw. NOTE: It may be necessary to loosen the four screws that hold the transition duct in order to install the supply fi tting. Re- tighten when installation is complete.
4.Tap collar (if necessary) to ensure engagement with unit opening and install second screw.
5.Tighten fi rst screw and rotate collar clockwise so joint is near three o’clock position.
Locating & Installing the Return Air Assembly
To simplify installation, locate and install the return air assembly fi rst. If desired, the return opening can be located inside a closet with louvered doors that has an open area equal to or greater than the 12” x 20” grille furnished. The return air grille can be placed in the wall of a closet and the air ducted into the fi lter box through a
Make sure the filter is readily accessible.
SINGLE DUCT APPLICATION | MULTIPLE DUCT APPLICATION |
Figure 5. Typical Duct Applications
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