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17
Return Air Box & Duct Installation
Remove the return air grill from the return air box and
remove the air filter from the return air grill.
Insert the return box from below for ceiling installation
(or from the front for wall installations) and fasten with
four screws through holes provided on the long side of
the box. (see Figure 2.24).
Remove the grill and the filter from the grill frame. Insert
the frame into the box and mount in place with the
screws provided through a hole at each corner of the
frame. Finally, place the air filter into the frame and
replace the grill. Turn the latches a quarter turn to lock
the grille in place. Slide a clamp band (provided with
return air box) over one end of the return air duct. Place
that end over the elliptical flange on the fan coil unit (see
Figure 2.25). Move the clamp over the flange and tight-
en so the clamp holds the return air duct securely to the
flange.
Follow the same procedures to attach the return air duct
to the return air box (see Figure 2.25).
FIGURE 2.25: TYPICAL CLOSET/UTILITY ROOM
INSTALLATION
ROOM
TERMINATOR
WINTER
SUPPLY
SHUT-OFF
FIGURE 2.27: WINTER SUPPLY SHUT-OFF
FIGURE 2.24: RETURN AIR BOx INSTALLATION
Direct Mount Filter Box
& Ductless Returns
Center filter box over the eliptical flange of fan coil unit
(see Figure 2.26). Mark the (4) hole locations on fan coil
unit and drill holes using 5/32" bit. Mount filter box to unit
using screws provided and insert air filter.
Winter Supply Shut-Off Installation
Simply insert winter supply shut-offs into the room
terminator openings (see Figure 2.27). Wrap the return
air filter in a plastic bag and reinstall it to block the return
air opening. Winter supply shut-offs prevent moisture
from collecting in ductwork during winter months. Be
sure to remove the plastic bag and all winter supply
shut-offs before operating the system
FIGURE 2.26: FILTER BOx INSTALLATION
AIR OUT
AIR
IN
Summary of Contents for WCSP-2430JV
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