Titus HAB Horizontal Air Handler Belt Drive - Manual (Page 6)

HAB Installation Manual
IOM-HAB-00 06-30-04
Installation
1. Remove grille from plenum, retain screws for reattaching
grille later.
2. Position plenum with unit front.
3. Align the ½-inch holes in the plenum with the unit’s
protruding screw heads.
4. Align the smaller ¼-inch holes in plenum and unit together.
5. Reach through the grille opening to the unit and insert the
screws.
6. Tighten all screws to secure plenum.
7. Reinsert grille in plenum opening and secure with screws
retained previously.
8. Adjust grille louvers manually.
Figure 11. Grille Plenum Installation
Mixing Box Installation
Preparation
Inspect desired installation location and determine if space
provides sufficient work and safety clearances. If space
allows, make all sheet metal connections and attachments
prior to moving complete assembly to duct connection site.
Figure 12 and Table 3 provide unit, mixing box, and
damper dimensional information.
1. One side of mixing box has two plastic plugs. These
plugs may be removed and replaced to the opposite
end to seal the unused 7/8-inch holes at the
opposite cabinet end where the 5/16-inch linkage
rods do not extend outward.
2. Choose side of cabinet most accessible for servicing
to mount damper motor. Remove bolt for each
damper shaft and extend shaft until second hole in
shaft aligns with hole in damper blade. Insert bolt.
3. Connect two shafts with the two crank arms and the
5/16-inch linkage rod (furnished with mixing box).
Note: Blades and crank arms are to operate in
parallel.
4. Mount damper motor on the selected side of mixing
box cabinet by drilling necessary holes and securing
with screws or nuts and bolts.
Installation
1. Attach mixing box to unit return-air duct flange.
Vertical duct flange connections at unit rear
are pre-punched to match pre-punched holes
in mixing box. Mixing box may be mounted for
top-rear or bottom-rear connection.
2. After bolting vertical flange, drill holes in
horizontal duct flanges. Secure flanges with
screws or nuts and bolts.
3. Use field-supplied hardware to connect motor
shaft to one of the damper shafts.
4. Connect duct to the 1-inch duct flange
provided on mixing box for return and fresh air
makeup as required.
Note: Steps 1, 2, and 3 may follow steps
1 and 2 in Preparation.
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