Titus MAB IOM - Manual (Page 7)

MAB Installation Manual
IOM-MAB-00 08-15-04
7 of 9
Mixing Box Installation
Preparation 1.
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 9 and Table 6 provide unit, mixing
boxes, and damper dimensional information.
2.
1. One side of mixing box has two plastic plugs. These
plugs may be removed and placed on the opposite
end to seal the unused 7/8-inch holes at the opposite
cabinet end where the 5/6-inch linkage rods do not
extend outward.
3.
4.
2. Choose the cabinet side 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. Connect two shafts with the two crank arms and
the 5/16-inch linkage rod (furnished with mixing box).
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
boxes. Mixing boxes may be mounted for top-rear or
bottom-rear connections.
After bolting vertical flange, drill holes in horizontal
duct flanges. Secure flanges with screws or nuts and
bolts.
Use field-supplied hardware to connect motor shaft
to one of the damper shafts.
Connect duct to the 1-inch duct flange provided on
mixing box for return and fresh air locations as
needed.
Note: Installation steps 1, 2, and 3 may follow
Preparation steps 1 and 2, if preferred.
3. Mount damper motor on the selected side of mixing
box cabinet by drilling necessary holes and securing
with screws or nuts and bolts.
Figure 9. Mixing Box Dimensions
Table 6. Mixing Box Dimensions
Mixing Box Dimensions
Model
A B C D E F
Damper Ship Wgt.
(lbs)
Nominal
CFM SP Loss
MAB16/20 8 25.5 16 8 9.5 36 (2) 34 x 8 75 2000 0.07
MAB30/40 12 32 20 10 10 48 (2) 46 x 12 131 4000 0.03
MAB60/80 14 45 22 15 16 66 (2) 56 x 14 201 8000 0.04
Note: All dimensions in inches.