035-14841-000 Rev. A (0701)
Unitary Products Group 7
All of the hood components, including the filters, the gasket-
ing and the hardware for assembling are located above the
top filter racks within the filter section. The outdoor air sensor
is in the bag of parts located at the bottom of the return air
section.
1. With filter section access panel removed, take out hood
components, filters and sensor described above.
Remove and discard outdoor air opening cover on back
unit (Upper right hand corner).
2. Remove the 1/2" knockout (A) in the units rear panel
(located to the right side of the outdoor air opening).
Insert the two loose wires from inside the unit, into the
1/2" bushing provided. Insert wires and bushing into
knockout. Snap bushing into place.
3. Mount the outdoor air sensor to the rear panel, just
below the knockout described in Step 2. Secure with two
self-drilling screws at dimples (B) provided in the panel.
Note: Sensor must be positioned so that the sensing ports
are at the top (louvers pointing downward) and ter-
minal connections to the right.
4. Connect the two wires, indicated in Step 2, to the sensor
as follows:
• Wire #73 to terminal (+)
• Wire #74 to terminal (S)
5. Assemble the LH and RH side plates to the top cover (2
screws each side) to form the hood. Apply gasketing to
the flange surface on each side plate. Extend gasketing
1/4" beyond top and bottom of each flange to insure
adequate corner sealing. Secure this assembly to the
unit back panel (upper right hand corner). First, remove
screw (C) on unit top cover. Then slip flange of hood
cover in under flange of unit top cover, replace screw
(C), engaging hole (E) in hood flange and tighten. Attach
the two side plates to the unit panel by using two self-
drilling screws for each side plate at dimples (D) pro-
vided in the panel.
6. Position fillpiece at bottom of hood, between the two side
plates but do not secure at this time. (Slotted openings
MUST be downward for drainage). After fillpiece is prop-
erly positioned, note where contact is made with the unit
panel.
Remove fillpiece and apply gasket material to this area
to provide a seal. Reposition fillpiece and secure with 2
screws.
7. Install the two filters into the hood assembly, sliding
down along retainers on side plates, into fillpiece at bot-
tom of hood.
NOTE: Install filters so that “Air Flow” arrows point toward
the unit.
FIGURE 3 : ECOMONIZER RAIN HOOD ASSEMBLY (OPTION)
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