3
6. For 3 to 6 ton units, proceed to Step 7. For 7
1
/
2
to
12
1
/
2
ton units, install the return air block-off plate
over the return air duct opening. See Fig. 7.
7. Slide the EconoMi$er assembly into the rooftop unit.
See Fig. 8-10.
NOTE: Be sure to engage rear EconoMi$er flange under tabs in
return air opening of the unit base. See Fig. 8.
8. Install the outdoor air block-off plate, then secure the
EconoMi$er with the screws provided. See Fig. 9
and 10.
9. Remove and save the 12-pin jumper plug from the unit
wiring harness located in the upper left corner and
insert the EconoMi$er plug into the unit wiring har-
ness. Refer to wiring diagram Fig. 11 and 12. Also
refer to Fig. 13 if installing an accessory power
exhaust.
10. Install the complete hood assembly on the unit and
secure using the screws provided.
11. Remove the indoor fan motor access panel. See
Fig. 14.
12. Mount the supply air temperature sensor to the lower
left portion of the indoor blower housing with the two
(2) screws provided (see Fig. 15). Connect the violet
and pink wires to the corresponding connections on the
supply air temperature sensor. Replace the indoor fan
motor access panel.
SEAL STRIP
SEAL STRIP
OUTDOOR AIR
HOOD TOP
SCREEN
RETAINER
OUTDOOR AIR
INLET
SCREENS
OUTDOOR AIR
HOOD SIDES
ASSEMBLED
EXHAUST HOOD
OUTDOOR AIR
OPENING
PANEL
Fig. 5 — Outdoor Air Hood Assembly
(Vertical EconoMi$er)
Fig. 6 — Completed Hood Assembly
(Vertical EconoMi$er)
WIRING
HARNESS
OUTDOOR
AIR
BLOCK-OFF
PLATE
WIRING HARNESS
OUTDOOR AIR
BLOCK-OFF PLATE
ECONOMI$ER
ECONOMI$ER REAR
FLANGE
UNIT BASE
UNIT FILTER
RACK
ECONOMI$ER CLIP
HVAC UNIT
Fig. 8 — Rear Vertical EconoMi$er Flange
Installation
Fig. 9 — Vertical EconoMi$er Installed in
3 to 6 Ton Unit
Fig. 10 — Vertical EconoMi$er Installed in
7
1
/
2
to 12
1
/
2
Ton Unit
BLOWER
FILTER
RETURN AIR
BLOCK-OFF
PLATE
OUTDOOR AIR
BLOCK-OFF PLATE
ECONOMI$ER
Fig. 7 — Return Air Block-Off Plate Installation
(7
1
/
2
to 12
1
/
2
Ton Units Only)
