6
HORIZONTAL ECONOMI$ER INSTALLATION
(CRECOMZR006A01, 007A01)
To remove the filter access panel, raise the panel and swing
the bottom outward. The panel is now disengaged from the
track and can be removed.
1. Remove the outdoor air opening access panel and dis-
card. See Fig. 16.
2. Remove the factory-installed horizontal return air
(RA) duct cover, and place it foil side up over the ver-
tical RA duct opening in the base pan of the unit. See
Fig. 17.
3. Clip off both wire ties on the rooftop wiring harness,
and slide the EconoMi$er assembly into the rooftop.
See Fig. 18.
4. Proceed to Step 6 for a 3 to 6 ton unit.
5. For a 7
1
/
2
to 12
1
/
2
ton unit, install the RA block-off
plate and side seal bracket. Secure the bracket with the
fastener clips. See Fig. 19.
For a 10
1
/
2
to 12
1
/
2
ton unit, install the RA top filler
plate. (Discard the top filler plate for any other size
unit.)
6. Install the outdoor air (OA) block-off plate. See
Fig. 18.
7. Secure the EconoMi$er to the unit with the screws pro-
vided. See Fig. 18 and 19.
8. Remove and save the jumper plug (blue/yellow wire)
from the unit wiring harness located in the upper left
corner, and insert the EconoMi$er plug into the unit
wiring harness.
9. Remove the shipping tape from the barometric relief
dampers and ensure the dampers move freely. See
Fig. 18.
10. Remove the indoor fan motor access panel (see
Fig. 14).
11. Mount the Supply Air (SA) temperature sensor to the
lower left portion of the indoor blower housing with
the screws provided. See Fig. 15.
12. Connect the violet and pink wires to the corresponding
connections on the Supply Air (SA) temperature sen-
sor. Replace the indoor fan motor access panel.
13. Proceed to the Standard Hood section to install a
standard hood, or to the Power Exhaust Hood section
for a power exhaust hood.
FILTER ACCESS
PANEL
OUTDOOR
AIR OPENING
ACCESS PANEL
FACTORY-
INSTALLED
HORIZONTAL RA
DUCT COVER
BLOWER
FILTER
VERTICAL RA
DUCT
OPENING
SHIPPING
TAPE
OUTDOOR AIR
BLOCK-OFF
PLATE
Fig. 16 — Outdoor Air Opening
Access Panel Location
Fig. 17 — Return Air Duct Cover Installation
NOTE: The OA block-off plate is located on the left side of a 7
1
/
2
to
12
1
/
2
ton unit.
Fig. 18 — Horizontal EconoMi$er Installed
in a 3 to 6 Ton Unit
HOLES TO SECURE
ROOFTOP WIRING HARNESS
(WIRE TIE NOT INCLUDED)
SIDE SEAL
BRACKET
FOUR
FASTENER
CLIPS
SIDE SEAL
BRACKET
RETURN AIR
TOP FILLER PLATE
(FOR 10-1/2 AND 12-1/2 TON
UNITS ONLY)
RETURN AIR
BLOCK-OFF
PLATE
Fig. 19 — Horizontal EconoMi$er Installed in a 7
1
/
2
to 12
1
/
2
Ton Unit
