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23. Check all wiring for safety then reapply power to the
unit. Verify correct operation and setting of the
accessory(s) per the Configuration and Operations
sections of the instruction.
24. Install access door next to hood. Screw bottom of
door to HVAC unit. See Fig. 23. Use standard serrated
screws along bottom of panel for all units.
25. Replace the indoor fan motor access panel.
26. Install the hood filter by opening the filter clips,
which are located underneath the hood top. Insert the
aluminum filter into the bottom filter rack (hood
divider). Push the filter into position past the open
filter clips. Close the filter clips to lock the filter into
place. See Fig. 23 and 24.
Front Blank-Off Panel
Horizontal
Blank-Off
Fig. 27 - Horizontal Return Opening Blank- Off Panel
INSTALLATION - VERTICAL
1. Turn off unit power supply(s) and install lockout tag.
2. Remove the existing unit filter access panel. Raise the
panel and swing the bottom outward. The panel is
now disengaged from the track and can be removed
and discarded. See Fig. 29.
WARNING
!
ELECTRIC SHOCK HAZARD
Failure to follow this warning could result in
personal injury or death.
Disconnect power supply and install lockout tag
before attempting to install accessory.
3. Remove the indoor coil access panel and discard. See
Fig. 30.
4. The EconoMi$er X hood assembly is shipped
assembled. Aluminum filter must be installed on
some models.
5. Set the EconoMi$er X upright. See Fig. 30.
6. Insert the EconoMi$er X assembly into the rooftop
unit positioning the EconoMi$er on the bottom left of
the opening.
7. Secure the EconoMi$er X mounting flanges to the
unit with the screws provided. See Fig. 30.
Follow the instructions for the horizontal economizer
from step 10 onwards.
HH79ZZ007
Outside Air
Temperature
Sensor
EconoMi$er X
Hood
Fig. 29 - Typical Outdoor Air Section Access Panel
Unit Filter
Rack
Unit Base
18
Wiring
Harness
Actuator
(Hidden)
Fig. 28 - Vertical EconoMi$er X Component
Locations
Filter Access Panel
Locations
Wiring
Harness
EconoMi$er X
Fig. 30 - EconoMi$er X Installed in HVAC Unit
EconoMi$er X
Hold Down Tab
EconoMi$er IV Rear Flange
Fig. 31 - Top View of Vertical EconoMi$er X
Installation
HH57AC081
Enthalpy Accessory
Location (Field
Installed)
Outdoor-Air Opening and
Indoor Coil Access Panel
HVAC Unit Filters
Insert
Screw in
EconoMi$er X
Flanges
EconoMi$er X
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