Carrier CRECOMZR074A01 Installation Instructions Manual page 4

Units Left
Side Panel
Left Front
Corner Post
Fig. 5 — Top View
7. Insert provided screw through the bottom left rear of the
economizer and into the unit base. (See Fig. 5 and 6.)
Reinstall the unit's left side panel.
Economizer Outside
Air Damper
Insert
Screw
Left Front
Corner Post
Insert
Screw
Fig. 6 — Front Left View
8. Before the economizer is secured in place on the right hand
side, remove and save the 12-pin jumper plug from the unit
wiring harness. Insert the economizer plug into the unit wir-
ing harness plug. (See Fig. 7.)
NOTE: The 12-pin jumper plug should be saved for future
use in the event that the EconoMi$er X system is removed
from the unit. The jumper plug is not needed as long as the
EconoMi$er X system is installed.
Harness/Plug
From Economizer
Fig. 7 — Harness and Jumper Plug
Economizer Shroud
Economizer
Screw Flange
Harness/Plug
From HVAC
Jumper Plug
(Remove)
9. Install the bottom panel with the relief damper attached on the
unit. (See Fig. 8.) Screw the panel in place.
NOTE: Remove the bottom screw holding the relief blade
closed.
NOTE: Access to the economizer actuator is through the
HVAC unit's left side panel.
EconoMi$er X
Economizer
Actuator
Fig. 8 — Bottom Panel Installation
10. Install the upper end economizer panel over the economizer's
outside air damper, and above the bottom panel. Screw panel
in place and screw panel into economizer in two places. (See
Fig. 9.)
Provided
Upper Panel
Economizer
Outside Air
Damper
Provided
Bottom Panel
With Relief
Fig. 9 — End View of Unit
11. Locate the mixed (supply) air temperature sensor
(HH79AH001) in the economizer hardware bag. A 2-wire
sensor harness with spade terminals is supplied with the
sensor. Plug the harness into the top of the HH79AH001
sensor. See Fig. 10 for sensor image. Mount the sensor in the
indoor fan section of the unit. (See Fig. 11.) Locate the orange
and brown wires in the wire bundle in the indoor fan section.
Connect these orange and brown wires to the 2-wire harness
attached to the HH79AH001 sensor. Mixed air default setting
is 53°F and can be adjusted from 38° to 70°F.
H H 7 9 A H 0 0 1
Fig. 10 — Dry Bulb and Mixed Air Sensor —
4
Upper
Economizer
Shroud
Panel
r
p e
a m
f D
l i e Bottom Panel
R e
With Relief
Damper
Remove Shipping
Screw
Insert two (2) screws through the
panel and into the economizer
Remove
Relief Damper
Shipping
Screw
HH79AH001