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APPLICATION
DRY BULB TEMPERATURE
DIFFERENTIAL DRY BULB
TEMPERATURE
SINGLE ENTHALPY
DIFFERENTIAL ENTHALPY
NOTES:
CO
Sensors (Optional):
2
1. 33ZCSENCO2- Room sensor (adjustable). Aspirator box is required for duct mounting of the sensor.
2. 33ZCASPCO2- Aspirator box used for duct-mounted CO
3. 33ZCT55CO2- Space temperature and CO
4. 33ZCT56CO2- Space temperature and CO
INSTALLATION
1.
Turn off unit power supply(s) and install lockout tag.
WARNING
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could cause personal injury and/
or death.
Disconnect power supply and install lockout tag before
attempting to install the accessory.
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. 2.)
3.
Remove the indoor coil access panel and discard. (See
Fig. 2.)
4.
The EconoMi$er2 hood assembly is shipped assembled. Alu-
minum filter must be installed on some models. See Step 15
on page 3.
5.
Slide the EconoMi$er2 assembly into the rooftop unit. (See
Fig. 3.)
6.
Slide the EconoMi$er2 assembly all the way back and into
the horizontal R/A opening. (See Fig. 3.)
7.
Attach O/A (Outside-air) sensor panel over the panel open-
ing, then lift the economizer. Match the ID (inside dimension)
of the panel with the ID of the economizer, then attach using
provided screws. (See Fig. 4.)
8.
Remove and save the 12-pin jumper plug from the unit wir-
ing harness (located in the upper left corner of the unit). Insert
the EconoMiSer2 plug into the unit wiring harness. (See
Fig. 5.) Refer to page 5 for wiring diagram.
NOTE: The 12-pin jumper plug should be saved for future use, in
the event that the EconoMiSer2 assembly is removed from the
unit. The jumper plug is not needed as long as the EconoMiSer2
assembly is installed.
Table 3 — Sensor Usage
OUTDOOR AIR
TEMPERATURE SENSOR
Included
HH79NZ039
Included
HH79NZ039
Included
Not Used
Included
Not Used
room sensor.
2
room with override.
2
room sensor with override and setpoint.
2
RETURN AIR
OUTDOOR AIR
TEMPERATURE
ENTHALPY SENSOR
SENSOR
—
Required
33ZCT55SPT
CRHUMDSN001B00
—
33CSENTHSW
CRHUMDSN001B00
—
33CSENTHSW
HH79NZ039
Outside Air
Temperature
Sensor
Fig. 1 — EconoMi$er2 Component Locations
2
RETURN AIR
ENTHALPY SENSOR
—
—
—
—
Required
—
or
Required
Required
CRHUMDSN001B00
or
or
33CSENTSEN
Actuator
Outside Air
Dampers (Blades)
Wiring
Harness
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