Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53480393-01
Printed in U.S.A.
Form IIK-CRECOMZR87-01
Pg 1
3-22
Replaces: NEW
Installation Instructions
Part No. CRECOMZR087A00
* The EconoMi$er2 assembly does not include an economizer controller.
SAFETY CONSIDERATIONS
Installation of this accessory can be hazardous due to system
pressures, electrical components, and equipment location (such as
a roof or elevated structure). Only trained, qualified installers and
service technicians should install, start-up, and service this
equipment.
When installing this accessory, observe precautions in the
literature, labels attached to the equipment, and any other safety
precautions that apply:
•
Follow all safety codes
•
Wear safety glasses and work gloves
•
Use care in handling and installing this accessory
It is important to recognize safety information. This is the safety-
alert symbol:
. When you see this symbol on the unit and in
instructions or manuals, be alert to the potential for personal
injury.
Understand the signal words DANGER, WARNING,
CAUTION, and NOTE. These words are used with the safety-
alert symbol. DANGER identifies the most serious hazards which
will
result in severe personal injury or death. WARNING signifies
hazards which
could
result in personal injury or death. CAUTION
is used to identify unsafe practices, which
may
result in minor
personal injury or product and property damage. NOTE is used to
highlight suggestions which
will
result in enhanced installation,
reliability, or operation.
GENERAL
The EconoMi$er2 system utilizes the latest technology available
for integrating the use of free cooling with mechanical cooling for
rooftop units.
This system utilizes gear-drive technology with a direct mount
spring return actuator that will close upon loss of power. The
EconoMi$er2 system comes standard with an outdoor air
temperature sensor. Field-installed CO
2
sensors are available.
Separate barometric relief dampers provide natural building
pressurization control. An optional power exhaust system is
available for applications requiring even greater exhaust
capabilities.
EconoMi$er2 accessories require a 4 to 20 mA actuator signal
control. These accessories do not include a controller. The
EconoMi$er2 actuator is operated by a 4 to 20 mA signal from an
existing field-supplied DDC controller. See Table 1 for package
contents and Fig. 1 for EconoMi$er2 component locations. See
Table 2 for accessories list and Table 3 for sensor usage.
ACCESSORIES AND COMPLIANCE
Accessories List
The EconoMi$er2 system has several field-installed accessories
available to optimize performance. Refer to Table 2 for authorized
parts and power exhaust descriptions.
Table 1 — Package Contents
PART NUMBER
QTY
CONTENTS
CRECOMZR087A00
1
Hood Assembly
1
Filter Access Door
1
Aluminum Filter
18
Screws
1
EconoMi$er2 Assembly*
1
Barometric Relief Hood
Assembly
1
Hood O/A Panel
1
O/A Panel Access Door
1
O/A Small Blank Off
1
O/A Large Blank Off
1
R/A Small Blank Off
1
R/A Large Blank Off
IMPORTANT: Read these instructions completely before
attempting to install the horizontal EconoMi$er2 accessory.
WARNING
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could cause personal injury and/
or death.
Disconnect power supply and install lockout tag before
attempting to install the accessory.
Table 2 — EconoMi$er2 Field-Installed Accessories
PART NUMBER
DESCRIPTION
CRPWREXH028A01
Small And Large Cabinet Power
Exhaust 208-230v 1Ph
CRPWREXH029A01
Small And Large Cabinet Power
Exhaust 460-v 3Ph
33ZCT55SPT
Return Air Dry Bulb
CRHUMDSN001B00
or
33CSENTHSW
Outdoor Air Enthalpy Sensor
CRHUMDSN001B00
or
33CSENTSEN
Return Air Enthalpy Sensor
33ZCSENCO2
CO
2
Room Sensor
33ZCASPCO2
Aspirator Box For Duct Mount
CO
2
Sensor
33ZCT55CO2
Space Temperature And CO
2
Room Sensor With Override
33CZT56CO2
Space Temperature And CO
2
Room Sensor With Override
And Setpoint
Small Rooftop Units
Accessory Horizontal Ultra-Low Leak
EconoMi$er2
7-1/2 to 12-1/2 Tons
Summary of Contents for EconoMiser2 CRECOMZR087A00
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