Carrier CRECOMZR022A01 User manual

1
Installation Instructions
CONTENTS
PACKAGE CONTENTS . . . . . . . . . . . . . . . . . . . . . .1
PACKAGE USAGE . . . . . . . . . . . . . . . . . . . . . . . . . 1
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . 1
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
SENSOR USAGE . . . . . . . . . . . . . . . . . . . . . . . . . . 2
ACCESSORIES LIST . . . . . . . . . . . . . . . . . . . . . . . 3
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . .3-5
WIRING DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . .5-9
SAFETY CONSIDERATIONS
Installation and servicing of air-conditioning equipment can be
hazardous due to system pressure and electrical components. Only
trained and qualied service personnel should install, repair, or service
air-conditioning equipment.
Untrained personnel can perform the basic maintenance functions of
replacing lters. All other operations should be performed by trained
service personnel. When working on air-conditioning equipment, observe
precautions in the literature, tags, and labels attached to the unit, and
other safety precautions that may apply. Follow all safety codes. Wear
safety glasses and work gloves.
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, and CAUTION.
These words are used with the safety-alert symbol. DANGER identies
the most serious hazards which will result in severe personal injury or
death. WARNING signies a hazard 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 CO2sensors are available.
Standard barometric relief dampers provide natural building pressurization
control. An optional power exhaust system is available for applications
requiring even greater exhaust capabilities.
EconoMi$er2 accessories have a 4 to 20 mA actuator signal control.
These accessories do not include the EconoMi$er2 controller. The
EconoMi$er2 actuator is operated by a 4 to 20 mA signal from an existing
eld-supplied controller (such as PremierLinkTM controller). See Table
3 for sensor usage.
WARNING
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could cause personal injury and/or
death.
Disconnect power supply and install lockout tag before attempting to
install the accessory.
!
Table 2 - Package Usage
Table 1 - Package Contents
UNIT SIZE PART NUMBER
Small Cabinet,
Footprint size: 46 3/4” x 74 3/8” CRECOMZR022A01
Large Cabinet,
Footprint size: 58 1/2” x 88 1/8” CRECOMZR023A01
Extra-Large Cabinet,
Footprint size: 63 3/8” x 115 7/8” CRECOMZR063A00
PACKAGE NO. QTY CONTENTS
CRECOMZR022A01,
CRECOMZR023A01
1
1
1
18
1
1
Hood Top and Sides
Hood Divider
Aluminum Filter
Screws
EconoMi$er2 Assembly
Supply Air Temperature Sensor
CRECOMZR063A00
1
1
1
2
1
1
1
Hood Top and Sides
Hood Divider
Hood Filter Divider
Aluminum Filters
Hardware Bag
EconoMi$er2 Assembly
Supply Air Temp Sensor
Small Rooftop Units
Accessory Vertical EconoMi$er2
2 to 12 1/2 Tons
CRECOMZR022A01
CRECOMZR023A01
CRECOMZR063A00
!
IMPORTANT: Read these instructions completely before attempting to
install the Vertical EconoMi$er2 Accessory.

2
Table 3 - Sensor Usage
APPLICATION OUTDOOR AIR
TEMPERATURE SENSOR
RETURN AIR
TEMPERATURE SENSOR
OUTDOOR AIR
ENTHALPY SENSOR
RETURN AIR
ENTHALPY SENSOR
Dry Bulb Temperature
with PremierLinkTM†
(PremierLink requires
4 to 20 mA actuator)
Included
HH79NZ039 — — —
Differential Dry Bulb
Temperature with
PremierLink†
(PremierLink requires
4 to 20 mA actuator)
Included
HH79NZ039
Required —
33ZCT55SPT — —
Single Enthalpy with
PremierLink†
(PremierLink requires
4 to 20 mA actuator)
Included
Not Used —Required — HH57AC077 —
Differential Enthalpy
with PremierLink†
(PremierLink requires
4 to 20 mA actuator)
Included
Not Used —Required — HH57AC077
Required —
HH57AC078
† PremierLink control requires Supply Air Temperature sensor 33ZCSENSAT - Included with factory-installed PremierLink control; eld-supplied and
eld-installed with PremierLink control.
NOTES:
1. CO2Sensors (Optional)
. . 33ZCSENCO2 - Room sensor (adjustable). Aspirator box is required for duct mounting of the sensor.
. . 33ZCASPCO2 - Aspirator box used for duct-mounted CO2 room sensor.
. . 33ZCT55CO2 - Space temperature and CO2 room with override.
. . 33ZCT56CO2 - Space temperature and CO2 room sensor with override and setpoint.
2. All unit include the following standard Sensors:
. . Outdoor-Air Sensor - HH79NZ039
. . Mixed-Air Sensor - (PremierLink control requires Supply Air Temperature sensor 33ZCSENSAT)

3
ACCESSORIES LIST
The EconoMi$er2 has several eld-installed accessories available to
optimize performance. Refer to Table 4 for authorized parts and power
exhaust descriptions
INSTALLATION
Turn off unit power supply(s) and install lockout tag.1.
Remove the existing unit lter access panel. Raise the panel and 2.
swing the bottom outward. The panel is now disengaged from the
track and can be removed. (See Fig. 2.)
Remove the indoor coil access panel and discard. (See Fig. 2.)3.
The box with the EconoMi$er2 hood components is shipped with 4.
the EconoMi$er2. Remove hood from packaging. The hood top and
sides are shipped factory assembled.
NOTE: If the power exhaust accessory is to be installed on the unit,
the hood shipped with the EconoMi$er2 will not be used and may be
discarded. Save the aluminum lter for use in the power exhaust hood
assembly.
5. Insert the hood divider between the hood sides. (See Fig. 3) Secure
hood divider with 2 screws (provided) on each hood side. Screws
should go through the hood sides into the divider. The hood divider
is also used as the bottom lter rack for the aluminum lter. On
hood for extra large cabinet install lter divider. (See Fig. 4.)
6. Slide the EconoMi$er2 assembly into the rooftop unit. (See Fig. 6).
On small and large cabinets be sure to engage the rear EconoMi$er2
ange under the tabs in the return-air opening of the unit base. (See
Fig. 7)
7. Secure the EconoMi$er2 to unit along side and bottom anges using
the screws provided. (See Fig. 6)
8. Remove the tape securing the relief dampers in place.
9. Remove and save the 12-pin jumper plug from the unit wiring
Table 4 - EconoMi$er2 Field-Installed
Accessories
DESCRIPTION PART NUMBER
Small Cabinet Power Exhaust 208-230 v 1 Ph CRPWREXH030A01
Small Cabinet Power Exhaust 460 v 3Ph CRPWREXH021A01
Large Cabinet Power Exhaust 208-230 v 1 Ph CRPWREXH022A01
Large Cabinet Power Exhaust 460 v 3 Ph CRPWREXH023A01
Extra Large Cabinet Power Exhaust 208-230 v 1 Ph CRPWREXH080A00
Extra Large Cabinet Power Exhaust 460 v 3 Ph CRPWREXH081A00
Return Air Dry Bulb 33ZCT55SPT
Outdoor Air Enthalpy Sensor HH57AC077
Return Air Enthalpy Sensor HH57AC078
CO2Room Sensor 33ZCSENCO2
Aspirator Box for Duct Mount
CO2Sensor 33ZCASPCO2
Space Temperature and CO2
Room Sensor with Override 33ZCT55CO2
Space Temperature and CO2Room Sensor
with Override and Set Point 33ZCT56CO2
Fig. 1 - EconoMi$er2 Component Locations —
(2 to 6 Ton Shown)
WARNING
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury and/or
death.
Disconnect power supply and install lockout tag before attempting to
install accessory.
!
EconoMi$er2
Plug
Actuator Gear-Driven
Damper
EconoMi$er2
Dry Bulb
Outside Air
Sensor
Shipping
Tape
Barometric Relief
Dampers
harness (located in the upper left corner of the unit). Insert the
EconoMi$er2 plug into the unit wiring harness. Refer to Fig. 8 for
wiring diagram.
NOTE: The 12-pin jumper plug should be saved for future use, in the
event that the EconoMi$er2 is removed from the unit. The jumper plug is
not needed as long as the EconoMi$er2 is installed.
NOTE: Be sure that the arrow on the actuator motor is pointing to “Run”
and not to “Test.” If the arrow is at “Test,” the Economizer damper will
drive open. (Extra large cabinet only.)
11. While everything is open install and wire any other accessories
and/or sensors as applicable and convenient, per their installation
instructions. Some accessories require that unit ducting already be
installed.
NOTE: If also installing a power exhaust accessory, skip step 12 and
follow the power exhaust instructions instead.
12. Install the EconoMi$er2 hood over the EconoMi$er2. Use screws
provided. (See Fig. 8.)
13. Check all wiring for safety then reapply power to the unit. Verify
correct operation and setting of the accessory(s) per the Conguration
and Operations sections of the instruction.
15. Replace the lter access panel. Slide top of panel into track and lift.
Push bottom of panel into place.
16. Install the economizer hood lter(s) by opening the lter clips which
are located underneath the hood top. Insert the aluminum lter(s)
into the bottom lter rack (hood divider). Push the lter into position
past the open lter clips. Close the lter clips to lock the lter into
place. (See Fig. 5.)

4
Fig. 3 - Hood Assembly
Fig. 2 - Typical Access Panel Locations
Fig. 6 - EconoMi$er2 Installed in HVAC Unit
(2 to 6 Ton Shown)
Fig. 7 - Rear EconoMi$er2 Flange Installation
(Small and Large Cabinet)
Fig. 5 - Filter Installation
Fig. 4 - Hood for Extra Large Cabinet
Hood Top Filter Clip
Outside Air
Cleanable
Aluminum Filter
Barometric
Airow
Hood
Divider
Hood Filter
Divider
AB
CHood Top and
Side Assembly
Compressor
Access Panel
HVAC Unit Filters
Insert
Screw in
EconoMi$er2
Flanges
Wiring
Harness
EconoMi$er2
Controller
Unit Filter
Rack
Unit Base
EconoMi$er2
Hold Down Tab
EconoMi$er2 Rear Flange
EconoMi$er2
EconoMi$er2
Outdoor-Air Opening and
Indoor Coil Access Panel
Filter Access Panel
Hood Divider
D
ECONOMIZER P/N A B C D SHIP WT.
CRECOMZR022A01 33.37” 17.43” 19.05” 29.5” 55 lb
CRECOMZR023A01 40.37” 22.28” 24.48” 36.27” 80lb
CRECOMZR063A00 52.92” 27.03” 33.41” 49.92” 98lb
NOTE: The CRECOMZR063A00 hood has 2 aluminum lters and a
hood lter divider that installs between the lters.

5
4
3
5
2
8
6
7
1
10
11
9
12
PINK
VIOLET
BLACK
BLUE
YELLOW
RUN
-
+
RED
WHITE
RED BLACK
Fig. 9 - EconoMi$er2 Wiring
NOTE 1
Actuator
Assembly
NOTE:
Switch on actuator must be in run position for economizer to operate.
Direct Drive
Actuator
Optional CO2
Sensor 4 - 20 mA
Output
EconoMi$er2
500 OHM
Resistor
Fig. 8 - EconoMi$er2 Hood Installation
Mounting
Screws
EconoMi$er2
Hood Divider
EconoMi$er2
Hood

6
Fig. 10 - EconoMi$er2 Connection to PremierLinkTM Electric Heating/Cooling Controls

7
Fig. 11 - EconoMi$er2 Connection to PremierLinkTM Gas Heat/Electric Cooling Controls

8
Fig. 12 - EconoMi$er2 Connection to RTU-MP Electric Heating/Cooling Controls

9
Fig. 13 - EconoMi$er2 Connection to RTU-MP Gas Heat/Electric Cooling Controls

10
Fig. 14 - Barometric Relief Flow Capacity
Fig. 15 - Return Air Pressure Drop
0
500
1000
1500
2000
2500
0 0.05 0.1 0.15 0.2 0.25 0.3
RELIEF FLOW (CFM)
RETURN DUCT STATIC PRESSURE (in. wg)
Small
Cabinet
Large and
Extra
Large
Cabinet
0
1000
2000
3000
4000
5000
6000
00.1 0.2 0.3 0.4
RETURN AIR FLOW (CFM)
RETURN DUCT STATIC PRESSURE DROP (i n. wg)
Small Cabinet
Large Cabinet
Extra Large Cabinet
Copyright 2010 Carrier Corporation ● 7310 W. Morris St. ● Indianapolis, IN
Manufacturer reserves the right to discontinue, or change at any time, specication or designs without notice and without incurring obligations
Catalog No. IIK-CRECOMZR023-02Printed in U.S.A. Edition Date: 4/10
Replaces: IIK-CRECOMZR023-01