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Part No: CRECOMZR072A01 and CRECOMZR073A01
CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . 1
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Vertical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Horizontal Installation . . . . . . . . . . . . . . . . . . . . . . . . . 7
Barometric Hood Assembly . . . . . . . . . . . . . . . . . . . . 8
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
• DIFFERENTIAL ENTHALPY CONTROL REQUIRES
Power Exhaust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Demand Controlled Ventilation . . . . . . . . . . . . . . . . 13
Fire and Smoke Control . . . . . . . . . . . . . . . . . . . . . . 13
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Control and a Thermostat . . . . . . . . . . . . . . . . . . 14
Control and a Thermostat . . . . . . . . . . . . . . . . . . 16
PremierLink Control and a Room Sensor . . . . . . 16
Heating Unit with EconoMi$er2, PremierLink Control
and a Room Sensor . . . . . . . . . . . . . . . . . . . . . . . 17
SAFETY CONSIDERATIONS
Installation of this accessory can be hazardous due to system
pressures, electrical components, and equipment location (such as
a roof or elevated structure). Only trained, qualified installers and
service technicians should install, start-up, and service this
equipment.
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53480313-01
Vertical and Horizontal EconoMi$er
Installation Instructions
Page
Printed in U.S.A.
Form IIK-CRECOMZR72-03
Medium Rooftop Units
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.
WARNING
Electrical shock can cause personal injury and death. Shut off
all power to this equipment during installation. There may be
more than one disconnect switch. Tag all disconnect locations
to alert others not to restore power until work is completed.
CAUTION
PERSONAL INJURY HAZARD
Failure to follow this caution can result in personal injury and
damage to the unit.
Cover the duct opening as a precaution so objects cannot fall
into the return duct opening. Be sure to remove the cover when
installation is complete.
GENERAL
IMPORTANT: Read these instructions completely before
attempting to install the accessory economizer.
The EconoMi$er
2 accessories, with 4 to 20 mA actuator signal
®
control, do not have a built-in controller. The economizer actuator
is operated by a 4 to 20 mA signal from an existing field-supplied
controller (such as PremierLink™ control). A 12-pin plug is
provided for connection to the control.
Refer to the specific DDC (Direct Digital Controls) literature for
how to indicate
economizer alarm/errors in the building space.
Alarm/error indication may be required for local regulation
compliance.
Pg 1
2 Accessory
®
15 to 27.5 Tons
8-21 Replaces: IIK-CRECOMZR72-02
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Table of Contents
Related Manuals for Carrier EconoMiser 2
Summary of Contents for Carrier EconoMiser 2
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Page 1: Table Of Contents
Medium Rooftop Units Vertical and Horizontal EconoMi$er 2 Accessory ® 15 to 27.5 Tons Installation Instructions Part No: CRECOMZR072A01 and CRECOMZR073A01 When installing this accessory, observe precautions in the CONTENTS literature, labels attached to the equipment, and any other safety Page precautions that apply: SAFETY CONSIDERATIONS . -
Page 2: Compliance
The power exhaust set point is adjustable at the EconoMi$er 2 Side Replacement Panel controller. (for horizontal only) To see which economizer is used on specific Carrier, Bryant, or Filter Supports ICP models see Tables 1-3. See Table 4 for package contents and Central Retainer Table 5 for PremierLink controller sensor usage. -
Page 3: Installation
Table 5 — PremierLink™ Controller Sensor Usage DESIRED CONTROL FIELD-INSTALLED DRY BULB FACTORY-INSTALLED DRY BULB FACTORY-INSTALLED ENTHALPY METHOD ACCESSORY EconoMi$er SENSOR EconoMi$er SENSOR EconoMi$er ® ® ® SINGLE DRY BULB NONE: Outside air dry bulb sensor is NONE: Outside air dry bulb sensor is TEMPERATURE factory-installed factory-installed... - Page 4 To Optional Enthalpy Sensor PL-6 PINK 500-OHM Resistor Outside Air Sensor Actuator Fig. 4 — Wiring Diagram Units Left Side Panel Economizer Shroud Harness/Plug From HVAC Jumper Plug Economizer Screw Flange (Remove) Left Front Corner Post Harness/Plug Fig. 5 — Top View From Economizer Fig.
- Page 5 NOTE: The 12-pin jumper plug should be saved for future use in g. Secure side retainers (Item #6) to side panels (Item #4 the event that the EconoMi$er 2 is removed from the unit. The and #5) using the screws provided, screwing from the ®...
- Page 6 Apply seal strip to the back of this flange Apply seal strip to the back Apply seal strip of this flange to the back of this flange Apply seal strip to the front of this flange ITEM # DESCRIPTION Filter Support Central Retainer Side Retainer Hood Top...
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Page 7: Horizontal Installation
Install economizer with shroud attached, as shown in Fig. 3, Horizontal Installation into the return air section of the unit. Be careful not to pinch These economizers are designed to work in both vertical and the wires during installation. Bottom of economizer will rest horizontal applications. -
Page 8: Barometric Hood Assembly
12. Install the hood assembly onto the unit (see Fig. 9-11). 13. If barometric relief is required, remove the relief damper and hinges from the (provided) bottom panel used on vertical applications. Reinstall the hinges and damper on the side of the field-supplied return duct. -
Page 9: Accessories
Accessories SUPPLY AIR TEMPERATURE SENSOR (SAT) Unit Outside When the unit is supplied with a factory-mounted PremierLink™ Air Hood control, the supply air temperature (SAT) sensor (33ZCENSAT) is factory supplied and wired. The wiring is routed from the Premier- Link control over the control box, through a grommet, into the fan section, down along the back side of the fan, and along the fan deck over to the supply-air opening. - Page 10 NOTE: If PremierLink™ controller is grounded and actua- tor is grounded on common side, then common wire from PremierLink controller J9-2 is not needed. Fig. 23 — PremierLink™ Controller Wiring — Enthalpy Control (HH57AC077) TSTAT CONTROL PremierLink Control PL1-5 PL1-6 IAQI ENTH SWITCH...
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Page 11: Return Air Enthalpy Sensor (Hh57Ac078)
Connect the RED/GRAY wire to J4-1 on PremierLink SENSOR) controller and to terminal 2 on enthalpy sensor. NOTE: If installing in a Carrier rooftop, use the two gray wires (RETURN AIR ENTHALPY provided from the control section to the economizer to connect SENSOR) PremierLink controller to terminals 2 and 3 on enthalpy sensor. -
Page 12: Outdoor Enthalpy Control Requires Only An Enthalpy Switch/Receiver (33Csenthsw)
4-20 24-36 mA in VDC out ENTHALPY Carrier recommends the use of 18 or 22 AWG (American Wire Gage) twisted pair or shielded cable for all wiring. All connections must be made with 1/4 in. female spade connectors. ® A 24 vac transformer is required to power the enthalpy switch/receiver. -
Page 13: Power Exhaust
Connect the 24-36 VDC OUT terminal on the enthalpy switch/ and equipment that cannot exceed the required ventilation rate at receiver to the 24-36 VDC IN terminal on the return air enthalpy design conditions. Exceeding the required ventilation rate means sensor. -
Page 14: Start-Up
24 VAC SECONDARY 24 vac output from n/c contact when the outdoor enthalpy is less than the indoor enthalpy (Enable economizer) 24 vac output from n/c contact when the Indoor enthalpy is greater than the outdoor enthalpy (Enable energy$recycler 4-20 24-36 HI LOW GND 24 24-36 4-20... - Page 15 Table 6 — Start-Up Procedures EconoMi$er2 EconoMi$er2 STEP PROCEDURE EXPECTED RESPONSE RESPONDS CORRECTLY RESPONDS INCORRECTLY No response at all Step 2 Remove power to reset actuator. Actuator will move to its Actuator operates properly Operation is reversed Re-apply power. “Control Signal” position Step 8 Step 3 Apply control signal to actuator...
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Page 16: Routine 2 (Dxctlo < Oat < 68°F)
ROUTINE 2 (DXCTLO < OAT < 68°F) The PremierLink controller will use the following information to determine if free cooling is available: • If only Y1 energized, the economizer maintains a • Indoor fan has been on for at least 30 seconds. SASP = (SATLO1 + 3) •... -
Page 17: And A Room Sensor
If an optional power exhaust is installed, as the outdoor air damper Staging should be as follows: opens and closes, the power exhaust fans will be energized and IF HEATING PID STAGES=2 deenergized. • HEAT STAGES=1 (50% capacity) will energize HS1 If field-installed accessory CO sensors are connected to the PremierLink control, a PID-controlled demand ventilation strate-... - Page 20 © 2021 Carrier Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53480313-01 Printed in U.S.A. Form IIK-CRECOMZR72-03 Pg 20 8-21 Replaces: IIK-CRECOMZR72-02...
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