Table of Contents
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Part No: CRECOMZR101A00, CRECOMZR102A00, CRECOMZR103A00,
CRECOMZR104A00, CRECOMZR105A00, CRECOMZR106A00,
CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . 1
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
ECONOMIZER INSTALLATION . . . . . . . . . . . . . . . . . 4
OUTSIDE AIR ENTHALPY SENSOR . . . . . . . . . . 10
Enthalpy Control Sensor Configuration . . . . . . . . . 10
California's Title 24 High Temperature
Limit Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
ECONOMIZER SETTINGS . . . . . . . . . . . . . . . . . . . . . 14
Interface Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
MOUNTING, INSTALLATION, AND WIRING . . . . . . 20
Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
SETUP AND CONFIGURATION . . . . . . . . . . . . . . . . 24
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Cooling with EconomizerONE System . . . . . . . . . . 29
Heating with EconomizerONE System . . . . . . . . . . 29
APPENDIX A - TROUBLESHOOTING . . . . . . . . . . . 30
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53480416-01
Printed in U.S.A.
Vertical/Horizontal Low Leak/Ultra Low Leak
Installation Instructions
CRECOMZR107A00, CRECOMZR108A00
Page
Form No. IIK-CRECON-SRT-01 Rev. C
EconomizerONE Accessory for
Select 3 to 12.5 Tons
APPENDIX B - SEQUENCE OF OPERATION . . . . .31
APPENDIX C - MODBUS ADDRESSES . . . . . . . . . .34
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.
CAUTION
PERSONAL INJURY HAZARD
Failure to follow this caution may result in personal injury.
Sheet metal parts may have sharp edges or burrs. Use care and
wear appropriate protective clothing, safety glasses and gloves
when handling parts and servicing air conditioning equipment.
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.
Pg 1
Small Rooftop Units
1-24
Replaces: NEW
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Summary of Contents for Carrier CRECOMZR101A00
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Page 1: Table Of Contents
Vertical/Horizontal Low Leak/Ultra Low Leak EconomizerONE Accessory for Small Rooftop Units Select 3 to 12.5 Tons Installation Instructions Part No: CRECOMZR101A00, CRECOMZR102A00, CRECOMZR103A00, CRECOMZR104A00, CRECOMZR105A00, CRECOMZR106A00, CRECOMZR107A00, CRECOMZR108A00 CONTENTS APPENDIX B — SEQUENCE OF OPERATION ..31 APPENDIX C —... -
Page 2: General
Before performing service or maintenance operations on unit, 48GC/50GC/50GCQ 04-06 turn off main power switch to unit and install lock(s) and 582K/559K/547K 04-07 CRECOMZR101A00 (LL), lockout tag(s). Ensure electrical service to rooftop unit agrees CRECOMZR103A00 (ULL) 581K/551K/549K 04-06 with voltage and amperage listed on the unit rating plate. Unit RGV/RAV/RHV 036-072 may have more than one power switch. - Page 3 Motor and 48TC004997 Economizer harness plug harness plug 48TC006123 Hood Assembly with 48HC400238 Hood Assembly with 50HJ540574 Aluminum Filter 50HJ540610 Aluminum Filter CRECOMZR101A00 CRECOMZR102A00 Hardware Package contains one each Hardware Package contains one each (LL) (LL) of the following: of the following:...
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Page 4: Economizer Installation
For horizontal installations — Locate Mixed Air Temperature Table 5 — EconomizerONE Sensor Usage Switch (MTS) with its bracket on left side of the unit. EconomizerONE WITH OUTDOOR Remove left filter to access MTS bracket screws. Remove APPLICATION AIR DRY BULB SENSOR screws and relocate the bracket with MTS on the next set of (ACCESSORIES REQUIRED) holes up, having the bracket now above the opening of the fil-... - Page 5 See Detail A HVAC Unit Filters New Location Wiring Harness Factory Location Insert Screw in EconomizerONE EconomizerONE Flanges Detail A Fig. 3 — Vertical Economizer installed in R/A Section Unit Filter Rack EconomizerONE Hold Down Tab EconomizerONE Unit Base Fig. 6 — Mixed Air Temperature Switch Relocation for Select 7.5 to 12.5 Ton Horizontal Units EconomizerONE Rear Flange Fig.
- Page 6 Rooftop Unit’s 12-Pin Male Plug EconomizerONE R/A Blank Off Panel 12-Pin Female Plug Attach R/A blank off using 4 screws provided. Fig. 9 — Connect EconomizerONE Harness to Unit PL6 Economizer Harness Fig. 11 — Attach R/A Blank Off Panel NOTE: Steps 11-15 apply to horizontal units only.
- Page 7 EconomizerONE (POL 224) Controller Fig. 14 — Mount Controller Assembly in Unit Control Box Fig. 15 — Unplug ECON plug from Unit Control Board Fig. 16 — Connect 12-pin Plugs Together...
- Page 8 19. Connect the 12-pin female plug from the controller harness to 21. Locate the 4 wires labeled (Supply Air Thermostat) SAT and ECON on the UCB. Refer to Fig. 17 and wiring diagram on (Outdoor Air Thermostat) OAT, connected to the controller page 9.) harness.
- Page 9 Fig. 19 — Economizer Wiring Diagram...
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Page 10: Installing Optional Hh57Lw001 Single Outside Air Enthalpy Sensor
7000 6000 Hood 5000 Aluminum Filter 4000 Filter 3000 Clip 2000 Cleanable Aluminum Filter 1000 Outside Air 0.05 0.15 0.25 0.35 RETURN AIR PRESSURE DROP (in.wg) Fig. 22 — Return Air Pressure Drop Relief Air INSTALLING OPTIONAL HH57LW001 SINGLE Fig. 20 — EconomizerONE Hood Detail OUTSIDE AIR ENTHALPY SENSOR When using the HH57LW001 enthalpy sensor (see Fig. - Page 11 U.S. and Canada I-Codes / ASHRAE Zones Climate Zone 1 Climate Zone 5 and Marine Climate Zone 2 Climate Zone 6 Climate Zone 3 Climate Zone 7 and 8 Climate Zone 4 (Except Marine) Fig. 23 — U.S. and Canada Climate Zones Fig.
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Page 12: Enthalpy Settings (Enthalpy Option)
Table 6 — Enthalpy Manual Entry Setpoints for EconomizerONE Per Climate Zone Lowest CLIMATE ZONES 2 TEMP OFF 2 ENTH OFF 2THL 2EHL Setting 65°F 22 Btu/lbm 28 Btu/lbm 83°F 33 Btu/lbm 65°F 22 Btu/lbm 28 Btu/lbm 83°F 33 Btu/lbm 65°F 22 Btu/lbm 28 Btu/lbm... - Page 13 Fig. 25 — HH79NZ039 Dry Bulb and Mixed Air Sensor Wiring Fig. 26 — HH57LW001 Dimensional, Connection and Switching information Table 8 — HH57LW001 Sensor Wiring Terminations TERMINAL TYPE DESCRIPTION NUMBER LABEL TCOM NTC 10k Outside Air Temperature Sensor Output TSIG NTC 10k Outside Air Temperature Sensor Output...
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Page 14: Economizer Settings
LED indication ECONOMIZER SETTINGS NOTE: If different faulty events occur at the same time, then Interface Overview sensor/DAC LED lights up following the priority below: Red Yellow Off. For example, if there is a humidity sensor error ECONOMIZERONE and air temperature failure at the same time, then the sensor The field-installed accessory consists of the following: LED turns red rather than yellow. -
Page 15: Functions
Table 9 — LED Indication FREE SENSOR Power STATUS COOLING DAC LED Yellow Yellow Yellow Commissioning mode Blinking Blinking Blinking Power start up Yellow On Yellow On Yellow On Free cooling is running Green On — — Free cooling is available Green —... -
Page 16: Damper Modulation During Free Cooling
DAMPER MODULATION DURING FREE COOLING NOTE: When both free cooling and mechanical cooling are on, damper remains fully open regardless of the modulating Once outside air is suitable for free cooling, the controller modu- logic. lates the damper based on MAT (mixed air temperature, default) or OAT (outside air temperature). -
Page 17: Multi-Speed Fan Support
Table 11 — 1 and 2-Stage Cooling Stage I/O Logic Table 14 — Different Fan Speeds with Different Configured Outputs ECONOMIZER COOLING COOLING CONDITION MET STAGE 1 STAGE 2 1-SPEED 2-STAGE 3-STAGE TYPE COOLING COOLING COOLING • Spd H) • Spd H) •... -
Page 18: Cooling Delay Via Increasing Fan Speed
Table 16 — Different Damper Position Setting with Different Configured Outputs (DCV is Enabled) FAN TYPE 1-STAGE COOLING 2-STAGE COOLING 3-STAGE COOLING • 2VENTMIN H to 2VENTMAX H • 2VENTMIN H to 2VENTMAX H • 2VENTMIN H to 2VENTMAX H 1-SPEED FAN (regardless of cooling demand, (regardless of cooling demand,... -
Page 19: Exhaust Fan Operation
EXHAUST FAN OPERATION 100%. The controller places the damper to a proper position to meet minimum or any other airflow requests in cfm. Users can Up to two exhaust fans can be connected to the economizer enable this function only from the Climatix mobile application if ™... -
Page 20: Mounting, Installation, And Wiring
MOUNTING, INSTALLATION, AND WIRING WARNING Failure to follow this caution may result in damage to equipment. Be sure to allow enough time for compressor startup and shutdown between checkout tests so that the compressors do not short-cycle. Mounting the Economizer Controller Base Module Before mounting, leave specific mounting clearances so that there is space for mounting, wiring, and servicing. - Page 21 Table 18 — Economizer Control Wiring Settings LABEL TYPE DESCRIPTION RS485 Modbus A Line A RS485 Modbus B Line B ¬ GND_ISO Earth Ground Type II NTC 10K or 0-10 vdc Mixed or Discharge Air Temperature Sensor Mixed or Discharge Air Temperature Sensor Common Type II NTC 10K or 0-10 vdc Outside Air temperature Sensor 0-10 vdc or 4-20mA...
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Page 22: Controller
Connecting Peripheral Devices to the Economizer Controller Refer to Fig. 34-39 for wiring details. • Outside Air: Connect to the Mixed or Discharge Air Temperature Sensor OAT and COM terminals of the Outside Air Temperature Sensor device. • Return Air (Differential): Return Air Temperature Sensor Connect to the RAT... - Page 23 • Outside Combination Temperature/ Humidity: Connect Combo Temperature and Humidity Sensor to the OAT, COM, and OAH terminals of the device. • Combo Temperature and Humidity Sensor Return Combination Temperature/ Humidity: Connect to the RAT, S-COM, and RAH terminals of the device. Fig.
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Page 24: Setup And Configuration
Fig. 39 — Single Dry-Bulb Switchover, Thermostat, Damper Actuator, OAT and MAT Sensors Typical Wiring SETUP AND CONFIGURATION IMPORTANT: Not all operations are available on the local IMPORTANT: Before setup and configuration, it is recommend- POL 224. For example, users can only obtain shutoff setpoints ed to obtain some location-based values, such as shutoff points, and perform cfm commissioning via the Climatix mobile... - Page 25 Table 19 — Status Display PARAMETER DESCRIPTION VALUE 1FREECOOL Indicates if the system can use outdoor air for free cooling. 1ECON ENAB Indicates if outdoor air is being used for the 1st stage of cooling. Indicates if the space is occupied. If users choose ALWAYS for 6OCC when configuring I/ Os, then the parameter value is YES;...
- Page 26 Table 20 — Parameter Settings — Basic PARAMETER DESCRIPTION RANGE DEFAULT Temperature shutoff setpoint can be obtained automatically if a smartphone or tablet is connected to the network provided by a Wi-Fi/WLAN stick 2 TEMP OFF plugged into the economizer controller and the Climatix ™...
- Page 27 Table 21 — Parameter Settings — Advanced PARAMETER DESCRIPTION VALUE/RANGE DEFAULT 3FREEZE POS Anti-freeze protection damper position (closed or minimum). 3STG3 DLY Highest stage cooling delay time. 0...240m; increment by 5 3SD ACT POS Damper position during shutdown (open or closed). MAT sensor location: •...
- Page 28 Table 22 — Parameter Settings — I/O Configurations (cont) PARAMETER DESCRIPTION VALUE DEFAULT Choose COOL 2 if Cooling Stage 2 is available (another compressor is COOL 2 6Y2O COOL 2 connected to the Economizer). Otherwise, choose NONE. NONE Auxiliary DO-1. Configurable as: NONE •...
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Page 29: Start-Up
Table 25 — Enter Running State PARAMETER DESCRIPTION 8RUN STATE Change to Running State. Press Enter to confirm the change. 8ENTER RUN? Confirm the change to Running State. Perform factory reset. Press Enter to confirm the reset. (This action resets the controller 8FACTORY DEF password to default: OneBT.) 8DEF CONFIRM? -
Page 30: Appendix A - Troubleshooting
APPENDIX A — TROUBLESHOOTING Table A — Operating Issues and Concerns SYMPTOM REASON SOLUTION An alarm is displayed on Sensor, damper, or the whole working Check sensor, damper, or the whole working system following the detailed alarm the LCD system may not work properly information. -
Page 31: Appendix B - Sequence Of Operation
APPENDIX B — SEQUENCE OF OPERATION EXAMPLES Table B — Fixed Dry-Bulb without DCV (CO Sensor) — 2-Speed Fan THERMOSTAT ECONOMIZER OA GOOD TO DAMPER CONTROL MODE OCCUPIED ECONOMIZE? POSITION Min Pos L Min Pos L to 100% On, <15 mins Min Pos H to 100% Cooling On, >15 mins... - Page 32 APPENDIX B — SEQUENCE OF OPERATION EXAMPLES (CONT) Table C — Fixed Dry-Bulb with DCV (CO Sensor) — 2-Speed Fan In Conventional Mode THERMOSTAT ECONOMIZER OA GOOD TO DAMPER CONTROL MODE OCCUPIED EF (1 or 2) ECONOMIZE? POSITION Closed VENT MIN L to On/Off >SP VENT MAX L...
- Page 33 APPENDIX B — SEQUENCE OF OPERATION EXAMPLES (CONT) Table C — Fixed Dry-Bulb With DCV (CO Sensor) — 2-Speed Fan In Conventional Mode (cont) THERMOSTAT ECONOMIZER OA GOOD TO DAMPER CONTROL MODE OCCUPIED EF (1 OR 2 ECONOMIZE? POSITION SP VENT MIN L Cooling SP...
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Page 34: Appendix C - Modbus Addresses
APPENDIX C — MODBUS ADDRESSES REGNO (ADR+1) FUNCTION CODE REGISTER-NAME DATA TYPE 1001 04 Read Input Register OATP AVAL 1003 04 Read Input Register RATP AVAL 1005 04 Read Input Register OAHP AVAL 1007 04 Read Input Register RAHP AVAL 1009 04 Read Input Register MATP... - Page 36 © 2024 Carrier Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53480416-01 Printed in U.S.A. Form No. IIK-CRECON-SRT-01 Rev. C Pg 36 1-24 Replaces: NEW...
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