Honeywell C7232A Product Data
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Honeywell C7232A Product Data

Honeywell C7232A Product Data

Sensor and controller, carbon dioxide sensor
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C7232A
APPLICATION
The C7232 Sensor and Controller is a stand-alone carbon
dioxide (CO
) sensor for use in determining ventilation
2
necessity with HVAC controllers. The C7232 measures the
CO
concentration in the ventilated space or duct. The C7232
2
is used in ventilation and air conditioning systems to control
the amount of fresh outdoor air supplied to maintain
acceptable levels of CO
in the space.
2
® U.S. Registered Trademark
Copyright © 2003 Honeywell International Inc.
All Rights Reserved
C7232B
®
Sensor and Controller
CARBON DIOXIDE SENSOR
FEATURES
• Models available with LCD that provides sensor
readings and status information.
• Non-Dispersion-Infrared (NDIR) technology used to
measure carbon dioxide gas.
• Gold-plated sensor provides long-term calibration
stability.
• Device provides voltage output based on CO
• Models available with SPST relay output.
• Used for CO
based ventilation control.
2
• Automatic Background Calibration (ABC) algorithm
based on long-term evaluation reduces required
typical zero-drift check maintenance.
Application ........................................................................
Features ...........................................................................
Specifications ...................................................................
Ordering Information ........................................................
Installation ........................................................................
Wiring ...............................................................................
Calibration ........................................................................
Checkout ..........................................................................
Appendix ..........................................................................
C7232A,B
PRODUCT DATA
levels.
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Contents
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63-2571-4

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  • Page 1 CO in the space. Contents Application ................ Features ................Specifications ..............Ordering Information ............Installation ................ Wiring ................Calibration ................ Checkout ................Appendix ................® U.S. Registered Trademark Copyright © 2003 Honeywell International Inc. ® All Rights Reserved 63-2571-4...

  • Page 2: Specifications

    If you have additional questions, need further information, or would like to comment on our products or services, please write or phone: 1. Your local Honeywell Automation and Control Products Sales Office (check white pages of your phone directory). 2. Honeywell Customer Care...

  • Page 3: Installation

    C7232A Cover Removal/Replacement 1. Read these instructions carefully. Failure to follow them could damage the product or cause a hazardous C7232A Cover Removal (see Fig. 3) condition. 1. Remove button head socket cap screw and set it aside. 2. Check the ratings given in the instructions and on the 2.

  • Page 4: Wiring

    2. All wiring must comply with applicable local codes, SCREW NO. 6 SCREW ordinances and regulations. M17542 Table 1. C7232 Wiring Connections (see Fig. 6). Fig. 4. Junction box mounting (C7232A). Wire Color Designation Function 24 Vac Hot Black 24 Vac Common...
  • Page 5 C7232A,B SENSOR AND CONTROLLER Table 3. Output Signal Jumper Settings C7232 (HOT) BLACK 0-100% 20-100% Voltage 0-10Vdc 2-10Vdc YELLOW ANALOG BROWN Current 0-20 mA 4-20 mA POWER SUPPLY. PROVIDE – DISCONNECT MEANS AND ORANGE OVERLOAD PROTECTION NOTES: AS REQUIRED. GREEN —...

  • Page 6: Calibration

    C7232A,B SENSOR AND CONTROLLER CALIBRATION CHECKOUT Typically, calibration is unnecessary. No calibration kits are Perform a quick test of the unit with the unit powered: available. However, if CO gas can be purged from the sensor 1. Stand close to the unit and breathe air into the sensor.

  • Page 7: Appendix

    C7232A,B SENSOR AND CONTROLLER APPENDIX IMPORTANT This page is only for models with date code prior to 0309. Pre 0309 Date Code Jumper Settings Input Signal Table 7. Output Signal Jumper Settings for models with date code prior to 0309.
  • Page 8 Automation and Control Solutions Honeywell International Honeywell Europe S.A. Honeywell Latin American Region Honeywell International Inc. Honeywell Limited-Honeywell Limitée Control Products 3 Avenue du Bourget 1985 Douglas Drive North 35 Dynamic Drive Honeywell Building 1140 Brussels 480 Sawgrass Corporate Parkway...

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