HONEYWELL C7232

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Details

Part Number C7232
Manufacturer HONEYWELL
Category Carbon Dioxide Sensor
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Description

Honeywell C7232 Series Carbon Dioxide Sensor and Controllers

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Datasheet

Download "Honeywell_C7232_Carbon_Dioxide_Sensor_Controller_datasheet1-383985566.pdf" (661 KiB)

Extracted Text

C7232A,B Sensor and Controller CARBON DIOXIDE SENSOR PRODUCT DATA FEATURES • Used for CO based ventilation control. 2 • Models available with LCD that provides sensor readings and status information. • Non-Dispersion-Infrared (NDIR) technology used to measure carbon dioxide gas. • Device provides voltage or current output based on CO levels. 2 • Models available with SPST relay output. • Automatic Background Calibration (ABC) algorithm based on long-term evaluation reduces required typical zero-drift check maintenance. C7232A C7232B 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 Contents Application ........................................................................ 1 Features ........................................................................... 1 Specifications ................................................................... 2 Ordering Information ........................................................ 2 Installation ........................................................................ 3 Wiring ............................................................................... 4 Checkout .......................................................................... 5 Appendix .......................................................................... 6 63-2571-12 C7232A,B SENSOR AND CONTROLLER SPECIFICATIONS Models: C7232 Sensor and Controller. A stand-alone carbon Relative Humidity (non-condensing): 0 to 95 percent. dioxide (CO ) sensor with two jumper-adjustable outputs 2 (one analog and one SPST relay). CO Pressure Dependence: 1.4% change in reading per 2 C7232A: Wall mount model. 1 kPa deviation from 100 kPa. C7232B: Duct mount model. Wiring Connections: NOTE: Models are available with or without a 4-digit LCD C7232A: 20-gauge cable with six 8 in. leadwires. that indicates the current CO concentration. 2 C7232B: 20-gauge cable with six 6 in. leadwires. Dimensions: Mounting: C7232A: See Fig. 1. C7232A: Vertical surface with standard single-gang C7232B: See Fig. 2. junction box. C7232B: Sheet metal duct with a sampling tube. Sensor Performance Ratings: Response Time: 1 min. Automatic Background Calibration (ABC) default: On. Carbon Dioxide Sensor: Operation: Non-dispersive infrared (NDIR). Calibration: This product is factory calibrated. No field cali- Sampling: Diffusion. bration is necessary for the life of this product. Range: 0 to 2000 ppm Accuracy: ± (30 ppm +2% of reading)*. Approvals: CE * This product complies with Title 24 Part 6, CEC Standard Underwriters Laboratories Inc. Listed, File No. E4436 for Residential and Non-Residential Buildings—2005, cUL when installed according to instructions. C7232B: Flammability Rating, UL94-5V C7232A: NEMA1 Electrical Ratings: C7232B: NEMA3 Power Supply: 24 Vac/dc ±20%, 50/60 Hz (Class 2). Maximum Power Consumption: 3W. Peak Current (at 20 ms): 600 mA. 1 (25) Relay: KNOCKOUTS 2-3/8 (60) Configuration: Shipped N.O. FOR EUROPEAN Contact Rating: 1A at 50 Vac/24 Vdc. APPLICATIONS STANDARD Minimum Permissible Load: 1 mA at 5 Vdc. UTILITY 5-1/16 Linear Analog Output: CONDUIT 2-3/8 (128) BOX Voltage: 0/2-10 Vdc (resistive load greater than (60) (2X4) 5000 ohms). MOUNTING Current: 0/4-20 mA (resistive load less than 500 ohms). HOLES Outputs (Jumper Adjustable, see Table 2): Analog: 0-10 Vdc (Default: 2-10 Vdc, 500 to 1500 ppm). Relay: Normally Open SPST (Default: Close at 800 ppm). 3-5/32 (80) M17540A Ambient Ratings: Fig. 1. C7232A dimensions in inches (mm). Temperature: Operating: +32°F to +122°F (0°C to +50°C). Storage: -4°F to +158°F (-20°C to +70°C). ORDERING INFORMATION When purchasing replacement and modernization products from your TRADELINE® wholesaler or distributor, refer to the TRADELINE® Catalog or price sheets for complete ordering number. 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 1885 Douglas Drive North Minneapolis, Minnesota 55422-4386 3. http://customer.honeywell.com or http://customer.honeywell.ca In Canada—Honeywell Limited/Honeywell Limitée, 35 Dynamic Drive, Toronto, Ontario M1V 4Z9. International Sales and Service Offices in all principal cities of the world. Manufacturing in Australia, Canada, Finland, France, Germany, Japan, Mexico, Netherlands, Spain, Taiwan, United Kingdom, U.S.A. 63-2571—12 2 C7232A,B SENSOR AND CONTROLLER 3. Gently pull the handle down toward the bottom of the device until a small gap between the subbase and the 3-5/16 (84) 1-13/16 (46) cover appears. 4. Remove the screwdriver and pull the cover straight down until it meets a stop. 5-5/8 5. Pull the cover straight off the subbase. (142) 1-5/8 8 (203) (41) M17592 B Fig. 2. C7232B dimensions in inches (mm). INSTALLATION When Installing this Product... 1. Read these instructions carefully. Failure to follow them BUTTON HEAD SOCKET CAP could damage the product or cause a hazardous SCREW condition. 2. Check the ratings given in the instructions and on the product to make sure the product is suitable for your A C application. 3. Installer must be a trained, experienced service ALLEN TOOL M17541 technician. 4. After installation is complete, check out product Fig. 3. C7232A cover removal. operation as provided in these instructions. C7232A Cover Replacement IMPORTANT All wiring must agree with applicable codes, 1. Feed the wires through the opening in the subbase. ordinances and regulations. 2. Place the cover, with a small gap at the top, flat on top of the subbase. 3. When the cover rests flat on the subbase, slide it straight up until it latches in place. CAUTION Health Hazard. Improper use can create dangerous situations. Location and Mounting Use in application for sensing carbon dioxide only. C7232 Sensors mount directly on the wall, sheet metal duct, or For life-safety applications, this device can function a panel. When planning the installation, allow enough only as a secondary or lesser device. clearance for maintenance and service. Mount the sensor in a well-ventilated area. CAUTION NOTES: Do not install the sensor where it can be affected by: Electrical Shock or Equipment Damage Hazard. — drafts or dead spots behind doors and in corners. Can shock individuals or short equipment —air from ducts. circuitry. Disconnect power supply before installation. Sensor must be mounted in a location which sees at lease one 4-hour unoccupied period per week so that the CO level drops to outdoor levels. Automatic 2 Background Calibration will not work properly in loca- CAUTION tions without four hours of unoccupied time per week, Equipment Damage Hazard. or where there are sources of CO other than people Electrostatic discharge can short equipment 2 (breweries, mushroom farms, etc). circuitry. Ensure that you are properly grounded before IMPORTANT handling the unit. This sensor is not for use in highly corrosive environ- ments. C7232A Cover Removal/Replacement C7232A Cover Removal (see Fig. 3) 1. Remove button head socket cap screw and set it aside. 2. Insert the head of a small screwdriver into the slot at the center and near the top of the cover. 3 63-2571—12 C7232A,B SENSOR AND CONTROLLER Wall Mounting WIRING The C7232 Wall Mount models can be mounted using two or four screws: The factory ships the device with the output default settings 1. Remove C7232 cover. shown in Tables 2 and 3. Set the jumpers and wire the device 2. Mount the subbase to the wall using washers and two or (see Table 1 and Fig. 6). four screws (not supplied) appropriate for the wall material. CAUTION NOTE: When mounting on a junction box, see Fig. 4. Electrical Shock or Equipment Damage Hazard. 3. Replace the cover. Can shock individuals or short equipment circuitry. Disconnect power supply before installation. STANDARD UTILITY CONDUIT BOX NO. 6 SCREW CAUTION Equipment Damage Hazard. Electrostatic Discharge Can Short Equipment Circuitry. FRONT Ensure that you are properly grounded before COVER handling the unit. SUBBASE IMPORTANT BUTTON HEAD SOCKET CAP 1. All low voltage connections to this device must be SCREW NO. 6 SCREW 24 Vac Class 2. 2. All wiring must comply with applicable local codes, M17542 ordinances and regulations. Fig. 4. Junction box mounting (C7232A). Table 1. C7232 Wiring Connections (see Fig. 6). Duct Mounting (see Fig. 5) Wire Color Designation Function 1. Place gasket on aspiration tube. Red G+ 24 V Hot Black G0 24 V Common IMPORTANT Ensure largest tab at tube control end is at the top. Yellow OUT1 Analog Output Signal Brown M Analog Output Common 2. Insert tube into duct; attach using screws and washers. Orange NO Relay Output Normally Open IMPORTANT Green COM Relay Output Common Leakage into the duct or the C7232 box cover from the room will skew the sensor readings. Ensure the C7232 box cover and duct seal completely. RED L1 (HOT) 24V 3. Place O-ring on tube end; mount the control to the tube. BLACK L2 1 YELLOW + ANALOG BROWN OUT 1 POWER SUPPLY. PROVIDE – DISCONNECT MEANS AND ORANGE OVERLOAD PROTECTION GREEN AS REQUIRED. M17543A Fig. 6. Wiring the C7232. M17591 Fig. 5. Duct mounting (C7232B). 63-2571—12 4 FLOW C7232A,B SENSOR AND CONTROLLER NOTES: Input Signal — Jumper sensors are shown on the sticker on the The C7232 Sensors have an adjustable range. These ranges inside of the cover. are determined by the SW1 and SW2 jumper settings (see — Use needle nose pliers to carefully reposition Table 2). jumpers. — The CO settings and the output signal settings 2 Table 2. CO Range Jumper Settings 2 are independent of each other. 0-100% and 20-100% are simply markings for the OUT jumper a SW1 SW2 AN (ppm) Relay (ppm) settings on the sensor (to differentiate between the On On 0 to 1000 1000 two voltage and the two current ranges) and do not refer to or alter the ppm range chosen. On Off 0 to 2000 1200 b b 500 to 1500 800 Off On Off Off 500 to 2000 1200 a When the level reaches this value, the contacts close; when the level drops 100 ppm below this value, the contacts open. b Setting when shipped from the factory. AN OUT SW1 SW2 Output Signal The output signal can be adjusted for 0/2-10 Vdc or 0/4-20 mA (see Table 3). Table 3. Output Signal Jumper Settings M32547 OUT AN 0-100% 20-100% Fig. 7. C7232 default jumper settings. Voltage 0-10Vdc 2-10Vdc Current 0-20 mA 4-20 mA Example For a CO setting of 0-2000 ppm and a voltage output of 0-10 Vdc, the output would be as shown in Table 4 (arbitrary points along 2 the analog curve). Table 4. 0-10 Vdc Output Example. CO Level (ppm) 2 0 200 400 600 800 1000 1200 1400 1600 1800 2000 Voltage Output (Vdc) 0 1 2 3 4 5 6 7 8 9 10 For a CO setting of 0-2000 ppm and a voltage output of 2-10 Vdc, the output would be as shown in Table 5 (arbitrary points along 2 the analog curve). Table 5. 2-10 Vdc Output Example. CO Level (ppm) 0 250 500 750 1000 1250 1500 1750 2000 2 Voltage Output (Vdc) 2 3456 789 10 CHECKOUT Perform a quick test of the unit with the unit powered: 1. Stand close to the unit and breathe air into the sensor. 2. Check the CO level registered by the controller to 2 ensure a strong rise. 3. When connected to a damper in a ventilation system, the controller typically signals an increase in air flow. 5 63-2571—12 CURRENT VOLTAGE 20 – 100% 0 – 100% ON OFF ON OFF 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 Table 7. Output Signal Jumper Settings for models Input Signal with date code prior to 0309. The C7232 Sensors have an adjustable range. These ranges are determined by the SW2 and OUT1 jumper settings (see OUT AN1 and AN2 (set Table 6). both the same) 0-100% 20-100% NOTE: When choosing analog output, be sure to set the Voltage 0-10Vdc 2-10Vdc SW1 jumper to the On position. Current 0-20 mA 4-20 mA Table 6. CO Range Jumper Settings for models 2 NOTES: with date code prior to 0309. — On duct models with date code prior to 0309, Jumper SW1 Jumper SW2 remove the screw holding the board in place to view jumper settings on reverse. (See Fig. 8.) a a Jumper Setting On Off On Off — The CO settings and the output signal settings 2 b c AN1 X 0 to 1000 0 to 2000 are independent of each other. 0-100% and 20- OUT1 — 100% are simply markings for the OUT jumper set- a c X 500 to 1500 500 to 2000 AN2 — tings on the sensor (to differentiate between the two voltage and the two current ranges) and do not b d d X Relay Switching 800 1200 refer to or alter the ppm range chosen. d X 1000 a Setting when shipped from the factory. b OUT1 jumper setting does not affect the Relay Switching. c The analog output will not work properly when SW1 is Off. SW2SW1 OUT d When the level reaches this value, the contacts close; when AN2 AN1 OUT1 the level drops 100 ppm below this value, the contacts Select open. Output Signal The output signal can be adjusted for 0/2-10 Vdc or 0/4-20 mA (see Table 7). M20494 Fig. 8. C7232 default jumper settings for models with date code prior to 0309. 63-2571—12 6 OFF ON OFF ON 0 – 100% 20 – 100% Voltage Current Voltage Current AN1 AN2 C7232A,B SENSOR AND CONTROLLER 7 63-2571—12 C7232A,B SENSOR AND CONTROLLER Automation and Control Solutions Honeywell International Inc. 1985 Douglas Drive North Golden Valley, MN 55422 Honeywell Limited-Honeywell Limitée 35 Dynamic Drive ® U.S. Registered Trademark Toronto, Ontario M1V 4Z9 © 2011 Honeywell International Inc. 63-2571—12 M.S. Rev. 03-11 customer.honeywell.com Printed in U.S.A.

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