INSTALLATION INSTRUCTIONS senvainc.com 1-866-660-8864 (F)1-503-296-2529 9290 SW Nimbus Ave. Beaverton Oregon 97008 CT1R Select Series Room CO2 & CO2/T Transmitters IMPORTANT WARNINGS • Only qualified trade installers should install this product • This product is not intended for life-safety applications • Do not install in hazardous or classified locations • The installer is responsible for all applicable codes • De-energize power supply prior to installation or service COMPUTER ROOM WALL OR WINDOW TOO HOT/COLD INSIDE WALL TOO HOT/COLD COPIER TOO NEAR EQUIPMENT OR DOORWAY GOOD LOCATION GOOD LOCATION GOOD LOCATION PRODUCT APPLICATION LIMITATION: Senva products are not designed for life or safety applications. Senva products are not intended for use in critical applications such as nuclear facilities, human implantable device or life support. Senva is not liable, in whole or in part, for any claims or damages arising from such uses. INSTALLATION 1. IMPORTANT! Locate sensor in an area away from ventilation sources and heat generating equipment and appliances. Sensor should be mounted at light switch height in a vertical orientation. Use insulating material behind sensor to ensure reading accuracy. NOTE: Do not install sensor in multi-gang electrical boxes with line voltage or other electrical devices. 2. Wire sensor as shown above. 3. Set DIP switch positions to accommodate your application. DIP switch 2 only applies to units with transmitter temperature output selected. 4. See mounting section. 5. Apply power to sensor. OPERATION Press center MENU button to cycle between: SCL Scaling “2” = 2000ppm, “5” = 5000ppm, “10” = 10000ppm SPH Setpoint, Hi (Closed above this level) SPL Setpoint, Lo (Open below this level) ADJ Manual calibration adjustment +/-250ppm CAL *Automatic calibration - ON/OFF The upper arrow and lower arrow will show the current setting and then adjusted values on consecutive presses. For No Display: 0-2000ppm output and ABC is ON *For continuously occupied areas or greenhouses, it is recommended to turn automatic calibration to ‘off’. DT1R-XXX (Dual Channel CO2) products will have with calibration ‘off’ by default. PWR GND V1 I1 V2 I2 R1 R2 TH- TH+ THERMISTOR OUT THERMISTOR OUT COMMON CO2 OUT V CO2 OUT mA TEMP OUT V TEMP OUT mA PWR GND V1 I1 TH - TH + R1R2 SETPOINT RELAY* SETPOINT RELAY* DIP SWITCHES BUTTONS DOWN, MENU, UP MENU DIP UP DN 1 0-10V 0-5V 2 -40-60C 0-50C 1 ON 2MOUNTING IF MOUNTING INTO A JUNCTION BOX: 1. Remove drywall clamps by turning screw counter clockwise. IF MOUNTING INTO DRYWALL: 1. Turn both mounting clamps all the way counter clockwise. 2. Insert into drywall cutout. 3. Turn screw clockwise to tighten drywall mounts until tight to wall. CALIBRATION Automatic Calibration feature: The sensor will automatically track low ambient CO2 levels and gradually make adjustments to compensate for sensor drift due to long-term aging of the IR light source. In applications where CO2 levels are continuously elevated, or spaces are occupied day and night, it is recommended to use our standard room CO2 sensor with selectable automatic calibration. Senva CO2 sensors are factory calibrated to controlled test gases. No field calibration is necessary or recommended. However, to facilitate compliance with job requirements and commissioning procedures, provisions for field calibration are provided: 1. Locate calibration instrument and sensor in close proximity to each other in a controlled environment free of drafts, peo- ple, and equipment to reduce influence on CO2 and tempera- ture. 2. Compare output of sensor to calibration instrument, and note difference. (In 0-10V mode/2000ppm range, 1V =200ppm) 3. Using the buttons on front of unit, adjust offset value for CO2 as needed. Factory calibration may be restored by setting offset back to 0. In extreme cases where the sensor module has been damaged, a new module may be installed in the field. Consult factory for replacement module and instructions.SPECIFICATIONS TROUBLESHOOTING SymptomSolution No output Check wiring. Ensure power supply meets requirements. CO2 reading error Verify control panel software is configured for correct output scaling. Verify accuracy of test instrument. Observe installation and calibration guidelines Install insulation foam gasket provided to pre- vent thermal conduction from inside wall. Perform calibration only if necessary. Power supplyAC Supply/DC Supply24VAC (1) 100mA max / 12-30VDC, 50mA max Outputs CO2 and Temperature (option)3-wire 4-20mA, 0-5V or 0-10V (2) (selectable) RelaySolid state, 1A@30VAC/DC, N.O. Output scalingCO20-2000ppm (default), 0-5000ppm or 10,000ppm (selectable) CO2 Sensor Performance TypeNon-dispersive Infrared (NDIR) Accuracy (Standard) ±(30ppm +3% of reading) (400-2000ppm), @-10-50°C ±(50ppm +5% of reading) (2000-5000ppm), @-10-50°C ±(100ppm+10% of reading) (5000-10000ppm), @ 0-50C Accuracy (Dual Channel) ±(30ppm+3% of reading) (0-2000ppm), @ 0-50C ±(50ppm+3% of reading) (2000-5000ppm), @ -10-50C ±(100ppm+10% of reading) (5000-10000ppm), @ 0-50C Drift with ABC disabled (Standard)35ppm/month (3) Drift with ABC disabled (Dual Channel)5ppm/month (3) Range0-2000/5000ppm; Programmable up to 10,000ppm Response time 60s to 90% reading Output update rate1s Element Operating Environment(4)14 to 122ºF (-10 to 50ºC), 0 to 95% RH Temperature Transmitter Accuracy<±0.2 o C Resolution0.01 o C Repeatability0.04 o C Response time 2s Output update rate0.5s Element Operating range -40 to 140oF (-40 to 60 o C) Environmental Enclosure RatingIP20/NEMA 1 Max Operating Temp14 to 122oF (-10 to 50oC) (1) One side of transformer secondary is connected to signal common. Dedicated transformer is recommended. (2) 15-30VDC/24VAC power supply voltage required for 10 Volt output. (3) It is not recommended to de-activate ABC (auto-calibration) except for continously occupied spaces or greenhouses. Drift ratings may vary based on environment. (4) Operation outside of element operating environment may result in reduced accuracy. Revised 5/18/2020 Document #152-0132-0D DIMENSIONSNext >