INSTALLATION INSTRUCTIONS senvainc.com 1-866-660-8864 (F)1-503-296-2529 9290 SW Nimbus Ave. Beaverton Oregon 97008 CT1D Duct Mount CT1O Outdoor Mount CO2 & Temp Transmitters 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 Duct: 1. Drill a 3/4” hole in duct. Install sensor using gasket and screws provided. The pickup tube will ensure adequate air flow regardless of air flow direction. Outdoor: 1. Select an outdoor location under an eave on the north side of the building away from direct sunlight and rain exposure. 2. If installing with a conduit adapter, remove and replace the factory-installed cable gland. 3. Wire sensor as shown. 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 DIMENSIONS OPERATION Press center MENU button to cycle between: SCL Scaling “2” = 2,000ppm, “5” = 5,000ppm, “10” = 10,000ppm SPH Setpoint, Hi (Closed above this level) SPL Setpoint, Lo (Open below this level) ADJ Manual calibration adjustment +/-250ppm CAL Automatic calibration - ON/OFF tos Temperature Offset value -5 to 5o in 0.1o increments o FC Temperature display selection oF or oC The upper arrow and lower arrow will show the current setting and then adjusted values on consectutive presses. If no LCD is present, defauult values will not be adjustable. 4. Set DIP switch positions to accomodate your application. DIP switch 2 only applies to units with transmitter temperature output selected. 5. Apply power to sensor. 6. Tighten cable gland firmly around wires. If installing with a conduit adapter, seal wire entry to prevent conduit air from affecting sensor readings or operation. 7. Close lid and tighten screw. Cover must be securely installed. DIP UP DN 1 0-10V 0-5V 2 -40-60C 0-50C 1 ON 2 MENU Buttons* Up, Menu, Down Dip Switches (Optional) LCD Screen Power CO Out mA CO Out V DC Common Temp Out mA or Thermistor (Optional) Temp Out V DC or Thermistor (Optional) PWR I V GND T-I T-V (Optional) Setpoint Relay CO Sensor *Buttons are not present on non-LCD versions Units: in [mm] Duct: Outdoor: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. 1. Locate calibration instrument and sensor in close prox- imity to each other in a controlled environment free of drafts, people, and equipment to reduce influence on CO2 and tem- perature. 2. 2. Compare output of sensor to calibration instrument, and note difference. (In 0-10V mode/2000ppm range, 1V =200ppm) 3. 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 Power supply (1) AC Supply/DC Supply24VAC (1) 100mA max / 12-30VDC, 50mA max OutputsCO2 and Temperature (option) Set-point Relay 3-wire 4-20mA, 0-5V or 0-10V (2) (selectable) Solid-state, 1A @ 30VAC/DC, N.O. Output scaling CO20-2000ppm (Default), 0-5000/10000 (Selectable) Temp. transmitter32 to 122 o F (0-50 o C) or -40 to 140 o F (-40-60 o C) (Selectable) Thermistor/RTD optionsYes, see ordering table in catalog Media filterPBT with water vapor-permeable membrane CO2 Sensor Performance TypeNon-Dispersive Infared (NDIR) Accuracy ±30ppm ±3% of reading(0-2000ppm)0-50°C, 0-85%RH ±50ppm ±5% of reading(2000-5000ppm)0-50°C, 0-85%RH Consult Factory for 5000-10000ppm accuracy Pressure Dependency+1% reading per kPa (0.143PSI) deviation from nominal (101kPa, 14.7PSI) Response time (2) 60s to 90% reading Sample rate1 second Update Rate1 second Element Operating Environment (3)4 to 122ºF (-20 to 50ºC), 0 to 95% RH Temperature (Transmitter) Accuracy ±0.5oC max from -10 to 50oC; ±0.2oC typ 0 to 65oC Resolution0.01oC Repeatability0.04oC Response time (4) >2s Environmental Enclosure RatingIP20/NEMA 1 *Vent bottom of outdoor enclosure to achieve NEMA 3R rating Max Operating TempOutdoor: -4 to 122oF (-20 to 50oC) Duct: 14 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) Operating outside of element operating environment may result in reduced accuracy. (4) Time for reaching 63% of reading at 25 o C and 1 m/s airflow. SymptomSolution No output Check wiring. Ensure power supply meets requirements. Temp or CO2 reading error Verify control panel software is configured for correct output scaling. Verify accuracy of test instrument. Observe installation and calibration guidelines. Verify unit is securely installed on duct without excessive air leakage. Offset calibration only if necessary. Sensor damage, contamination, or long-term drift Replace sensor element. Consult factory for ordering information. Revised 2/6/2020 Document #152-0381-0ANext >