Installation Instructions Document No. 129-433 February 18, 2016 QPM Series Indoor Air Quality Duct Sensors Item Number 129-433, Rev. GA Page 1 of 4 Product Description The QPM Series Indoor Air Quality Duct Sensors are designed for applications where precise, stable sensing of carbon dioxide (CO 2 ), temperature, or relative humidity sensing is required. Model QPM2102 senses both volatile organic compounds (VOCs) and CO 2 , with the output signal automatically switching to reflect the higher of the two values. These sensors are directly wired to the controller with 18 to 22 AWG (recommended) multi-conductor shielded cable. The number of conductors required depends on the model selected. All field wiring is terminated in a terminal block on the sensor body. The output signal is field selectabe for 0 to 10V or 0 to 5V. Siemens CO 2 + VOC sensors are designed to help maximize occupant comfort and are not suitable for use in life safety applications. Product Numbers Product Number Description QPM2100CO 2 sensing only QPM2102CO 2 and VOC sensing only QPM2102D CO 2 and VOC sensing with display QPM2160CO 2 and temperature (active) sensing only QPM2160D CO 2 and temperature (active) sensing with display QPM2162CO 2 , rh and temperature (active) sensing only QPM2162D CO 2 , rh and temperature (active) sensing with display QPM2180CO 2 and temperature (passive) sensing only (depending on connected sensing element-- LG-Ni1000, Pt1000, Pt100, or NTC 10K Ω.) Additional Reference Documents Technical InstructionsCE1N1962 Technical Specification Sheet149-909 Expected Installation Time One hour Required Tools · Phillips screwdrivers, No. 1 and No. 2 · Wire cutters/strippers · Medium flat-blade screwdriver · Tape measure · Medium-duty electric drill · Marker or pencil · No. 26 (0.147-inch) drill bit · Small level · 7/8-inch drill bit or hole saw · Two No. 8 × 1-inch sheet metal screws Prerequisites · Ensure that the appropriate field wiring is installed. Appropriate wiring is 8 to 22 AWG (recommended) multi-conductor shielded cable (plenum or non-plenum as required), within the maximum wiring run length for the individual equipment controller. SeeWiring Diagrams to determine the required number of conductors. The maximum recommended length is 750 feet (229 m). · Ensure that all wiring complies with National Electric Code (NEC) and local regulations. · Allow up to 96 hours for unit to reach published accuracy. Mounting Information Locate the sensor: · In the center of a duct. · Away from fans, corners, heating and cooling coils, and so on. · Away from direct sunlight (for example, not on a rooftop). To ensure correct operation, the sensor’s ambient temperature must be between 23°F and 133°F (–5°C to 45°C). · Where it receives adequate airflow for proper operation. · Where it can be easily accessed for service.Document No. 129-433 Installation Instructions February 18, 2016 Page 2 of 4Siemens Industry, Inc. · If used in connection with steam humidifiers, the distance to the humidifier must be a minimum of 9.8 feet (3 m). The distance should be as great as possible, but no more than 33 feet (10 m). NOTES: To ensure degree of protection IP 54, the sensor must be fitted with the cable entry pointing downward. Handle the immersion rod carefully. The internal sensing elements are susceptible to impact and shock. Figure 1. Acceptable Mounting Positions. Instructions 1. Drill a 7/8-inch diameter hole into the duct at the desired location of the sensor. 2. Decide if the sensor will be mounted directly to the duct or if the mounting flange will be used. · Sensor Mounting Bracket Installation a. Remove the sensor cover, using the indented tabs. See Figure 2. Figure 2. b. Use the bracket as a template, and drill two holes with a No. 26 (0.147-inch) drill bit. Figure 3. Drilling Template. c. Attach the sensor mounting bracket and gasket to the duct using two No. 8 × 1-inch sheet metal screws. See Figure 4 . Figure 4. d. Insert the sensor in the duct through the bracket and tighten the mounting screw to set the insertion depth. See Figure 4 . · Direct Installation: a. Remove the sensor cover, using the indented tabs. See Figure 2. b. Use the base as a template, and drill four holes with a No. 26 (0.147-inch) drill bit. See Figure 3. c. Insert the probe through the gasket and into the hole. Secure the head to the duct with four No. 8 × 1-inch sheet metal screws. d. Attach conduit or plenum wire to the sensor base. e. If you are using conduit, pull the field wiring through the conduit and into the sensor base. f. Connect the field wiring to the sensor terminal block on the base. See Figure 7 through Figure 10 for wiring diagrams. g. Reinstall the sensor cover. See Figure 4 . The installation is now complete.Document No. 129-433 Installation Instructions February 18, 2016 Siemens Industry, Inc.Page 3 of 4 Installing Sensing Temperature Elements (QPM2180 Only) The QPM2180 is shipped with four sensing elements: NTC 10K Ohm, Platinum 1000, Nickel 1000 and Platinum 100 (packaged separately). Figure 5. Sensing Element Selections. To install the sensing element of your choice, follow the instructions depicted in Figure 6: 1. Remove the protective end cap. 2. Insert the element. 3. Using a small, flat-blade screwdriver, tighten the sensor’s two mounting screws. 4. Replace the protective end cap. Figure 6. Installing the Sensing Element.Document No. 129-433 Installation Instructions February 18, 2016 Information in this publication is based on current specifications. The company reserves the right to make changes in specifications and models as design improvements are introduced. Product or company names mentioned herein may be the trademarks of their respective owners. © 2016 Siemens Industry, Inc. Siemens Industry, Inc. Building Technologies Division 1000 Deerfield Parkway Buffalo Grove, IL 60089 USA + 1 847-215-1000 Your feedback is important to us. If you have comments about this document, please send them to SBT_technical.editor.us.sbt@siemens.com Document No. 129-433 Printed in the USA Page 4 of 4 Wiring Diagrams Figure 7. QPM2180. Figure 8. QPM2160, QPM2160D. Figure 9. QPM2100, QPM2100D.Figure 10. QPM2162, QPM2162D. Figure 11. QPM2102, QPM2102D. GSystem voltage 24 Vac (SELV)U3Signal output 0 to 10 Vdc or 0 to 5 Vdc G0 System ground and measuring neutralR..(*) Signal output with R...= 0 to 10 Vdc; U1 Signal output 0 to 10 Vdc or 0 to 5 Vdcwithout R... = 0 to 5 Vdc U2 Signal output 0 to 10 Vdc or 0 to 5 VdcB, M Passive temperature output (interchangeable) NOTE: SeeQPM Series Indoor Air Quality Duct Sensors Technical Instructions (CE1N1962) for information on positioning the jumpers on the setting elements.Next >