
Lennox 23M20 Temp Sensor
Engineered for high-precision environmental control, the Lennox 23M20 is a commercial-grade averaging zone sensor kit designed to provide stable temperature data to Prodigy and CORE Unit Controllers. This wall-mounted, non-communicating solution utilizes a 22k NTC thermistor to eliminate hot and cold spots in large open-plan spaces or multi-zone environments. Operating within a 40°F to 95°F range, the Lennox 23M20 Temp Sensor maintains an impressive accuracy of +/-0.36°F, ensuring exact climate regulation for L Series, S-Class, and Energence rooftop units. The kit includes two sensors that must be wired in parallel using shielded cable, such as Belden 88761, to provide a single averaged resistance value to the L Connection network or Network Thermostat Controller (NTC1-1). Housed in an off-white ABS plastic enclosure, these sensors provide a clean, professional finish for any commercial job site. This is an essential OEM component for HVAC zone temperature averaging where a single thermostat location cannot accurately represent the space's thermal load.
Key Benefits- Precise Averaging: Dual-sensor configuration eliminates localized temperature fluctuations, improving occupant comfort and system efficiency.
- Lennox Compatibility: Seamlessly integrates with Lennox M1, M2, and M3 Unit Controllers via designated terminal blocks or P298 connections.
- High Stability: Features a stability rating of +/-0.23°F to prevent short-cycling and maintain consistent airflow demands.
- Rugged Enclosure: Durable ABS plastic housing is designed to withstand high-traffic commercial environments while maintaining a low-profile aesthetic.
- Simple Wiring: Utilizes standard two-conductor shielded thermostat cable for straightforward field installation by technicians.
Can I use a single sensor from the 23M20 kit?
No. For the averaging logic to function correctly within the Lennox control architecture, both sensors must be installed and connected in parallel. Using a single sensor will result in incorrect resistance readings.
What is the best mounting location for these sensors?
Mount each sensor approximately 5 feet above the floor in areas with unobstructed air circulation. Avoid placing them near exterior doors, supply air diffusers, or in direct sunlight to prevent skewed data.
Which cable type is recommended for installation?
It is standard practice to use 22 AWG shielded, twisted-pair cable (Lennox P/N 94L63 or equivalent) to protect the low-voltage signal from electromagnetic interference on commercial sites.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $90.27
-65%$90.27
$31.59Lennox 23M20 Temp Sensor
Engineered for high-precision environmental control, the Lennox 23M20 is a commercial-grade averaging zone sensor kit designed to provide stable temperature data to Prodigy and CORE Unit Controllers. This wall-mounted, non-communicating solution utilizes a 22k NTC thermistor to eliminate hot and cold spots in large open-plan spaces or multi-zone environments. Operating within a 40°F to 95°F range, the Lennox 23M20 Temp Sensor maintains an impressive accuracy of +/-0.36°F, ensuring exact climate regulation for L Series, S-Class, and Energence rooftop units. The kit includes two sensors that must be wired in parallel using shielded cable, such as Belden 88761, to provide a single averaged resistance value to the L Connection network or Network Thermostat Controller (NTC1-1). Housed in an off-white ABS plastic enclosure, these sensors provide a clean, professional finish for any commercial job site. This is an essential OEM component for HVAC zone temperature averaging where a single thermostat location cannot accurately represent the space's thermal load.
Key Benefits- Precise Averaging: Dual-sensor configuration eliminates localized temperature fluctuations, improving occupant comfort and system efficiency.
- Lennox Compatibility: Seamlessly integrates with Lennox M1, M2, and M3 Unit Controllers via designated terminal blocks or P298 connections.
- High Stability: Features a stability rating of +/-0.23°F to prevent short-cycling and maintain consistent airflow demands.
- Rugged Enclosure: Durable ABS plastic housing is designed to withstand high-traffic commercial environments while maintaining a low-profile aesthetic.
- Simple Wiring: Utilizes standard two-conductor shielded thermostat cable for straightforward field installation by technicians.
Can I use a single sensor from the 23M20 kit?
No. For the averaging logic to function correctly within the Lennox control architecture, both sensors must be installed and connected in parallel. Using a single sensor will result in incorrect resistance readings.
What is the best mounting location for these sensors?
Mount each sensor approximately 5 feet above the floor in areas with unobstructed air circulation. Avoid placing them near exterior doors, supply air diffusers, or in direct sunlight to prevent skewed data.
Which cable type is recommended for installation?
It is standard practice to use 22 AWG shielded, twisted-pair cable (Lennox P/N 94L63 or equivalent) to protect the low-voltage signal from electromagnetic interference on commercial sites.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
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Description
Engineered for high-precision environmental control, the Lennox 23M20 is a commercial-grade averaging zone sensor kit designed to provide stable temperature data to Prodigy and CORE Unit Controllers. This wall-mounted, non-communicating solution utilizes a 22k NTC thermistor to eliminate hot and cold spots in large open-plan spaces or multi-zone environments. Operating within a 40°F to 95°F range, the Lennox 23M20 Temp Sensor maintains an impressive accuracy of +/-0.36°F, ensuring exact climate regulation for L Series, S-Class, and Energence rooftop units. The kit includes two sensors that must be wired in parallel using shielded cable, such as Belden 88761, to provide a single averaged resistance value to the L Connection network or Network Thermostat Controller (NTC1-1). Housed in an off-white ABS plastic enclosure, these sensors provide a clean, professional finish for any commercial job site. This is an essential OEM component for HVAC zone temperature averaging where a single thermostat location cannot accurately represent the space's thermal load.
Key Benefits- Precise Averaging: Dual-sensor configuration eliminates localized temperature fluctuations, improving occupant comfort and system efficiency.
- Lennox Compatibility: Seamlessly integrates with Lennox M1, M2, and M3 Unit Controllers via designated terminal blocks or P298 connections.
- High Stability: Features a stability rating of +/-0.23°F to prevent short-cycling and maintain consistent airflow demands.
- Rugged Enclosure: Durable ABS plastic housing is designed to withstand high-traffic commercial environments while maintaining a low-profile aesthetic.
- Simple Wiring: Utilizes standard two-conductor shielded thermostat cable for straightforward field installation by technicians.
Can I use a single sensor from the 23M20 kit?
No. For the averaging logic to function correctly within the Lennox control architecture, both sensors must be installed and connected in parallel. Using a single sensor will result in incorrect resistance readings.
What is the best mounting location for these sensors?
Mount each sensor approximately 5 feet above the floor in areas with unobstructed air circulation. Avoid placing them near exterior doors, supply air diffusers, or in direct sunlight to prevent skewed data.
Which cable type is recommended for installation?
It is standard practice to use 22 AWG shielded, twisted-pair cable (Lennox P/N 94L63 or equivalent) to protect the low-voltage signal from electromagnetic interference on commercial sites.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.












