Overview:

Lennox® Low GWP Refrigerant Detection System Non-Communicating Control Board ensures safe operation of Lennox residential HVAC systems equipped with R-454B refrigerant. The RDS Non-Communicating Control Board connects to the refrigerant detection sensor, the indoor unit, the outdoor unit and the thermostat to control the HVAC system if refrigerant is detected by the sensor. The RDS Non-Communicating Control Board functions with standard 24VAC or Lennox-communicating control interfaces.

Product Features:

• Detects unsafe levels of R-454B refrigerant and prevents refrigerant from reaching the lower flammability limit, should a leak occur in the indoor coil

 • Multicolor LED (light-emitting diode) communicates the state of the RDS Non-Communicating Control Board

• Test/Reset button (to verify the functionality of the RDS Non-Communicating Control Board)

• Composite case with mounting hardware for drywall installation • Supports a maximum of two refrigerant detection sensors

• Supports standard 24VAC control split HVAC equipment (Single-Stage, Two-Stage, Variable Speed, Heat Pump, AC, Gas Furnace, Air Handler); see “Thermostat Compatibility”

• Compliant with UL-60355-2-40 & CSA • Compatible with OEM approved sensor

NOTE: A refrigerant detection system must be installed on an outdoor unit that requires R-454B refrigerant. Some indoor units may already feature a refrigerant detection control functionality and may not require this kit; contact Technical Support for more information.