Lennox 56L80 Zone Sensor

The Lennox 56L80 Zone Sensor is a vital component for technicians managing L Connection network rooftop units. This wall-mount temperature sensor provides precise environmental monitoring by interfacing directly with the unit controller or through an integrated data port for diagnostic access. As a direct 1:1 replacement, the 56L80 is identical to 56L8001, ensuring seamless Lennox HVAC system compatibility without requiring modifications to existing field wiring.

Designed for professional-grade reliability, this 2-wire non-communicating sensor features a warmer/cooler adjustment lever for localized setpoint shifts. Using the onboard DIP switches, contractors can field-configure the adjustment range to +/-1°F or +/-4°F, or disable the adjustment entirely to prevent unauthorized tampering. The unit includes an after-hours override switch, allowing occupants to trigger temporary operation during unoccupied periods. Encased in a durable off-white plastic enclosure, it mounts easily to a standard handy box or directly to the wall surface using 22AWG minimum shielded twisted pair cable for optimal signal integrity.

Key Benefits

• Universal Compatibility: Fully interchangeable with the 56L8001 for simplified inventory management.
• Configurable Setpoints: Field-adjustable +/-1°F or +/-4°F range via internal DIP switches.
• Integrated Override: Built-in after-hours switch ensures occupant comfort during unscheduled usage.
• Simple 2-Wire Installation: Reduces labor time during Lennox zone sensor replacement on rooftop systems.
• Data Port Access: Features a SysBus/ZoneBus jack for network monitoring and diagnostics without interrupting operation.

Common Questions

Is the 56L80 compatible with all L Connection systems?
Yes, it is designed for use with Lennox rooftop units within an L Connection network, either as a primary zone sensor or for return air sensing applications when configured specifically for those layouts.

How do I adjust the temperature offset range?
Remove the sensor cover to access the internal DIP switches. These allow you to set the warmer/cooler lever range to either a restricted +/-1°F or a broader +/-4°F offset.

What type of wiring is required for this sensor?
For best performance and to minimize interference, use a minimum of 22AWG 1-twisted pair shielded cable, such as Lennox P/N 94L63 or Belden type 88761.

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.