Lennox 10C16 Control Module

The Lennox 10C16, also known as the iHarmony Zoning Damper Control Module, is a high-performance HVAC communication module designed for precise multi-zone airflow management. This 24VAC control board integrates seamlessly with Lennox iComfort S30 and S40 smart thermostats to regulate up to four independent zones, ensuring consistent static pressure control and optimized discharge air temperatures. Built for technical reliability, the 10C16 module coordinates motorized zone dampers and includes a discharge air temperature sensor (DATS) to prevent equipment cycling issues and improve variable-capacity HVAC system efficiency. Whether you are performing a Lennox iHarmony installation or replacing a legacy zoning control panel, this OEM component maintains the communication link between variable-speed indoor units and modulating outdoor equipment for balanced climate regulation.

• Advanced Zoning Logic: Supports up to four separate zones with automatic airflow distribution based on real-time demand.
• Communication Synergy: Fully compatible with iComfort communicating systems, eliminating the need for complex conventional wiring in most applications.
• System Protection: The included 88K38 discharge air temperature sensor monitors plenum conditions to protect the heat exchanger and evaporator coil.
• Versatile Compatibility: Works with round or rectangular spring-open/power-close dampers and accommodates HFC-410A high-pressure switches for heat pump heating modes.

• Does this module support non-communicating outdoor units? Yes, the 10C16 can interface with conventional single-stage or two-stage outdoor units when paired with a compatible Lennox communicating indoor unit.
• How many zones can one module handle? A single iHarmony control module supports a maximum of four zones; Zone 1 is typically managed by the main S30/S40 thermostat.
• Is a separate transformer required? Yes, the damper control module and its connected dampers must be powered by a field-provided 24VAC transformer, separate from the indoor unit's control circuit.

This item is not eligible for free shipping.

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.