Lennox 17A30 Thermostat

The Lennox 17A30 iHarmony Zone Sensor is a critical component for technicians deploying or maintaining high-performance Lennox iComfort-enabled systems. This low-voltage 12VDC device functions as a remote interface, communicating directly with the iHarmony Damper Control Module to provide localized climate management for up to four distinct zones. Unlike basic sensors, the 17A30 features a high-resolution touchscreen interface, allowing for precise setpoint adjustments and real-time monitoring of indoor humidity and system status. Designed for seamless HVAC zoning integration, it utilizes a 4-wire RSBus connection (PWR, C, D+, D-) and is backwards compatible with systems formerly utilizing the discontinued 10C17 in-zone thermostat. For optimal performance, professionals recommended using 18AWG unshielded cable for power and 22AWG shielded cable for data terminals to mitigate electronic noise. The 17A30 ensures variable-capacity equipment operates at peak efficiency by delivering conditioned air only where necessary, reducing total system load and improving component longevity.

• Precision Zoning Control: Enables independent temperature and humidity management for specific areas within an iComfort zoning system.
• Digital Communication: Leverages the RSBus architecture for real-time data exchange with the central iComfort S30 or Wi-Fi thermostats.
• System Efficiency: Minimizes energy waste by allowing variable-speed indoor units to modulate airflow based on specific zone demand.
• Installer-Friendly Design: Features mis-wire circuit protection and a low-profile wall mount that fits standard junction boxes or high-visibility living areas.

Is the 17A30 compatible with the newer Lennox S40 thermostat?
No, the 17A30 is specifically engineered for the iHarmony zoning system used with S30 and iComfort Wi-Fi controls. The S40 system utilizes the Smart Room Sensor (SRS) which is not interchangeable with iHarmony hardware.

Can I install this sensor on an outside wall?
It is not recommended. For accurate HVAC temperature sensing, install the unit approximately 5 feet above the floor on an interior wall away from direct sunlight, drafts, or heat-generating appliances.

What is the maximum wiring distance for the 17A30?
The total wire run between the Damper Control Module and any individual 17A30 zone sensor should not exceed 197 feet (60 meters) using 18-gauge thermostat wire.

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.