Product Details
The Honeywell Prestige 2-wire IAQ kit with Redlink™ YTHX9421R5085WW is a high-definition color touchscreen thermostat designed for 3H/2C conventional or 4H/2C heat pump systems, suitable for residential or light commercial use. It controls up to 4 stages of heat and 2 stages of cool in heat pump systems and up to 3 stages of heat and 2 stages of cool in conventional systems. The kit includes three sets of universal IAQ contacts for controlling humidification, dehumidification, and ventilation, as well as four sensor inputs for wired sensors or dry contact devices. It operates with an equipment interface module and is compatible with Redlink™ accessories such as the Redlink™ Internet gateway, portable comfort control, wireless outdoor sensor, and wireless indoor sensor. The system controls heating, cooling, and IAQ equipment with only two wires at the thermostat, while equipment wiring connects to the equipment interface module. It features smart scheduling programmable in seconds for any lifestyle, patented interview-based programming and installer setup, and Redlink™ wireless communication. The thermostat meets commercial code and is Title 24 compliant, offering commercial language for light commercial applications including occupied/unoccupied modes, scheduled holidays and custom events, remote setback, economizer functionality, and time-of-day settings. Additional diagnostics include Delta T alerts to inform customers when system performance is suboptimal, with instructions provided for corrective action.
