Resideo YTHX9421R7001WW Stat

For contractors managing high-end residential or light commercial installs, the Resideo YTHX9421R7001WW Prestige IAQ Kit is the gold standard for full-system integration. This advanced 2-wire thermostat system utilizes an Equipment Interface Module (EIM) to relocate all wiring away from the living space, allowing for a clean, professional finish with only two leads at the wall. Supporting up to 4H/2C Heat Pump or 3H/2C Conventional configurations, this kit provides granular control over humidification, dehumidification, and ventilation through three sets of universal IAQ contacts.

Leveraging RedLINK wireless technology, the Honeywell Prestige IAQ ensures robust communication with included wireless outdoor and indoor sensors without interference. This allows for Delta T Diagnostics and real-time alerts for system performance failures, such as full drain pans or leak detection, thanks to four assignable inputs on the EIM. The high-definition color touchscreen thermostat features an interview-based setup to streamline commissioning, ensuring the 7-day programmable schedule aligns perfectly with site requirements while remaining Title 24 compliant for commercial code adherence.

• Simplified Retrofits: Control complex multi-stage equipment and IAQ add-ons using just 2-wire communication at the thermostat.
• Superior Diagnostics: Monitors return and discharge air temperature to provide Delta T alerts, protecting equipment and improving service callbacks.
• Total IAQ Control: Dedicated contacts for humidifiers, dehumidifiers, and ventilators eliminate the need for external relays or controllers.
• Expanded Connectivity: Built-in RedLINK communication enables seamless wireless outdoor sensor integration and internet gateway access.
• Commercial Grade: Selectable residential or light commercial modes with occupancy setback and 365-day holiday scheduling.

How does this assist with problematic wiring in retrofits?
The Prestige IAQ uses a 2-wire protocol to communicate between the wall unit and the Equipment Interface Module (EIM). This allows you to install a full-featured system on existing 2-wire setups without pulling new thermostat cable.

Can I monitor system performance remotely?
By adding the RedLINK Internet Gateway, contractors and homeowners can monitor alerts and adjust settings via the app. The system also supports Delta T alerts to notify users when the system isn't reaching setpoints.

Is this compatible with dual-fuel or heat pump systems?
Yes, it supports up to 4 stages of heat and 2 stages of cool for heat pumps, with configurable balance points for optimized auxiliary heat staging.

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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.