Product Description

The Honeywell YTHM5421R1010/U is a 2-wire IAQ equipment interface module. This product is designed to control multiple heating and cooling stages in both heat pump and conventional systems. It supports up to four stages of heat and two stages of cool for heat pump systems, or three stages of heat and two stages of cool for conventional setups. The module comes equipped with two duct sensors for enhanced indoor air quality management.

Universal IAQ contacts for humidification, dehumidification, and ventilation.
Four sensor inputs for wired sensors or dry contact devices.
Vertical mounting for flexible installation options.

Product Highlights

This equipment interface module is ideal for HVAC professionals requiring reliable control in various applications. Compatible with the Prestige IAQ thermostats, it facilitates efficient climate control in residential and light commercial environments.

Product Information

Standard Information

Manufacturer: Honeywell
Voltage Rating: 18 - 30 VAC

Technical Specifications

Power Source: Hardwired
Mounting Type: Vertical
Dimensions: 4-13/16 inches wide x 9-5/16 inches high x 1-5/8 inches deep
Weight: 1.25 pounds
Humidity Rating: 5 - 95% Relative Humidity, Non-Condensing
Temperature Rating: -40 to 165 degrees Fahrenheit
Stages: 4 Heat/2 Cool for Heat Pump, 3 Heat/2 Cool for Conventional
Terminal Designation: R, RC, RH, C, W-O/B, W2-AUX1, W3-AUX2, Y, Y2, G, A-L/A, U1, U2, U3, S1, S2, S3, S4, A, B, C, D

Brand	HONEYWELL
MPN	YTHM5421R1010/U

Honeywell YTHM5421R1010/U IAQ Module 18-30VAC 4 Heat/2 Cool Vertical Mount

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