Hercules Product Info
Hercules Product Id YTH9421C1002
Product Description USE TH8321R1001 & THM5421R1021
Unit of Measure EA
Manufacturer Info
Manufacturer Name Honeywell
Brand Name Honeywell
Part Number YTH9421C1002/U
Product Description Honeywell VisionPRO® YTH9421C1002/U Universal Thermostat, Programmable Thermostat, 40 to 90 deg F Control, 1, 2, 3, C, R, RC, RH, R, W1-O/B, W2-AUX, W3-AUX2, Y, Y2, G, L, OUT1, OUT2, IN1, IN2, DATS1, DATS2, HUM1, HUM2, DHM1, DHM2, VNT1, VNT2 Terminal
Product Features
The VisionPRO® IAQ touch screen universal programmable thermostat provides electronic control of 24 VAC heating and cooling systems in addition to humidification, dehumidification and ventilation all with just 3 wires to the thermostat.
Advanced dual fuel control
Three wires to the living space allows for easy equipment upgrade without having to run additional thermostat wire
Thermostat connects with equipment interface module or EnviraZONE panel to control temperature, humidification, dehumidification and ventilation from a single point in the home
Automatically raises humidity levels throughout all rooms in the home, moisturizing air to prevent symptoms of dryness and to protect hardwood flooring and woodwork
Removes air pollutants by exchanging the stale air in a house with fresh, filtered air better than having an open window
Applications: For Heat/Cool Pump Applications
Product Documents
Document Type Download Link
Specification Sheet YTH9421C1002_Specification Sheet (pdf)
Product Specifications
Thermostat Type Programmable
Control Range 40 to 90
Terminal Designations 1, 2, 3, C, R, RC, RH, R, W1-O/B, W2-AUX, W3-AUX2, Y, Y2, G, L, OUT1, OUT2, IN1, IN2, DATS1, DATS2, HUM1, HUM2, DHM1, DHM2, VNT1, VNT2
System Switching Heat/Cool/Auto/Off
Fan Switching Auto/On/Circulate
Number of Stages 6
Stages Heat 4 Heat Pump, 3 Conventional
Stages Cool 2 Heat Pump, 2 Conventional
Humidity Range 5 to 90% Non-Condensing
Voltage Rating 20 to 30
Power Source Lithium Battery
Mounting Type Horizontal
Color Premier White®
Dimensions 6 in W x 1-1/4 in D x 4-9/16 in H