Honeywell TH8321R1001/U

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Honeywell TH8321R1001/U Low Voltage Programmable Thermostat, 40 - 90 deg F Heat, 50 - 99 deg F Cool, 3 Stages Heat

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Honeywell Honeywell VisionPRO® 8000 Programmable Thermostat, Low Voltage, 40 - 90 deg F Heat, 50 - 99 deg F Cool, +/-1 deg F Differential, 3 Stages Heat, 2 Stages Cool, Temperature Settings Per Day: 4, Programs Per Week: 7, Terminal Designations: R, RC, C, W-O/B, W2-Aux/E, Y, Y2, G, A-L/A, K, U1 U1, S1 S1, System Switching: Heat-Off-Cool-Auto-Emergency-Heat, Fan Switching: Auto-On-Circulate-Follow Schedule, LCD Display, 18/30 VAC, 50/60 Hz, Hardwired/Battery, Horizontal Mount, Arctic White, 4-5/8 Inch L x 4-15/16 Inch W x 1-1/8 Inch D, Includes: UN 3091 Lithium Metal Battery

  • Thermostat works standalone or with the THM5421R1021 equipment interface module or with the TrueZONE® wireless adapter
  • Smart schedule programs in seconds for any lifestyle
  • Patented interview based programming and installer setup
  • RedLINK™ wireless communication
  • Increase profit per job by including RedLINK™ accessories that provide comfort and convenience. RedLINK™ accessories include the RedLINK™ internet gateway, portable comfort control (PCC), wireless outdoor sensor, wireless indoor sensor, wireless entry/exit remote, wireless vent and filter boost remote, TrueSTEAM™ humidifier with wireless adapter and TrueZONE® zoning panel with wireless adapter
  • Light commercial language (occupied and unoccupied), schedule holidays and custom events, remote setback economizer and time of day. Remote setback requires the THM5421R1021 equipment interface module
  • Plain language setup no manual needed
  • Alerts and user interactions log - keeps a searchable history of alerts and setting changes to the thermostat to determine if there is a system malfunction or if the issue was caused by a user error. Saves time in troubleshooting and points the technician in the right direction. The alert and user interaction logs are viewable on a computer after you download them from the thermostat to a microSD card
  • Customizable service reminders allow dealers to remind their customers when its time to call for service, when their warranty is expiring and to provide customized alerts
  • MicroSD port for copying the installer setup customizable reminders, custom events and holidays to multiple thermostats
  • MicroSD port for adding the dealer's contact information on the screen
  • 1 assignable output on the TH8321 model to control humidification, dehumidification, ventilation or a stage of heating cooling
  • 3 assignable outputs on the equipment interface module to control humidification, dehumidification, ventilation or a stage of heating cooling. The TH8110 and TH8320 models require the use of a wireless indoor sensor to control humidification and dehumidification
  • 1 assignable input can be used with a wired outdoor, indoor or discharge sensor
  • 4 assignable inputs on the equipment interface module can be used with wired outdoor, indoor or discharge sensors, occupancy sensor for remote setback and dry contact devices to trip pre-packaged or custom alerts such as a full drain pan or water leak
  • Extend wireless range of the equipment interface module by connecting a THM4000R1000 wireless adapter to the ABCD terminals
  • Dual powered - battery or hardwired (C-wire)
  • Multiple staging options to provide comfort or energy savings

Application: Conventional and Heat Pump systems


Application Conventional or Heat Pump
Brand Name Honeywell
Control Range 40 - 90 deg F Heat, 50 - 99 deg F Cool
Differential +/-1 deg F
Dimensions 4-5/8 Inch L x 4-15/16 Inch W x 1-1/8 Inch D
Display LCD
Fan Switching Auto-On-Circulate-Follow Schedule
Includes UN 3091 Lithium Metal Battery
Individual Item Weight 1.1000
Manufacturer Honeywell
Manufacturer Name Honeywell
Mounting Type Horizontal
Number of Stages 3 Heat/2 Cool
Package/Shipping Weight 1.1
Power Source Hardwired/Battery
Programs Per Week 7
Series VisionPro 8000
Stages Cool 2
Stages Heat 3
System Switching Heat-Off-Cool Auto Emergency Heat
Temperature Settings Per Day 4
Terminal Designations R, RC, C, W-O/B, W2-AUX/E, Y, Y2, G, A-L/A, K, U1 U1, S1 S1
Type Low Voltage
UNSPSC 41112209
UPC 85267770439
Voltage Rating 18/30 VAC, 50/60 Hz



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