The TH8320U and TH8321U Touch Screen Universal Programmable or Non Programmable Thermostat:
These thermostats provide electronic control of 24 Vac heating and cooling systems or 750 mV heating system.
Large, Clear Display with Backlighting
•current temperature, set temperature and time are easy-to-read and all are displayed on the home screen.
Menu Driven Programming
•Guides you through the scheduling process, showing only necessary information and choices on each screen.
Ability to Select Multiple Days
•allows you to easily customize the thermostat for your unique schedule.
•keeps time during power failure; automatically updates for daylight savings.
•allows you to remove thermostat from wall to set the schedule.
Precise Temperature Control (+/- 1
•reliable, consistent comfort.
Multiple HOLD options
•allows you to modify schedule indefinitely or for a specific time.
•reminds you to service or replace the air filter, humidifier pad, ultraviolet lamp or thermostat batteries.
•increases air quality when combined with a whole-house air cleaner.
Outdoor Temperature Indication (Select Models)
•shows current outdoor temperature on the display to help you plan outdoor activities.
Application Universal Touch Screen Heating & Cooling Thermostat with Dehumidification Control.
Programmability Universal Programming from 7 Day to Non-Programmable.
Changeover Automatic/Manual Selectable.
Power Method Battery or Hardwired.
Color Premier White
Terminal Designations R, Rc, C, W, Y, G, Y2, W2, S1, S2 for Conventional Systems; R, Rc, C, O/B, Y, Y2, G, L, E, Aux, S1, S2 for Heat Pump Systems.
Dimensions (in.) 4 9/16 in. high, 6 in. wide, 1 1/4 in. deep.
Humidity Ratings (% RH) 5 to 90% RH, non-condensing.
Setting Temperature Range (F) Heat: 40 F to 90 F; Cool: 50 F to 99 F.
Setting Temperature Range (C) Heat: 4.5 C to 32 C; Cool: 10 C to 37 C.
Differential Temperature (F) 1 F.
Differential Temperature (C) 0.5 C.
Outdoor Sensor Yes, optional outdoor or indoor remote.
Remote Sensor Yes, optional outdoor or indoor remote.
Sensor Element Thermistor.
Currents (Heating) 1.0 A running.
Currents (Cooling) 1.0 A running.
Currents (Fan) 0.6A running.
Comments Works with conventional and heat pump systems.
Emergency Heat Switch position available when setup for Heat Pump Systems.
The L terminal is an input or output.
Stages Up to 3 Heat/2 Cool.
Switch Positions (Fan) AUTO-ON.
Switch Positions (System) HEAT-OFF-COOL-AUTO.
Electrical Ratings 20 to 30 Vac.
Frequency 50 Hz, 60 Hz.
Vision Pro 8000
Replaces Thermostat Part Numbers: TH8321U1006, W8900B1002, TH8321U-1006, PC8900A1007 DAMP8150A1009, CARTH8321U1006.