• Five-year warranty

• Scheduling or non-scheduling

• Large backlit touch screen display

• Menu touch screen interaction

• Fan switching (touch screen)

• System switching (touch screen)

• Setpoint and configuration (touch screen)

• 1H/1C or 2H/2C or 3H/2C HP

• Heat pump O = on or B = on

• Emergency heat (electric/gas)

• De-humidification control models

• Fahrenheit or Celsius operation

• 24 VAC and/or 3-AAA batteries

• Wi-Fi accessible versions (WF)

• 10-year built-in memory retention

• Base included

• Remote sensor option (room or OSA)

• Seven-day schedule or manual

• 12- or 24-hour clock

• 2 or 4 occupied/unoccupied periods per day

• Adaptive intelligent recovery

• Proportional + Integral control

• Integral adjustment (Fast, Norm, Slow)

• Minimum compressor off timer

• Cycles/hour for cooling and heating

• OSA heat pump compressor lockout

• Screen lockout (partial/total)

• Auto daylight savings time

• Service reminders (TH) (filter, UV lamp, humidity pad)

• 30-day low battery indication

• Clean screen timer

• Change over (manual or auto)

• SP hold permanent or time out (TH)

• Holiday and override (TB)

• Individual setpoint range stops H/C

• Extended fan run time

• Temperature display offset ±3℉

• Installer test function

• Adjustable H/C deadband

• Economizer/scheduled contact (TB)

Supply Voltage:20-30 VAC, 50/60 Hz

Battery:Optional, 3-AAA

Accuracy:±1°F (0.5°C), system dependent

Supply Current:H/C - 1.0A, fan - 0.6A

Memory:10 years, then 3-AAA batteries required

Sensor Type:Built-in 10K thermistor

Remote Sensor:Room or OSA (accessory required)

Contact Type:SPST relays

Control:Proportional plus Integral (PI)

Dead-band:Adjustable, 2°/9°F, (1.5°/5°C)

Setpoint/Setback:Adjustable with programmable limits

 :Heating 40 to 90°F (10 to 32°C)

 :Cooling 50 to 99°F (10 to 37°C)

 :RH 40 to 80%, (TH8321)

Keypad Lockout:Unlocked, locked completely, or locked except setpoint

Display:3.5" x 2.5" backlit touch screen, temperature, humidity (TH8321), system, fan, time, day, setpoint, service reminders (TH), OSA temp if wired

Display Offset:±3°F (1.5°C), in 1°F (0.5°C) increments

Touch Screen Controls:

 :Setpoints Up/Down

 :System Heat/Off/Cool/Auto

 :Fan Control On/Auto/Circ (TH), On/Auto (TB)

 :Schedule 7 day, 2 or 4 periods

 :Hold (TH) Permanent or time out

 :Holiday (TB) Time out by days

 :Clock 12-hour or 24-hour, ±1 min./month

 :Screen °F/°C, backlight

 :Override Occupied time out

 :Menu Service set up, over 40 parameters

Wi-Fi Access (WF):Requires a Total Connect Account

Color:Premier white

Wiring:Terminals for 18 AWG wire

Operating Temperature:0° to 120°F (-18° to 49°C)

Operating Humidity:0 to 90% RH (non-condensing)

Mounting:Horizontal with base included

Enclosure Rating:NEMA 1, White plastic, indoors only

Dimensions:4.56"H x 6.0"W x 1.37"D

 :(11.6 x 15.24 x 3.5 cm)

Weight:1.1 lb (0.5 Kg)

Approvals:California Title 24 (TB), ADA compliant

Warranty:5 years