VISIONPRO
®
8000 WITH WI-FI
®
3 33-00096—01
SPECIFICATIONS
Thermostat Description:
Power Consumption of TH8321:
Backlight on: 1.48 VA
Backlight off: 0.88 VA
Temperature Setting Range:
Heating: 40 to 90 °F (4.5 to 32 °C).
Cooling: 50 to 99 °F (10 to 37 °C).
Temperature Sensor Accuracy:
± 1.5 F at 70 F (0.75 C at 21.0 C)
Humidification Setting Range:
10% to 60% RH.
Dehumidification Setting Range:
40% to 80% RH.
Humidity Display Range:
0% to 99%.
Humidity Sensor Accuracy:
± 5% RH from 30% to 50% RH at 75 F.
Cool Indication:
VisionPRO® 8000 with Wi-Fi
®
displays “Cool On” when the
thermostat turns the cooling on.
Heat Indication:
VisionPRO® 8000 with Wi-Fi displays “Heat On” when the
thermostat turns the heating on.
Auxiliary Heat Indication:
VisionPRO® 8000 with Wi-Fi displays “Aux Heat On” when the
thermostat turns the auxiliary heat on.
Interstage Differential:
Comfort:
The thermostat keeps the indoor temperature within 1
degree of the setpoint (droop less control). The thermostat
turns on stage 2 when the capacity on stage 1 reaches 90%.
When the interstage differential is set to 1.0 or higher, the ther-
mostat stages the equipment based on how far the indoor
temperature is from the setpoint (ISU 303 to 309). See
page 16 for more information.
Clock Accuracy: 1 minute per month at 77 °F (25 °C). ± 2
minutes per month over the operating ambient temperature
range.
Mounting Means:
Thermostat mounts directly on the wall in the living space
using mounting screws and anchors provided. Fits a hori-
zontal 2 x 4 in. junction box.
Fig. 1. Dimensions of thermostat in in. (mm).
Feature Description
Powering method • Common wire
System types (up to
3 heat/2 cool heat
pump and up to
2 heat/2 cool
conventional)
• Gas, oil or electric heat with air
conditioning
• Warm air, hot water, high-efficiency
furnaces, heat pumps, steam and
gravity
• Cool only
Changeover Manual or Auto changeover selectable
System setting Em Heat-Heat-Off-Cool-Auto
Fan setting Auto-On-Circ-Follow Schedule
Terminal
Voltage
(50/60 Hz)
Max. Current
Rating
W - O/B 18 to 30 VAC and
750 mVDC
1.00A
Y (cooling) 18 to 30 VAC 1.00A
G (fan) 18 to 30 VAC 0.50A
W2 - Aux 1 (heating) 18 to 30 VAC 0.60A
Y2 (cooling) 18 to 30 VAC 0.60A
A-L/A (Output) 18 to 30 VAC 1.00A
U1, U1, S1, S1 30 VAC max. 0.50A
M34521
4-15/16 (126)
4-5/8
(118)
1-1/8 (29)
3-5/16 (84)
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