Staging Control - Honeywell VisionPRO 8000 Product Data

Installer Options
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Fig. 100.
Using the Temperature Display
In some circumstances, the temperature displayed on the
Home screen may not match the temperature near the
thermostat.
If your system is set up to use indoor sensors, it may be
reading a sensor in another location.
Temperature reading depends on location of sensor
Fig. 101.
Universal Output (U1, U1)
The U1 universal output can be setup to control IAQ equipment
and a stage of heating or cooling in the Installer Setup. Setup
options are listed below.
MCR33976
Fig. 99.
0 0 0
MCR33977
MCR33985
Universal Output Options
TH8321 Thermostat Only (U1)
• Humidification (ISU 803)
• Dehumidification (ISU 904)
• Ventilation (ISU 1002)
• Cool Stage 3 (ISU 208)
• Conventional Heat Stage 3 (ISU 210, 214)
• Backup Heat Stage 2 for Heat Pumps (ISU 217)
• Geothermal Radiant Heat (ISU 203)
Sensor Input (S1, S1)
The S1 input can be setup to work with a sensor. See wiring
diagrams beginning on page 88. The thermostat has one
Sensor Input.
Sensor Option
Indoor Air Sensor (ISU 500)
• C7189U1005 (10K)
• C7772A1004 (20K)
• C7772A1012 (20K)
• TR21 (20K)
• TR21-A (10K)
Outdoor Air Sensor (ISU 500)
• C7089U1006 (10K)
Discharge Sensors (ISU 500)
• C7735A1000 (10k)
• C7770A1006 (20K)
• C7041 (20K)

Staging Control

Differential Between All Stages
The thermostat provides Differential settings between all
stages. The equipment changes stages based on how far the
indoor temperature is from the setpoint. Differential settings
provide a way to balance comfort and conservation.
Heat Differential
The indoor temperature must drop to the selected differential
setting before the thermostat will turn on the stage of heating.
For example, if stage 2 is set to 2 °F (1.0 °C), the indoor
temperature must be 2 °F (1.0 °C) away from the setpoint
before stage 2 turns on. When set to Comfort, the thermostat
will use the stage of heating as needed to keep the indoor
temperature within 1 °F (0.5 °C) degree of the setpoint. The
thermostat turns on stage 2 when the capacity on stage 1
reaches 90%.
Cool Differential
The indoor temperature must rise to the selected differential
setting before the thermostat turns on the stage of cooling. For
example, if stage 2 is set to 2 °F (1.0 °C), the indoor
temperature must be 2 °F (1.0 °C) away from the setpoint
before stage 2 turns on. When set to Comfort, the thermostat
uses the stage of cooling as needed to keep the indoor
temperature within 1 °F (0.5 °C) degree of the setpoint. The
thermostat turns on stage 2 when the capacity on stage 1
reaches 90%.
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VISIONPRO 8000 WITH WI-FI
33-00096—01
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