Honeywell TH8321 User Manual

PRODUCT DATA

68-0280-01

® U.S. Registered Trademark
© 2011 Honeywell International Inc.
All Rights Reserved

VisionPRO™ 8000 Touchscreen

Programmable Thermostat

APPLICATION

The VisionPRO 8000 Touchscreen Programmable Thermostat

is an effortless, 7-Day programmable thermostat that provides

universal system compatibility, precise comfort control and is

easy-to-program.

The TH8110 Thermostats provide temperature control for gas,

oil, electric and heat pumps for 1 heat, 1 cool systems.

The TH8320 Thermostats provide temperature control for gas,

oil, electric and heat pumps for up to 3 heat, 2 cool systems

including dual fuel operation.

The TH8321 Thermostats provide temperature control for gas,

oil, electric and heat pumps for up to 3 heat, 2 cool systems

including dual fuel operation plus dehumidification control.

FEATURES

• Large, clear display with backlight shows the current

and set temperature and time—even in the dark.

• Menu-driven programming make setup effortless.
• Beautiful ergonomic design is smart and sophisticated

to match your customers’ lifestyle.

• Touchscreen interaction
• Real-time clock keeps time during power failures and

automatically updates to daylight savings.

• "Saving Changes" notification lets you know when the

schedule changes have been saved.

• Change/check reminders let you know when to service

or replace filters or batteries.

• Various Hold options allow you to override the

program schedule, as desired.

• Speedy same-schedule programming—no need to

copy multiple days.

• Armchair programming allows you to remove the

thermostat from the wall for programming.

• Programmable fan offers increased air quality when

combined with a Honeywell whole-house air cleaner.

Contents

Application/Features..........................................................1

Specifications/Ordering Information ..................................2

Installation .........................................................................4

Wiring ................................................................................5

Power the Thermostat .......................................................11

Installer Setup ...................................................................15

Installer System Test .........................................................20

Operation...........................................................................21

Programming.....................................................................23

Troubleshooting.................................................................38