
VisionPRO® Series with RedLINK
Installation Guide
TM
™
Wired Directly to Equipment
Dual Powered - C Wire or Battery
(C wire or Wire Saver required to use RedLINK accessories)
OR
RedLINK to Equipment Interface Module
TM
2 Wires for Power or
Battery Only (no wires)
OR
RedLINK to TrueZONE Wireless Adapter
TM
2 Wires for Power or
Battery Only (no wires)

Reference to key features
* Password is the date code.
Current display. Underlined label
signifies the current display.
Mode control buttons. Use to change
settings for Fan or System Heat/Cool.
Menu. Select options to: set schedules,
view equipment status, change IAQ
settings, access installer options*, etc.
Current status. Shows system mode
(heat/cool), outdoor temperature and
humidity (with optional outdoor sensor).
Current schedule. Shows desired
temperature and schedule status.
Indoor conditions. Shows indoor
temperature and humidity.
Current Time.
Alert Light. On when alert
message is active or system is set
to Em Heat. Flashes for battery-only
power; on continuous for 24 VAC.
microSD Card Port. Use card
to load settings and dealer
information.
Getting started
Follow these basic steps to install this thermostat,
link it with the wireless accessories, and set
installer options.
Installing the thermostat
1
Powering optional RedLINK accessories
2
Performing initial setup
3
Finding your password (Date Code)
4
• To add or remove RedLINK accessories
• To make changes to Installer Setup
• To perform an Installer Test
2
RoHs Compliant
Conformité RoHs
Assembled in Mexico
Assemblé au Mexique
1324
1
TH8321R1001
Residential/Résidentiel
1-800-468-1502
http://yourhome.honeywell.com
Commercial/Commerciale
1-888-245-1051
Thermostat (back view)
RoHs Compliant
Conformité RoHs
Assembled in Mexico
Assemblé au Mexique
1324
1
TH8321R1001
Residential/Résidentiel
1-800-468-1502
http://yourhome.honeywell.com
Commercial/Commerciale
1-888-245-1051
http://customer.honeywell.com
Honeywell, Golden Valley, MN 55422
Password
(Date Code)
http://customer.honeywell.com
Honeywell, Golden Valley, MN 55422

1
Installing the thermostat
NOTE: For best RedLINK
performance, mount thermostats at
least 2 feet apart.
1.1 Separate wallplate from thermostat.
Press button on top and pull to
remove the wallplate.
1.2 Mount wallplate as shown.
Mount new wallplate using screws
and anchors included with the
thermostat.
Drill 3/16-in holes for drywall.
Drill 7/32-in holes for plaster.
Button
Wallplate
Thermostat
Wallplate
(back view)
S1
C
K
C
R
R
U1
U1
U2
U2
S1
S1
S1
W
O/B
Y
Y
G
G
AUX
W2
-E
Y2
Y2
L/A
A
1.3 Connect power.
1.3a Insert supplied AA alkaline
batteries for primary or backup
power.
NOTE: When the thermostat is NOT
used with the Equipment Interface
Module or the TrueZONE Wireless
Adapter, a C wire is required for
RedLINK.
1.3b For 24VAC primary power,
connect common side of
transformer to C terminal.
3
Thermostat (back view)
CONVENTIONAL
C
K
RC
R
U1
U1
U2
U2
HEAT PUMP
S1
S1
W
Y
G
W2
Y2
A
S1
S1
O/B
Y
G
AUX
-E
Y2
L/A

1.4 Wire the thermostat.
REMOVE DURING
INSTALLATION
Is the thermostat wired directly to
the equipment?
• If the thermostat is wired directly to
the equipment:
a Refer to the table and wiring
diagrams on the next page.
b Turn on 24VAC NOW.
24VAC (C wire) is required to
connect RedLINK accessories.
• If the thermostat is used with an
Equipment Interface Module or
TrueZONE Wireless Adapter,
power the thermostat using Rc and
C terminals or with batteries.
NOTE: The relay outputs and inputs
on the thermostat do not function
when used with an Equipment
Interface Module or TrueZONE
Wireless Adapter.
C
K
RC
R
U1
U1
U2
U2
C
K
RC
R
U1
U1
U2
U2
CONVENTIONAL
HEAT PUMP
CONVENTIONAL
HEAT PUMP
S1
S1
S1
S1
O/B
W
Y
Y
G
G
AUX
W2
-E
Y2
Y2
A
L/A
S1
S1
S1
S1
O/B
W
Y
Y
G
G
AUX
W2
-E
Y2
Y2
A
L/A
1.5 Remove coin cell battery tab
1.5a Remove tab to activate coin
cell battery.
NOTE: Coin cell battery saves time
and date during a power loss.
1.6 Mount thermostat on wallplate.
Align thermostat at bottom and
snap into place as shown.
4
Coin
cell
battery
tab
Thermostat
INSTALLATION
REMOVE DURING
Wallplate