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WR-7255-4E
St. Louis, Missouri Markham, Ontario
314-553-3600 905-948-3411
www.white-rodgers.com
www.emerson.com
The Emerson logo is a trademark and
a service mark of Emerson Electric Co.
Dimensions
5.1"W x 3.9"H x 1.2"D
Electrical Specifications
Rating
0 to 30 VAC, 50/60 Hz or DC
0.05 to 1.5 Amps (load per terminal)
2.5 Amps maximum load
(all terminals combined)
Single Stage/Heat Pump/
Multi-Stage Systems
Gas, Oil, Electric
Millivolt Systems
2 or 3 Wire Hydronic Zone Valve
Thermal Specifications
Setpoint Temperature Range:
45° to 90°F (7° to 32°C)
Rated
Differential: 0.4° to 1.7°F
with adjustable anticipation
Operating Ambient Temperature:
32° to 105°F (0° to 40°C)
Operating Humidity Range:
90% non-condensing maximum
Shipping Temperature Range:
-4° to 150°F (-20° to 65°C)
Accessories
Wall Plate F61-2634 (6.5"W x 5"H)
(Included with all models)
Thermostat Guard F29-0231
(For additional guard options refer to
White-Rodgers catalog at
www.white-rodgers.com)
For Additional Information
Visit www.white-rodgers.com
Blue 4" Universal Features
Large, 4-square-inch blue display
with easy-to-see characters
Active protection for systems with
Comfort Alert
™
CA2 module
compressor diagnostics
Keypad lockout
Quick one-button programming
(See Automatic Schedule section in
installation instructions)
Configures as manual heat/cool,
auto changeover, heat only or cool only
Exclusive Cool Savings
™
feature
saves energy during peak A/C
demand periods
Adjustable setpoint temperature limits
Hydronic 2 or 3 wire zone valve
applications
Battery power monitor
5-year warranty
Programming
Choice of 7, 5/1/1, 5/2 or Ø day
programmable
(1F85-0477, 1F85-0422,
1F85ST-0422)
4 time and 4 temperature settings
per program (heat & cool)
Energy savings up to 33%
Pre-programmed software
simplifies time and
temperature programming
Display
Large, 4-square-inch LCD with
improved contrast for easier reading
Lighted display for easier
low-light viewing
Comfort & Convenience
Optional minimum and maximum
temperature configurable
Permanent program retention
during power loss
Indefinite setpoint Hold
Air filter change indicator
(optional)
Simple “set-up” menu to
activate optional features
Temporary temperature
override two-hour minimum
or until next program period
(1F85-0477, 1F85-0422, 1F85ST-0422)
Soft-touch keypad
Display temperature
recalibration (+/- 4°)
Performance
Dual-Powered…choice of
battery-powered or hardwired,
for all applications –
2 AA batteries included
Selectable Energy
Management Recovery
(1F85-0477, 1F85-0422, 1F85ST-0422 )
Meets California Building Code,
Title 24
(1F85-0477, 1F85-0422,
1F85ST-0422)
Fast (FA), medium (ME) or
slow (SL) heating and cooling
cycle anticipation
Easy-to-wire terminal block
Compressor lockout protection
Millivolt compatible
Electric heat option
BLUE
™
4"Universal Thermostats
Terminal Designations
RC RH
W/ E
G
Y
W2
Y2
O/B
6 L
C
1F83-0471/1F83-0422
Non-Programmable Only
1F85-0477/1F85-0422/1F85ST-0422
Programmable 7, 5/1/1, 5/2 or Ø Day Option
• For Single Stage, Multi-Stage and Heat Pump Systems • Programmable 7, 5/1/1, 5/2 or Ø Day and Non-Programmable • Hardwired or Battery Powered
2/2
2/2
2/2
2/2
2/1
2/1
3/2
2/1
Single
Stage
Multi-
Stage
Heat
Pump
Stages
Heat/Cool
by System
Program
Options
Model
Number
Programs Model Selectable Performance Features
Comfort and Convenience Features
Applications
Power Source
1/1
1/1
1/1
1/1
1F85-0422
Comfort Alert
3 Wire Zone
Audible
Feedback
Millivolt
Programmable
Fan
Energy Mgt.
Recovery
Dual Fuel
Option
Keypad
Lockout
Temperature
Limits
Auto
Changeover
Gas/Oil/
Electric
Indoor
Remote
Sensor
Cool
Savings™
Lighted
Display***
Daylight
Savings
Adjustment
Ignition
Module Reset
Permanent
Memory
Outdoor
Remote
Sensor
5/1/1, 5/2, Ø B,H
✓✓ ✓ ✓✓✓ ✓✓✓✓✓
5/1/1, 5/2, Ø
1F85ST-0422
B,H
✓✓ ✓ ✓✓✓ ✓✓✓✓✓
Ø 1F83-0471
B,H
✓✓ ✓✓✓ ✓✓✓✓
Ø 1F83-0422
B,H
✓✓ ✓✓✓ ✓✓✓✓
2/2 3/21/1
7, 5/1/1, Ø B,H
✓
✓
✓
✓
✓✓ ✓ ✓
✓
✓
✓
✓✓✓ ✓✓✓✓✓
1F85-0477
B =Battery, H =Hardwired *** Optional Continuous Display Light w/Hardwire Connection