White Rodgers 1F98EZ-1421 Emerson Blue Easy Install Universal 4-Wire Thermostat Solution Specification Sheet

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www.white-rodgers.com
www.emersonclimate.com
Markham, Ontario
905-948-3411
Saint Louis, Missouri
314-553-3600
The Emerson logo is a trademark and
a service mark of Emerson Electric Co.
Programming
Universal – installer selectable 
system applications 
Choice of 7-day or non-programmable 
(installer selectable)
4 time and 4 temperature settings per 
program (2 setbacks) heat and cool
Energy savings up to 30%
Display
Large, 12-square-inch touchscreen display
Lighted display for easier low-light viewing
Optional continuous display light
Larger, easy-to-read character size
Clean, uncluttered touchscreen display 
provides easier navigation
Performance
Selectable Energy Management Recovery
Meets California Building Code, 
Title 24 Non PCT
Fast (FA) or slow (SL) heating cycle 
anticipation
Exclusive “Call for Service” 
diagnostic indicator
Compressor lockout protection
Dual Fuel Heat Pump Control 
Dual fuel applications require the use 
of an outdoor remote sensor.
Humidification and 
Dehumidification Control 
Flexibility for system integrated control 
and/or independent humidification and 
dehumidification.
Comfort & Convenience
Humidification and dehumidification control
Intuitive menu-driven setup, programming 
and operation, with audio prompt to confirm 
touchscreen entries
Permanent program retention during power loss
Indefinite setpoint Hold or temporary 
temperature override
Auto heat/cool changeover option – 
automatically switches between 
heating and cooling programs
Heating and cooling, heating only or 
cooling only configuration
Setpoint temperature limits
UV lamp change reminder
Furnace filter change reminder
Humidifier pad change reminder 
Maintains room temperature to within +/- 1˚F
Room temperature display can be recalibrated 
up to +/- 5˚F
*See installation instructions or www.white-rodgers.com for terminal descriptions
Equipment Control Terminal Designations*
Dimensions
5.8" W x 5.5" H x 1.4" D (control) 
5.9"W x 4.6"H  x 1.2"D (interface)
Accessories
Outdoor Remote Sensor
 F145-1378 
Thermostat Guards
 
Clear – F29-0198
 
Metal – F29-0220 (solid base)
 
   
   F29-0222 (ring base)
Wallplates
 
F61-2600 (8.1"W x 5.4H")
 
F61-2634 (6.5"W x 5"H)
For Additional Information
Visit www.white-rodgers.com
Thermal Specifications
Setpoint Temperature Range:
45˚ to 99˚F (7˚ to 37˚C)
Rated Differential: 
Heat 0.6˚F; Cool 1.2˚F
Operating Ambient Temperature:
32˚ to 105˚F (0˚ to 41˚C) — Interface
-30˚ to 150˚F (-34˚ to 66˚C) — Control
Operating Humidity Range:
90% non-condensing maximum
Shipping Temperature Range:
-40˚ to 150˚F (-40˚ to 66˚C)
Electrical Specifications
Rating
Input Hardwire: 20 to 30 VAC, 
NEC Class II, 50/60 Hz or DC
1.5 Amps (load per terminal)
2.5 Amps maximum load (all terminals combined)
Standard Systems
Single Stage gas, oil, electric
Single Stage heat pump
Multi-Stage gas, oil, electric
Multi-Stage heat pump
WR-1627-1
Universal 4-Wire Thermostat Solution
Blue
 
Easy Install
 4H/2C
1F98EZ-1441
Universal includes Outdoor Remote Sensor
1F98EZ-1421
Universal
Contractor Branding
Imprint thermostat with your contact information. 
See your wholesaler or visit white-rodgers.com
RC
RH
W2
Y
W/E
G
Y2
O/B
L
6
+
S
DHM
DHM2
HM
C
Both models are Dual Fuel Capable – 1F98EZ-1441 comes with Outdoor Remote Sensor  (F145-1378)
2/2
4/2
Single
Stage
Multi-
Stage
Heat
Pump
Stages
Heat/Cool
by System
Program
Options
Programs
Selectable Performance Features
Comfort and 
Convenience Features
H = Hardwired
Applications
Power Source
1/1
2/2
4/2
1/1
7, Ø
7, Ø
Model
Number
Model
1F98EZ-1421
1F98EZ-1441
H
H
Gas/Oil/Electric
Auto Changeover
3 Wire Zone 
Dual Fuel Control
Keypad Lockout 
Lighted Display
Audible
Feedback
Millivolt
Humidity Control
Programmable
Fan
Energy Mgt.
Recovery
Ignition
Module Reset
Permanent
Memory
Includes Outdoor
Remote Sensor
HM2