White Rodgers 1HDEZ-1521 Specification
™
Inspire
Universal 4-Wire Color Thermostat System
Upgrade single stage applications to premium high-efficiency systems
(staging, heat pump or heat pump with dual fuel) – using existing 4 wires
1HDEZ-1521
Up to 4H/2C with Dual Fuel Option
Humidification/Dehumidification
THIN PROFILE
SHARP DISPLAY
Includes User Interface, Equipment Control and Configuration Tool
User Interface
• USB port to quickly upload your favorite Installation Settings,
Programs and personalized Company Contact Information
• 5/8" Thin profile with
vibrant color display
• 7-Day or Non-Programmable
• Humidification and
Dehumidification control
• Heat Pump dual fuel control
option by adding an outdoor
temperature sensor (F145-1378)
Upload pre-configured thermostat settings and programs on every job.
Create custom messages for your seasonal maintenance and service calls!
Equipment Control
• Easy Install and Setup to upgrade any standard system —
without running new wires
• Color-coded system signal LED's for accurate installation,
set-up confirmation and troubleshooting
User Interface
(flash drive not included)
• Reusable configuration and check-out tool connects user interface
to equipment control at the furnace for fast configuration,
troubleshooting and 100% correct installation assurance
• Eliminates multiple trips up and down the stairs
Built-In USB
Programming Port
Equipment Control
5-Year Warranty
ACCURACY
OPTIMUM COMFORT
AND PERFORMANCE
• Quick Connect terminals for faster installation
Simple to Setup — Re-Use Programming Tools On Every Job!
Inspire
™
Universal 4-Wire Color Thermostat System
1HDEZ-1521
Universal
Upgrade single stage applications to premium high-efficiency systems
(staging, heat pump or heat pump with dual fuel) – using existing 4 wires
Contractor Favorite Features
Easy Install and Setup to upgrade any standard
system — without running new wires
Quick Connect terminals for faster installation
Color-coded system signal LED's for accurate
installation, set-up confirmation and
troubleshooting
Reusable configuration and check-out tool
connects user interface to equipment control at
the furnace for fast configuration, troubleshooting
and 100% correct installation assurance
Eliminates multiple trips up and down the stairs
USB port to quickly upload your favorite Installation
Settings, Programs and personalized Company
Contact Information
Add an outdoor sensor for Heat Pump Dual Fuel
control — to switch from Heat Pump to Furnace,
based on selected outdoor temperature
Humidification and
Dehumidification Control
Powered or dry contact humidifier /
dehumidifier terminals for integrated
or independent humidity components
Display
Sharp, color display
Lighted display for easier low-light
viewing
Optional continuous display light
Large, easy-to-read character size
Energy Performance
Meets California Building Code, Title 24
Energy Aware compliant
Energy savings up to 33% using convenient
heating and cooling program schedule
Equipment Control
Terminal Designations*
Up to 4H/2C with Dual Fuel Option
Humidification/Dehumidification
Comfort & Convenience
Choice of 7-Day or Non-Programmable
Easy temperature hold or temporary temperature override
Easy to adjust humidification and dehumidification settings
Intuitive menu-driven setup, programming and operation,
with audio prompt to confirm entries
Auto heat/cool changeover option – automatically switches
between heating and cooling programs
Room temperature display can be recalibrated up to +/- 5° F
Maintains room temperature to within +/- 1° F
Setpoint temperature limits
Furnace filter change reminder
Humidifier pad change reminder
Permanent program retention during power loss
Compressor lockout protection
Thermostat
Terminal Designations*
C
RH
RC
* See installation instructions or www.white-rodgers.com for terminal descriptions
W/E
W2 Y
Y2
G
Dimensions
5.8" W x 5.5" H x 1.4" D (control)
6.1" W x 3.3" H x 0.6" D (interface)
Thermal Specifications
Setpoint Temperature Range:
45° to 99° F (7° to 32° C)
Rated Differential:
Heat 0.6° F; Cool 1.2° F
Heat 1.2° F; Cool 1.2° F (Heat Pump)
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 65° C)
Single
MultiStage
Stages
2/2 4/2
Heat
Pump
Stage
Heat/Cool
by System
1/1 7, Ø
H = Hardwired
Programs
Program
Options
Model
Model
Number
1HDEZ-1521
L + S – HM
O/B
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
Applications
3 Wire Zone
Gas/Oil/Electric
✓
Millivolt
Humidity Control
HM2 DHM
(H) Humididy
Power Source
(D) Dehumidify
HH, D
DHM2
R 1 2 C
Accessories
Outdoor Remote Sensor
F145-1378
Thermostat Guards
Clear – F29-0198
Metal – F29-0220 (solid base)
F29-0222 (ring base)
For Additional Information
Visit www.white-rodgers.com
Selectable Performance Features
Fan
Recovery
Energy Mgt.
Programmable
Auto Changeover
✓
✓
✓
Outdoor
Keypad Lockout
Dual Fuel Control
1
Comfort and
Convenience Features
Setpoint
Remote Sensor
Temperature Limit
✓✓
C
2
Lighted Display
Audible Feedback
✓
✓
R
Memory
Permanent
✓
Saint Louis, Missouri
314-553-3600
www.white-rodgers.com
www.emersonclimate.com
Markham, Ontario
905-948-3411
The Emerson logo is a trademark and
a service mark of Emerson Electric Co.
WR-8150
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