White Rodgers 1F98EZ-1421, 1F98EZ-1441 User Manual
FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY BEFORE
INSTALLING OR OPERATING THIS CONTROL COULD CAUSE PERSONAL
INJURY AND/OR PROPERTY DAMAGE.
APPLICATIONS
1F98EZ-1421, -1441 Easy Install
For up to 4 Stages Heat and 2 Stages Cool
INSTALLATION INSTRUCTIONS
Configuration
Options
Single Stage Gas, Oil, Electric, Heat Only, Cool
Multi Stage Gas, Oil, Electric, Heat Only, Cool
Heat Pump Single or Two Compressor Systems
Heat Pump
with Dual Fuel
Applications Maximum
Only or Heat Cool Systems
Only or Heat Cool Systems
with up to 2 Stages of Aux / Em Heat
Single or Two Compressor Systems
with up to 2 Stages of Fossil fuel
Heat
Stages
1/1
2/2
4/2
4/2
1F98EZ-1421, -1441 System
12” Touchscreen User Interface
1F98-1491
SPECIFICATIONS
Electrical Rating:
Input-Hardwire ................................................... 20 to 30 VAC
Terminal Load ........................................................... 1.0A per terminal, 2.5A maximum all terminals combined
Setpoint Range ......................................................... 45° to 99°F (7° to 37°C)
Differential (Single Stage) ......................................... Heat 0.6°F; Cool 1.2°F
Differential (Multi-Stage) ........................................... Heat 0.6°F; Cool 1.2°F
Differential (Heat Pump) ........................................... Heat 1.2°F; Cool 1.5°F
Operating Ambient .................................................... 32°F to +105°F (0° to +41°C)
Operating Humidity ................................................... 90% non-condensing max.
Shipping Temperature Range ................................... -40° to +150°F (-40° to +65°C)
Dimensions Interface ................................................ 4-1/2”H x 6”W x 1-1/4”D
Dimensions Control .................................................. 5-1/2”H x 5-3/4”W x 1-1/2”D
Equipment Control
40C01-1400
CAUTION
!
To prevent electrical shock and/or equipment damage,
disconnect electric power to system at main fuse or
circuit breaker box until installation is complete.
Index Page
Installation 2
Wiring Connections 2
Wiring Diagrams 3
Installer Configuration Menu 5
Troubleshooting 8
www.white-rodgers.com
www.emersonclimate.com
ATTENTION: MERCURY NOTICE
This product does not contain mercury. However, this
product may replace a product that contains mercury.
Mercury and products containing mercury must not be
discarded in household trash. Do not touch any spilled
mercury. Wearing non-absorbent gloves, clean up any
spilled mercury and place in a sealed container. For proper
disposal of a product containing mercury or a sealed
container of spilled mercury, place it in a suitable shipping
container. Refer to www.white-rodgers.com for location to
send product containing mercury.
PART NO. 37-7215C
Replaces 37-7215B
1110
1
INSTALLATION
WARNING
!
Thermostat installation and all components of the
control system shall conform to Class II circuits per
the NEC code.
Control 40C01-1400
Control can be mounted on wall or equipment. Control has
four mounting holes. Wall anchors and screws are provided
for mounting on drywall. Drill 3/16 hole for drywall mounting.
If mounting on equipment Do Not Mount inside HVAC
equipment. Only mount on outside of HVAC equipment.
WIRING CONNECTIONS
Refer to equipment manufacturers’ instructions for specific
system wiring information. After wiring, see CONFIGURATION
section for proper thermostat configuration.
Connect wires as appropriate for HVAC systems (see wiring
diagrams). To power control, connect the 24 V system hot to
R terminal and common to C on left side of control labelled
“Power”. On initial power up the 7 segment LED on the
Thermostat / Interface 1F98-1491
1) Pull the thermostat/interface off the base. Forcing or
prying on the thermostat will cause damage to the unit.
2) Place base over hole in wall and mark mounting hole
locations on wall using base as a template.
3) Move base out of the way. Drill mounting holes. If you are
using existing mounting holes and the holes drilled are
too large and do not allow you to tighten base snugly, use
plastic screw anchors to secure the base.
4) Fasten base snugly to wall using mounting holes and two
mounting screws. Leveling is for appearance only and will
not affect thermostat operation.
5) Connect wires to terminal block on base (see Figure 1).
6) Push excess wire into wall and plug hole with a fire
resistant material (such as fiberglass insulation) to prevent
drafts from affecting thermostat operation.
7) Carefully line the thermostat up with the base and snap
into place.
control will display E (for communication error) until interface
is connected. With power supplied to control, it is normal for
the green system LED to flash periodically.
With interface connected, the 7 segment LED will display
C to indicate the two devices have initiated communication.
C will disappear after approximately 30 seconds when
communication is established.
BLUE EASY INSTALL INPUTS/OUTPUTS
Easy Install 40C01 Operational / Functional
Control Terminals
R ......................................... 24 VAC Transformer
RC ....................................... 24 VAC Cooling Transformer
RH ....................................... 24 VAC Heating Transformer
C ......................................... 24 V Transformer Common
W/E ..................................... Heating Stage 1
HP Aux/Em Heat Stage 1
W2 ....................................... Heating Stage 2
HP Aux/Em Heat Stage 2
Y .......................................... Compressor Stage 1
Y2 ........................................ Compressor Stage 2
G .......................................... Fan Relay
L Terminal ............................ System Monitor Compatible
with Comfort Aler t Diagnostics
O/B Terminal ........................ Changeover Relay Heat Pump
Fig. 1 - Thermostat / Interface to control wiring
R
1
2
Easy Install 40C01 Operational / Functional
Control Terminals
DHM .................................... Dehumidification Relay / Connection
DHM2 .................................. Dehumidification Relay / Connection
HM ....................................... Humidification Relay / Connection
HM2 ..................................... Humidification Relay / Connection
R .......................................... 24 VAC to Interface
1........................................... Data to/from Interface
2........................................... Data to/from Interface
C .......................................... 24 VAC Common to Interface
RJ11 .................................... Field configuration hook-up with RJ11
equipped configuration tool
+ .......................................... Voltage to Outdoor Sensor
S .......................................... Outdoor Sensor Temperature Signal
- ........................................... Voltage to Outdoor Sensor
R
1
2
C
C
40C01Control1F98 Thermostat
2
WIRING DIAGRAMS
Fig. 2 - Typical Connection of a Single Stage or Multi-Stage System
*
SYSTEM R RH RC C W/E W2 Y Y2 G O/B L
Single
Stage
Multi
Stage
*Factory installed jumper between RH and RC
Fig. 3 - Typical Connection of Heat Pump System up to 4 Stages Heat / 2 Stages Cool
SYSTEM R RH RC C W/E W2 Y Y2 G O/B L
Heat
Pump
24 VAC
Powe r
24 VAC
Powe r
24 VAC
Powe r
24 VAC
Powe r
for Heating
24 VAC
Powe r
*
24 VAC
Powe r
for
Heating
24 VAC
for Cooling
24 VAC
24 VAC
Powe r
for
Cooling
Powe r
Powe r
Common
Required
24 VAC
24 VAC
Common
Required
Aux /
Em
stage
Heat N/A Cool N/A Fan N/A System
Heat
mode
stage
Aux /
Em
st
1
st
1
nd
2
Heat
mode
nd
2
stage
1st stage
Compressor
Cool
mode
st
1
stage
2nd stage
Compressor
Cool
mode
nd
2
stage
Fan Changeover
Valve
stage
Monitor
System
Monitor
NEUTRAL
24 VAC
HOT
120 VAC
CLASS II
Transformer
*Factory installed jumper between RH and RC
Fig. 4 - Typical Connection of Heat Pump / Dual Fuel System up to 4 Stages Heat / 2 Stages Cool
*
SYSTEM R RH RC C W/E W2 Y Y2 G O/B L
Heat
Pump
*Factory installed jumper between RH and RC
24 VAC
Powe r
24 VAC
Powe r
for
Heating
24 VAC
Powe r
for
Cooling
24 VAC
Common
Required
Fossil
Fuel
st
1
stage
Fossil
Fuel
nd
2
stage
1st stage
Compressor
2nd stage
Compressor
Fan Changeover
Valve
System
Monitor
NEUTRAL
24 VAC
HOT
NEUTRAL
24 VAC
HOT
120 VAC
CLASS II
Transformer
120 VAC
CLASS II
Transformer
3
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