White Rodgers 1F94-71 User Manual
WHITE-RODGERS
CAUTION
!
WARNING
!
Operator: Save these instructions for future use!
FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY
BEFORE INSTALLING OR OPERATING THIS CONTROL COULD CAUSE
PERSONAL INJURY AND/OR PROPERTY DAMAGE.
This wall-mounted, low voltage thermostat maintains
room temperature by controlling the operation of multistage systems. Use this thermostat for applications
requiring up to three stages of heat and up to two stages
of cool. Indicator lights show the system status. The user
may program up to four time/temperature settings per 24
hour period. The thermostat stores programs for seven
independent days. The thermostat will store both heating
and cooling programs simultaneously. A 9 volt Energizer
battery will maintain the stored program for approximately
one week, if incoming power should fail. If power failure
is extensive and the program is lost, after power restoration, the thermostat will automatically maintain a factory
preprogrammed heating temperature of 64°F or a cooling
temperature of 82°F.
1F94-71
Multi-stage Electronic Digital Thermostat
INSTALLATION INSTRUCTIONS
DESCRIPTION
®
W H I T E - R O D G E R S
DIGITAL COMFORT SET
PRECAUTIONS
II
If in doubt about whether your wiring is millivolt, line, or low
voltage, have it inspected by a qualified heating and air
conditioning contractor, electrician, or someone familiar
with basic electricity and wiring.
Do not exceed the specification ratings.
CONTENTS
Description......................................................... 1
Precautions........................................................ 1
Specifications..................................................... 2
Installation.......................................................... 2
New Installation
Select Thermostat Location
Route Wires to Location
Replacement Installation
Remove Old Thermostat
Attach Subbase to Wall
Attach Thermostat to Subbase
Operation ........................................................... 5
System Configuration
Set Option Switches
Check Thermostat Operation
Fan Operation
Heating System
Cooling System
Troubleshooting
All wiring must conform to local and national electrical
codes and ordinances.
This control is a precision instrument, and should be
handled carefully. Rough handling or distorting components could cause the control to malfunction.
To prevent electrical shock and/or equipment
damage, disconnect electric power to system, at
main fuse or circuit breaker box, until installation
is complete.
Do not use on circuits exceeding specified voltage. Higher voltage will damage control and
could cause shock or fire hazard.
Do not short out terminals on gas valve or primary control to test. Short or incorrect wiring will
burn out thermostat and could cause personal
injury and/or property damage.
WHITE-RODGERS DIVISION
EMERSON ELECTRIC CO.
9797 REAVIS ROAD
ST. LOUIS, MISSOURI 63123-5398
R
Printed in U.S.A.
PART NO. 37-4744B
Replaces 37-4744A
9310
SPECIFICATIONS
THIS CONTROL IS DESIGNED FOR USE WHERE BOTH SIDES OF THE TRANSFORMER ARE PRESENT
TO THE THERMOSTAT (both the hot and common sides of the 24vAC end of the transformer.)
ELECTRICAL DATA
Electrical Rating:
20 to 30v AC 50/60 Hz.
0.01 to 1.5 Amps (Load per terminal)
2.5 Amps Maximum Total Load (All terminals
combined)
Anticipation:
Heating 4 to 40
Cooling 4 to 40 Reference Values
Auxiliary 4 to 40
}
STAGING DATA
Up to three heating stages
Up to two cooling stages
INSTALLATION
NEW INSTALLATION
YOU SHOULD PROGRAM THE THERMOSTAT WITH
BATTERY INSTALLED BEFORE ATTACHING ON
SUBBASE. SEE OPERATION GUIDE FOR PROGRAMMING INSTRUCTIONS.
SELECT THERMOSTAT LOCATION
Proper location insures that the thermostat will provide a
comfortable building temperature. Observe the following
general rules when selecting a location:
1. Locate thermostat about 5 ft. above the floor.
2. Install thermostat on a partitioning wall, not on an
outside wall.
3. Never expose thermostat to direct light from lamps,
sun, fireplaces or any temperature radiating equipment.
4. Avoid locations close to windows, adjoining outside
walls, or doors that lead outside.
5. Avoid locations close to air registers or in the direct
path of air from them.
6. Make sure there are no pipes or duct work in that part
of the wall chosen for the thermostat location.
7. Never locate thermostat in a room that normally
warmer or cooler than the rest of the building.
8. Avoid locations with poor air circulation, such as
behind doors or in alcoves.
THERMAL DATA
Setpoint Temperature Range:
40° F to 99°F (4°C to 37° C)
Operating Ambient Temperature Range:
32°F to 105°F
Operating Humidity Range:
0 to 90% RH (non-condensing)
Shipping Temperature Range:
-40°F to 150°F
ACCESSORIES
Remote Sense Kit W. R. Part No. F145-1049
Thermostat Guard W. R. Part No. F29-0198 (clear) or
F29-0238 (opaque)
ROUTE WIRES TO LOCATION
All wiring must conform with local and national electrical
codes and ordinances.
1. Probe for obstructions in partition before drilling 1/2"
hole in wall at selected location. Take up quarter
round and drill a small guide hole for sighting (see fig.
1). From basement, drill 3/4" hole in partition floor next
to guide hole. In buildings without basements, drill 1/
2" hole through ceiling and into partition from above
(see fig. 1).
2. Through this hole drop a light chain, or 6" chain
attached to a strong cord. nag cord in basement with
hooked wire. In buildings without basements, drop
cord through hole in ceiling and down partitioning;
snag cord at the thermostat location.
3. Attach thermostat wires to cord and pull wires through
hole in wall so that 6" of wire protrudes.
1/2" hole for
thermostat wire
Stout cord with 6"
chain attached
Approximately
Baseboard
strip moulding
Quarter round
removed
1/4" guide hole
for sighting
5 feet from floor
3/4" hole in floor of partition
Hooked wire for snagging chain
Figure 1. Routing thermostat wires
2
REPLACEMENT INSTALLATION
REMOVE OLD THERMOSTAT
1. Shut off electricity at the main fuse box until installation is complete. Verify power is off with a voltmeter.
2. Remove the front cover of the old thermostat. With
wires still attached, remove wall plate from the wall.
3. If the old thermostat has a wall mounting plate,
remove the thermostat and the wall mounting plate as
an assembly.
4. Use the Cross Reference Guide to find the thermostat
type you are replacing.
5. Identify each wire attached to the old thermostat
using the labels enclosed with the new thermostat. Record the identification of the wire on the
corresponding blank in Table 2.
6. Disconnect the wires from old thermostat one at a
time. Pull at least 6 inches of wire out of the wall. DO
NOT LET WIRES FALL BACK INTO THE WALL.
7. Install new thermostat using the following procedures.
PULL STRAIGHT OUT
Figure 2. Removing thermostat from subbase
TABLE 1. WIRE IDENTIFICATION LABELS
1
G
G
1
9
Y1
Y1
9
2
C
C
2
10
Y2
Y2
10
3
L
L
3
11
W1
W1
11
4
R
R
4
12
W2
W2
12
5
O
O
5
13
W3
W3
13
6
B
B
6
14
S1
S1
14
7
E1
E1
7
15
S2
S2
15
8
E2
E2
8
16
S3
S3
16
ATTACH SUBBASE TO WALL
1. Remove the packing material from the thermostat.
Place the fingers of one hand on the center top and
bottom portion of the thermostat. Grasp the subbase
in the other hand on the top and bottom center, and
gently pull straight out (see fig. 2). The thermostat has
pin and socket connectors. Forcing or prying on the
thermostat will cause damage to the unit.
TABLE 2. TERMINAL REFERENCE
LABEL
NUMBER
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8) E2 Emergency Heat Relay (continually
(9)
(10)
(11)
(12)
(13)
NEW THERMOSTAT
TERMINAL
DESIGNATION FUNCTION
G
C
L
R
O
B
E1
Y1
Y2
W1
W2
W3
Fan Output
Transformer 24v AC Common
Malfunction Light
Transformer 24v AC Hot
Changeover Output (cool)
Changeover Output (hot)
Emergency Heat Relay (cycles on first
stage in emergency mode)
energized in emergency mode)
Stage 1 Cool
Stage 2 Cool
Stage 1 Heat (compressor)
Stage 2 Heat (compressor)
Stage 3 Heat (auxiliary)
NOTE
THIS THERMOSTAT REQUIRES BOTH THE HOT AND
COMMON SIDES OF THE 24vAC TRANSFORMER TO
BE PRESENT TO THE THERMOSTAT FOR OPERATION.
OLD THERMOSTAT
TERMINAL
DESIGNATION
3
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