White Rodgers 1F92W-51 Original operating instructions

Multi-stage/Heat Pump Electronic
Digital Thermostat
WHITE-RODGERS
Operator: Save this booklet for future use!
INSTALLATION &
OPERATION GUIDE 1F92W-51

2
About Your New Thermostat . . .
Your new White-Rodgers Digital Multi-stage/Heat Pump Thermostat uses the technology of a solid-state
microcomputer to provide precise time/temperature control. This thermostat offers you the flexibility to
design heating and cooling programs that fit your needs.
Please read this manual thoroughly before operating or programming your thermostat. If you have
questions, contact us at the address shown on the back cover of this manual.

3
In This Guide . . .
OPERATING YOUR THERMOSTAT ............... 22
PARTS OF THE THERMOSTAT
The Back Of the Thermostat Body
The Display
The Thermostat Buttons
OPERATING FEATURES
PROGRAMMING YOUR
THERMOSTAT........................................... 34
PLANNING FOR YOUR NEEDS
ENTERING YOUR PROGRAM
Set Current Time and Day
Enter Heating Program
Enter Cooling Program
CHECK YOUR PROGRAMMING
QUESTIONS AND ANSWERS........................ 44
YOUR NEW THERMOSTAT’S
FEATURES .................................................. 4
PRECAUTIONS ................................................. 5
THE THERMOSTAT’S SPECIFICATIONS ....... 6
INSTALLING YOUR THERMOSTAT ................ 7
NEW INSTALLATION
Select Thermostat Location
Route Wires to Location
REPLACEMENT INSTALLATION
Remove Old Thermostat
Attach Subbase to Wall
SYSTEM CONFIGURATON
Set Option Switches
CHECK THERMOSTAT OPERATION
Fan Operation
Heating System Operation
Cooling System Operation
LOCKOUT BYPASS OPTION
Compressor Long Term Cycle Protection
Compressor Short Term Cycle Protection

4
YOUR NEW THERMOSTAT’S FEATURES
• Five-day/two-day programming capability
• Simultaneous heat and cool program storage
• Four separate time and temperature settings
per 24-hour period
• Up to 2 stages of heat and up to 1 stage of cool
• Computed Energy Management Recovery
(EMR)
• Automatic changeover (operator selectable)
• Two hour temperature override
• Manual program override (HOLD temperature)
• “Advance Program” button
• Armchair programming capability
• LCD displays continuous setpoint, time, and
room temperature
• Adjustable cycle times
• 9 volt Energizer®alkaline battery backup
• Compressor long term cycle protection
• Compressor short cycle protection
• Blower delay in the cooling cycle
• Preprogrammed temperature control
• Visual prompting during operation
• Programmable blower control
• Temperature range 40°to 99°F
•°F/°C convertibility
• Electric Heat (installer-selectable)

5
PRECAUTIONS
Ifindoubtaboutwhetheryourwiringismillivolt,line,
or low voltage, have it inspected by a qualified
heating and air conditioning contractor, electrician,
orsomeonefamiliarwithbasicelectricityandwiring.
Do not exceed the specification ratings.
All wiring must conform to local and national electri-
cal codes and ordinances.
Thiscontrolisaprecisioninstrument,andshouldbe
handledcarefully.Roughhandlingordistortingcom-
ponents could cause the control to malfunction.
To prevent electrical shock and/or equip-
ment damage, disconnect electric power to
system, at main fuse or circuit breaker box,
until installation is complete.
CAUTION
!
Do not use on circuits exceeding specified
voltage. Highervoltagewilldamagecontrol
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.
WARNING
!

6
THE THERMOSTAT’S SPECIFICATIONS
THIS CONTROL IS DESIGNED FOR USE WHERE BOTH SIDES OF THE TRANSFORMER ARE
PRESENT AT THE THERMOSTAT (both the hot and common sides of the 24 VAC end of the
transformer.)
ELECTRICAL DATA
Electrical Rating:
20 to 30 VAC 50/60 Hz.
0.01 to 1.5 Amps (Load per terminal)
2.5 Amps Maximum Total Load (Allterminals
combined)
Anticipation:
Heating 4 to 40
Cooling 4 to 40
Auxiliary 4 to 40
STAGING DATA
Up to 3 heating stages
Up to 1 cooling stage
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
Thermostat Guard:
W. R. Part No. F29-0198 (clear)
or F29-0238 (opaque)

7
INSTALLING YOUR THERMOSTAT
NEW INSTALLATION
WE RECOMMEND THAT YOU PROGRAM THE
THERMOSTATWITHBATTERY INSTALLED BE-
FOREATTACHINGONSUBBASE. SEEOPERA-
TIONSECTIONFOR PROGRAMMINGINSTRUC-
TIONS.
SELECT THERMOSTAT LOCATION
Proper location insures that the thermostat will
provide a comfortable building temperature. Ob-
serve the following general rules when selecting
a location:
1. Locate thermostat about 5 ft. above the floor.
2. Installthermostatonapartitioningwall,notonan
outside wall.
3. Never expose thermostat to direct light from
lamps,sun,fireplacesoranytemperatureradiat-
ing equipment.
4. Avoid locations close to windows, adjoining out-
side walls, or doors that lead outside.
5. Avoid locations close to air registers or in the
direct path of air from them.
6. Makesuretherearenopipesorductworkinthat
part of the wall chosen for the thermostat loca-
tion.
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.
ROUTE WIRES TO LOCATION
All wiring must conform with local and national
electrical codes and ordinances.
NOTE

8
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(seefig.1).Frombasement,drill3⁄4”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
attachedtoastrongcord.Snagcordinbasement
with hooked wire. In buildings without base-
ments, 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 comes out
of the wall.
Approximately
5 feet from floor
1
⁄
2
” hole for
thermostat wire
Stout cord with 6”
chain attached
Baseboard
strip moulding
1
⁄
4
” guide hole
for sighting
Quarter round
removed
3
⁄
4
” hole in floor of partition
Hooked wire for snagging chain
Figure 1. Routing thermostat wires

9
REPLACEMENT INSTALLATION
REMOVE OLD THERMOSTAT
1. Shutoffelectricityatthemainfuseboxuntil
installation is complete. Verify power is off
with a voltmeter.
2. Remove the front cover of the old thermo-
stat. 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. Usethe CrossReference Guideto findthe
thermostat type you are replacing.
5. Identifyeachwireattachedtotheoldthermo-
stat using the labels enclosed with the new
thermostat (see Table 1). Record the identifi-
cationofthewireonthecorrespondingblank
in Table 2.
TABLE 1. WIRE IDENTIFICATION LABELS
1
G
G
1
9
Y1
Y1
9
2
C
C
2
3
L
L
3
4
R
R
4
5
O
O
5
6
B
B
6
7
E1
E1
7
8
E2
E2
8
10
Y2
Y2
10
11
W1
W1
11
12
W2
W2
12
13
W3
W3
13
14
S1
S1
14
15
S2
S2
15
16
S3
S3
16
6. Disconnectthewires fromoldthermostatone at
a time. Pull at least 6 inches of wire out of the
wall. DO NOT LET WIRES FALL BACK INTO
THE WALL.
7. Installnewthermostatusingthefollowingproce-
dures.

10
TABLE 2. TERMINAL REFERENCE
LABEL
NUMBER
NEW THERMOSTAT
TERMINAL
DESIGNATION FUNCTION
OLD THERMOSTAT
TERMINAL
DESIGNATION
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
(13)
G
C
L
R
O
B
E1
E2
Y1
Y2
W1
W2
W3
Fan Output
Transformer 24 VAC Common
(this terminal not used)
Transformer 24 VAC Hot
Changeover Output (Cooling)
Changeover Output (Heating)
Emergency Heat Relay (cycles on
1st stage in Emergency Mode)
Emergency Heat Relay (continually
energized in Emergency Mode)
Stage 1 Cool
(this terminal not used)
Stage 1 Heat (Compressor)
Stage 2 Heat (Auxiliary)
(this terminal not used)

11
ATTACH SUBBASE TO WALL
1. Remove the packing material from the thermo-
stat. Placethefingers ofonehandon thecenter
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 con-
nectors. Forcing or prying on the thermostat will
cause damage to the unit.
2. Connect wires beneath terminal screws on sub-
base using wiring schematic for your particular
application (see figs. 3 through 6).
3. Place subbase over hole in wall and mark
mounting hole locations on wall using subbase
as a template.
4. Move subbase out of the way. Drill mounting
holes.
5. Fasten subbase loosely to wall, as shown in fig.
3, using two mounting screws. Place a level
againstbottomofsubbase,adjustuntillevel,and
thentighten screws.(Leveling isforappearance
only and will not affect thermostat operation.) If
youareusingexistingmountingholes,orifholes
drilled are too large and do not allow you to
tighten subbase snugly, use plastic expansion
plugs to secure subbase.
6. Push excess wire into wall and plug hole with a
fire-resistantmaterial (such asfiberglass insula-
tion) to prevent drafts from affecting thermostat
operation.
(Instructions continue on page 16).

12
DO NOT EXCEED MAXIMUM VOLTAGE OR
CURRENT RATINGS. FIRE, PERSONAL IN-
JURY, AND/OR EQUIPMENT DAMAGE
COULD RESULT.
To prevent electrical shock and/or equip-
mentdamage,disconnectelectricalpower
at the main fuse box until installation is
complete. Verify power is off with a volt-
meter.
CAUTION
!
Mounting
hole
Pull wires through
this opening
Connect wires under
terminal screws
Mounting
hole
4-pin connector
9-pin connector
Y1
C
G
W1
R
Expansion
plugs
Figure 3. Subbase
S1 S2 S3
O
B
Y2
W2
W3
E1
E2
L
WARNING
!

13
C R
G
B
O
Changeover
Energized
In Heat
Changeover
Energized
In Cool
Compressor
Contactor
Stage 1
Fan
Relay
Heat
Relay
Stage 1
Heat
Relay
Stage 2
Thermostat
Control
Circuit
24 VAC 120 VAC
Hot
Neutral
THERMOSTAT
SYSTEM
Y1 W1 W2
Figure 4. Typical wiring diagram for single transformer systems
E1
Emergency
Relay
Constant
Output
E2
Emergency
Relay
Switched
Output
TRANSFORMER
Thefollowingwiring diagrams show typical terminaliden-
tification and wiring. For proper installation, refer to the
original manufacturers' instructions.
NOTE

14
NOTE
IF SAFETY CIRCUITS ARE IN ONLY ONE OF THE
SYSTEMS, REMOVE THE TRANSFORMER OF THE
SYSTEM WITH NO SAFETY CIRCUITS.
Figure 5. Typical wiring diagram for two transformer systems with NO safety circuits
DEPENDING ON SYSTEM REQUIRE-
MENTS, REPLACE WITH A
75VA TRANSFORMER, IF NEEDED
TWO COMMONS MUST
BE JUMPERED TOGETHER!
CUT AND
TAPE OFF!
CR
G
B
O
24 VAC 120 VAC
Hot
Neutral
THERMOSTAT
SYSTEM
Y1 W2E1 E2
TRANSFORMER
HEAT PUMP SYSTEM AUXILIARY HEATING SYSTEM
W1
24 VAC120 VAC
Hot
Neutral
TRANSFORMER
Changeover
Energized
In Cool
Changeover
Energized
In Heat
Fan
Relay
Compressor
Contactor
Stage 1
Emergency
Relay
Switched
Output
Thermostat
Control
Circuit
Emergency
Relay
Constant
Output
Heat
Relay
Stage 1
Heat
Relay
Stage 2
Limit or
Safety
Switches
Limit or
Safety
Switches

15
Figure 6. Typical wiring diagram for two transformer systems with safety circuits in BOTH systems
TWO COMMONS MUST
BE JUMPERED TOGETHER!
CR
G
B
O
THERMOSTAT
SYSTEM
Y1 W2E1 E2
HEAT PUMP SYSTEM AUXILIARY
HEATING SYSTEM
W1
Changeover
Energized
In Cool
Changeover
Energized
In Heat
Fan
Relay
Compressor
Contactor
Stage 1
Emergency
Relay
Switched
Output
Thermostat
Control
Circuit
Emergency
Relay
Constant
Output
Heat
Relay
Stage 1
Heat
Relay
Stage 2
24 VAC 120 VAC
Hot
Neutral
HEAT PUMP
TRANSFORMER
24 VAC 120 VAC
Hot
Neutral
AUXILIARY
HEATING
TRANSFORMER
24 VAC
Accessory
Relay N.O.
Contact
Limit or
Safety
Switches
Limit or
Safety
Switches
Limit or
Safety
Switches
Limit or
Safety
Switches
NOTE
Relay contacts shown are thermostatically operated. The
accessory relay scheme is required when safety circuits
exist in both systems.
Polarity must be observed. If the HOT
side of the second transformer is
jumpered to the COMMON side of the
first transformer a short will be made.
Damagetoequipmentwilloccurwhen
power is restored.
CAUTION
!

16
ATTACH THERMOSTAT TO SUBBASE
WE RECOMMEND THAT YOU SET OPTION
SWITCHESTODESIREDPOSITIONBEFOREAT-
TACHING ON SUBBASE (see OPERATION). WE
ALSORECOMMEND THATYOUPROGRAMTHE
THERMOSTATWITHBATTERY INSTALLED BE-
FORE ATTACHING ON SUBBASE (see OPERA-
TION section for programming instructions).
USE SYSTEM
HEAT-OFF-COOL-AUTO TO TURN THERMOSTAT OFF BE-
FOREATTACHINGTOWALL.FAILURETOTURN
OFF THERMOSTAT BEFORE ATTACHING TO
WALL MAY CAUSE EQUIPMENT DAMAGE DUE
TO RAPID COMPRESSOR CYCLING.
To attach thermostat to subbase, line up the plastic
snap guides at the top of the thermostat and the 4
connector pins on the thermostat with the connec-
tors near the top right section of the subbase (when
viewed from the front). Gently pivot the thermostat
down until the 9-pin connectors and the plastic
snaps lock into place (see fig. 7). Be gentle when
attaching thermostat. If the thermostat does not
seem to be attaching to the subbase easily, make
sure that the connector pins and plastic snaps are
properlyaligned,andthatexcesswireispushedinto
the wall. Damage to the thermostat may occur if
force is used.
ENGAGE TWO UPPER GUIDES; PIVOT DOWN
Figure 7. Attaching thermostat to subbase

17
SYSTEM CONFIGURATION
ANY TIME AN OPTION SWITCH IS CHANGED,
THE 9 VOLT ENERGIZER®BATTERY MUST BE
REMOVED FOR A MINIMUM OF 2 MINUTES.
NOTE
SET OPTION SWITCHES
1. Single Stage Compressor Heat Pump — with
reversing valve energized through Bor Otermi-
nals
2. Two Compressor (Split) System
Figure 8. Back of thermostat
Option switches 9-pin connector
4-pin connector Battery
W18
ON
1234
Switch #1
Switch #2
Switch #3
Switch #4 (see step 6)
OFF
OFF
OFF
W1 Y1 Field jumper W1 & Y1
ON
1234
Switch #1
Switch #2
Switch #3
Switch #4 (see step 6)
OFF
ON
OFF
W1 Y1 Field jumper W1 & Y1

18
5. Automatic Changeover from Heat to Cool
The battery maintains the stored program in the
event of a power failure. When attached to the wall
with 24 VAC power applied, the thermostat will
function normally without the battery. However, the
programwillbelostintheeventofpowerinterruption
or failure if the battery is not installed. When power
is restored, the thermostat will automatically main-
tain a temperature of 64°F or a cooling temperature
of 82°F (factory preprogrammed) as needed.
3. Multi-stage (Fossil Fuel) System — up to 2
heat stages and 1 cool stage
4. Multi-stage (Electric Heat) System — up to 2
heat stages and 1 cool stage
ON
1234
Switch #1
Switch #2
Switch #3
Switch #4 (see step 6)
ON
OFF
OFF
ON
1234
Switch #1
Switch #2
Switch #3 (see step 5)
Switch #4 (see step 6)
ON
ON
ON
1234
Switch #1 (see steps 1-4)
Switch #2 (see steps 1-4)
Switch #3 (see step 5)
Switch #4 ON
NOTE

19
CHECK THERMOSTAT OPERATION
When checking thermostat, option switch #4 for
automatic changeover must be in the OFF position.
This will allow temporary setting of heat set points
above cool settings. After system checkout, reset
optionswitchtoONpositionifautomaticchangeover
is desired (see SET OPTION SWITCHES).
FAN OPERATION
1. Turnonpowertothesystem.Iftheauxiliaryheat
source has a standing pilot, be sure to light it.
2. Press
FAN
ON – AUTO
until FAN is displayed. The
blower should begin to operate.
3. Press
FAN
ON – AUTO
until FAN is displayed. The
blower should stop operating within approxi-
mately one minute.
NOTE
HEATING SYSTEM OPERATION
1. Press SYSTEM
HEAT-OFF-COOL-AUTO untilHEATisdisplayed.(Itshould
already be displayed.)
2. Press to adjust thermostat to 99°F. All
stages of the heating system should come on
within approximately five minutes. However, if
thePUMPLED isflashing,thecompressor lock-
out feature is operating (see Lockout Bypass
Option to temporarily override the compressor
lockout feature during testing).
3. Press SYSTEM
HEAT-OFF-COOL-AUTO untilEMERisdisplayed.Repeat
step 2.
4. To program the thermostat, see PROGRAM-
MING YOUR THERMOSTAT.

20
COOLING SYSTEM OPERATION
To prevent compressor and/or property
damage, if power to the compressor has
been off or interrupted for more than 1
hour and the outdoor temperature is be-
low 50°F, DO NOT operate the system for
at least the amount of time the compres-
sor was off! This will allow the compres-
sor heaters to warm the compressor oils
to avoid damage due to slugging.
1. Press SYSTEM
HEAT-OFF-COOL-AUTO until COOL is displayed.
2. Press to adjust thermostat to 40°F. The
cooling system should come on within approxi-
mately five minutes. However, if the fan is run-
ning but the compressor is not, the compressor
lockout feature is operating (see Lockout By-
pass Option to temporarily override the com-
pressor lockout feature during testing).
3. To program the thermostat, see PROGRAM-
MING YOUR THERMOSTAT.
Afterheatingandcoolingsystemhavebeenchecked
and are running properly, determine if automatic
changeover is desired. When option switch #4 is in
the proper position, automatic changeover is en-
abledbypressing SYSTEM
HEAT-OFF-COOL-AUTO untilAUTO isdisplayed
(seeSETOPTIONSWITCHES).IntheAUTOmode,
the setpoint temperature is not displayed.
CAUTION
!