White Rodgers 1F92W-51 User Manual

INSTALLATION &
OPERATION GUIDE

Multi-stage/Heat Pump Electronic
Digital Thermostat

WHITE-RODGERS

Operator: Save this booklet for future use!

1F92W-51

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.

2

In This Guide . . .

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

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

3

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

4

• 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)

PRECAUTIONS

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.
All wiring must conform to local and national electri-

cal 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.

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.

WARNING

!

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.

5

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 (All terminals

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

6

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)

INSTALLING YOUR THERMOSTAT

NEW INSTALLATION

WE RECOMMEND THAT YOU PROGRAM THE
THERMOSTAT WITH BATTERY INSTALLED BE­FORE ATTACHING ON SUBBASE. SEE OPERA­TION SECTION 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.

ROUTE WIRES TO LOCATION

NOTE

All wiring must conform with local and national
electrical codes and ordinances.

7

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. Snag 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 comes out
of the wall.

8

1

⁄2” hole for

thermostat wire

Stout cord with 6”

chain attached

Baseboard

strip moulding

Quarter round

removed

1

⁄4” guide hole

for sighting

Hooked wire for snagging chain

Approximately

5 feet from floor

3

⁄4” hole in floor of partition

Figure 1. Routing thermostat wires

REPLACEMENT INSTALLATION

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

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 thermo-

stat using the labels enclosed with the new
thermostat (see Table 1). 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.

9

LABEL

NUMBER

10

(1)
(2)
(3)
(4)
(5)
(6)
(7)

(8)

(9)
(10)
(11)
(12)
(13)

TABLE 2. TERMINAL REFERENCE

NEW THERMOSTAT

TERMINAL

DESIGNATION FUNCTION

G
C

L
R
O
B

E1

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)

E2

Emergency Heat Relay (continually

energized in Emergency Mode)
Y1
Y2

W1
W2
W3

Stage 1 Cool

(this terminal not used)

Stage 1 Heat (Compressor)

Stage 2 Heat (Auxiliary)

(this terminal not used)

OLD THERMOSTAT

TERMINAL

DESIGNATION

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.

2. Connect wires beneath terminal screws on sub­base 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
against bottom of subbase, adjust until level, and

then tighten screws. (Leveling is for appearance
only and will not affect thermostat operation.) If
you are using existing mounting holes, or if holes
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-resistant material (such as fiberglass insula­tion) to prevent drafts from affecting thermostat
operation.

(Instructions continue on page 16).

11

CAUTION

!

WARNING

!

DO NOT EXCEED MAXIMUM VOLTAGE OR
CURRENT RATINGS. FIRE, PERSONAL IN­JURY, AND/OR EQUIPMENT DAMAGE
COULD RESULT.

Connect wires under

terminal screws

S3

S2

Mounting

hole

9-pin connector

Pull wires through

this opening

S1

O

W1
E1

B
Y1
Y2

C

G

4-pin connector

E2

L

R
W2
W3

Figure 3. Subbase

12

Expansion

plugs

To prevent electrical shock and/or equip­ment damage, disconnect electrical power
at the main fuse box until installation is
complete. Verify power is off with a volt­meter.

Mounting

hole

NOTE

The following wiring diagrams show typical terminal iden­tification and wiring. For proper installation, refer to the
original manufacturers' instructions.

Thermostat

Control

Circuit

O

Changeover

Energized

In Cool

B

Changeover

Energized

In Heat

G

Y1 W1

Fan

Relay

Compressor

Contactor

Stage 1

E2

Emergency

Relay

Constant

Output

E1

Emergency

Relay

Switched

Output

W2

Heat

Relay

Stage 2

Heat

Relay

Stage 1

C R

Figure 4. Typical wiring diagram for single transformer systems

THERMOSTAT

SYSTEM

Hot

24 VAC 120 VAC

Neutral

TRANSFORMER

13

NOTE

IF SAFETY CIRCUITS ARE IN ONLY ONE OF THE
SYSTEMS, REMOVE THE TRANSFORMER OF THE
SYSTEM WITH NO SAFETY CIRCUITS.

Thermostat

Control

Circuit

14

CUT AND

TAPE OFF!

Hot

Neutral

TRANSFORMER

24 VAC120 VAC

B

O

Changeover

Changeover

Energized

In Cool

HEAT PUMP SYSTEM AUXILIARY HEATING SYSTEM

TWO COMMONS MUST

BE JUMPERED TOGETHER!

Energized

In Heat

Compressor

Y1

Contactor

Stage 1

G

Fan

Relay

W1

Heat

Relay

Stage 1

Emergency

Relay

Switched

Output

Emergency

E2

W2E1

Heat

Relay

Stage 2

Relay

Constant

Output

DEPENDING ON SYSTEM REQUIRE-

75VA TRANSFORMER, IF NEEDED

C

MENTS, REPLACE WITH A

R

Limit or

Safety

Switches

24 VAC

THERMOSTAT

SYSTEM

TRANSFORMER

Hot

120 VAC

Neutral

Limit or

Safety

Switches

Figure 5. Typical wiring diagram for two transformer systems with NO safety circuits

Relay contacts shown are thermostatically operated. The

CAUTION

!

NOTE

accessory relay scheme is required when safety circuits
exist in both systems.

Thermostat

Control

Circuit

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.
Damage to equipment will occur when
power is restored.

B

O

Changeover

Changeover

Energized

In Cool

HEAT PUMP SYSTEM AUXILIARY

TWO COMMONS MUST

BE JUMPERED TOGETHER!

Energized

In Heat

Compressor

Y1

Contactor

Stage 1

G

Fan

Relay

W1

Heat

Relay

Stage 1

Emergency

Relay

Switched

Output

E2

W2E1

Heat

Relay

Stage 2

Emergency

Relay

Constant

Output

HEATING SYSTEM

C

THERMOSTAT

R

SYSTEM

Limit or

Safety

Switches

Accessory
Relay N.O.

Limit or

Safety

Switches

24 VAC

24 VAC

Contact

24 VAC

AUXILIARY

HEATING

TRANSFORMER

HEAT PUMP

TRANSFORMER

Hot

Neutral

Hot

120 VAC

Neutral

120 VAC

Limit or

Safety

Switches

Limit or

Safety

Switches

Figure 6. Typical wiring diagram for two transformer systems with safety circuits in BOTH systems

15

ATTACH THERMOSTAT TO SUBBASE

WE RECOMMEND THAT YOU SET OPTION
SWITCHES TO DESIRED POSITION BEFORE AT­TACHING ON SUBBASE (see OPERATION). WE
ALSO RECOMMEND THAT YOU PROGRAM THE
THERMOSTAT WITH BATTERY INSTALLED BE­FORE ATTACHING ON SUBBASE (see OPERA­TION section for programming instructions).

SYSTEM

USE

HEAT-OFF-COOL-AUTO

TO TURN THERMOSTAT OFF BE-

FORE ATTACHING TO WALL. FAILURE TO TURN
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 connec­tors 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

16

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
properly aligned, and that excess wire is pushed into
the wall. Damage to the thermostat may occur if

force is used.

ENGAGE TWO UPPER GUIDES; PIVOT DOWN

Figure 7. Attaching thermostat to subbase