White Rodgers 1F92W 51 Thermostat User Manual

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.

In This Guide . . .

YOUR NEW THERMOSTAT’S

OPERATING YOUR THERMOSTAT ............... 22

PARTS OF THE THERMOSTAT

The Back Of the Thermostat Body

The Display

FEATURES .................................................. 4

PRECAUTIONS ................................................. 5

THE THERMOSTAT’S SPECIFICATIONS ....... 6

INSTALLING YOUR THERMOSTAT ................ 7

NEW INSTALLATION

The Thermostat Buttons

OPERATING FEATURES

Select Thermostat Location

PROGRAMMING YOUR

Route Wires to Location

REPLACEMENT INSTALLATION

Remove Old Thermostat

THERMOSTAT........................................... 34

PLANNING FOR YOUR NEEDS

ENTERING YOUR PROGRAM

Set Current Time and Day

Attach Subbase to Wall

SYSTEM CONFIGURATON

Enter Heating Program

Set Option Switches

Enter Cooling Program

CHECK THERMOSTAT OPERATION

Fan Operation

CHECK YOUR PROGRAMMING

QUESTIONS AND ANSWERS ........................ 44

Heating System Operation

Cooling System Operation

LOCKOUT BYPASS OPTION

Compressor Long Term Cycle Protection

Compressor Short Term Cycle Protection

YOUR NEW THERMOSTAT’S FEATURES

• Five-day/two-day programming capability

• Adjustable cycle times

• Simultaneous heat and cool program storage

• 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

• 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

• Electric Heat (installer-selectable)

• Armchair programming capability

• LCD displays continuous setpoint, time, and

room temperature

PRECAUTIONS

If in doubt about whether your wiring is millivolt, line,

WARNING

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 use on circuits exceeding specified

voltage. Higher voltage will damage control

and could cause shock or fire hazard.

Do not exceed the specification ratings.

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.

All wiring must conform to local and national electri-

cal codes and ordinances.

This control is a precision instrument, and should be

handledcarefully.Roughhandlingordistortingcom-

ponents could cause the control to malfunction.

CAUTION

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.

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:

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

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

ACCESSORIES

STAGING DATA

Thermostat Guard:

Up to 3 heating stages

Up to 1 cooling stage

W. R. Part No. F29-0198 (clear)

or F29-0238 (opaque)

INSTALLING YOUR THERMOSTAT

4. Avoid locations close to windows, adjoining out-

NEW INSTALLATION

side walls, or doors that lead outside.

WE RECOMMEND THAT YOU PROGRAM THE

THERMOSTAT WITH BATTERY INSTALLED BE-

FORE ATTACHING ON SUBBASE. SEE OPERA-

TION SECTION FOR PROGRAMMING INSTRUC-

TIONS.

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 loca-

tion.

SELECT THERMOSTAT LOCATION

7. Never locate thermostat in a room that normally

warmer or cooler than the rest of the building.

Proper location insures that the thermostat will

provide a comfortable building temperature. Ob-

serve the following general rules when selecting

a location:

8. Avoid locations with poor air circulation, such as

behind doors or in alcoves.

ROUTE WIRES TO LOCATION

1. Locate thermostat about 5 ft. above the floor.

2. Installthermostatonapartitioningwall, notonan

outside wall.

NOTE

All wiring must conform with local and national

electrical codes and ordinances.

3. Never expose thermostat to direct light from

lamps, sun, fireplacesoranytemperatureradiat-

ing equipment.

1. Probe for obstructions in partition before drilling

⁄ ” hole for

⁄2

” hole in wall at selected location. Take up

quarter round and drill a small guide hole for

sighting(seefig. 1). Frombasement, drill³⁄

”hole

in partition floor next to guide hole. In buildings

without basements, drill ¹⁄

” hole through ceiling

thermostat wire

Stout cord with 6”

chain attached

Approximately

5 feet from floor

Baseboard

strip moulding

⁄ ” guide hole

and into partition from above (see fig. 1).

for sighting

Quarter round

removed

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.

⁄ ” hole in floor of partition

Hooked wire for snagging chain

3. Attach thermostat wires to cord and pull wires

through hole in wall so that 6” of wire comes out

of the wall.

Figure 1. Routing thermostat wires

REPLACEMENT INSTALLATION

REMOVE OLD THERMOSTAT

TABLE 1. WIRE IDENTIFICATION LABELS

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. Use the Cross Reference Guide to find the

thermostat type you are replacing.

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.

5. Identify each wire attached to the old thermo-

stat using the labels enclosed with the new

thermostat (see Table 1). Record the identifi-

cationofthewireonthecorrespondingblank

in Table 2.

7. Install new thermostat using the following proce-

dures.

TABLE 2. TERMINAL REFERENCE

FUNCTION

NEW THERMOSTAT

TERMINAL

OLD THERMOSTAT

TERMINAL

LABEL

NUMBER

DESIGNATION

(1)

(2)

(3)

(4)

(5)

(6)

(7)

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

(8)

(9)

(10)

(11)

(12)

(13)

(this terminal not used)

Stage 1 Heat (Compressor)

Stage 2 Heat (Auxiliary)

(this terminal not used)

ATTACH SUBBASE TO WALL

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.

1. Remove the packing material from the thermo-

stat. 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 con-

nectors. Forcing or prying on the thermostat will

cause damage to the unit.

6. Push excess wire into wall and plug hole with a

fire-resistant material (such as fiberglass insula-

tion) to prevent drafts from affecting thermostat

operation.

2. Connect wires beneath terminal screws on sub-

base using wiring schematic for your particular

application (see figs. 3 through 6).

(Instructions continue on page 16).

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

WARNING

CAUTION

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-

ment damage, disconnect electrical power

at the main fuse box until installation is

complete. Verify power is off with a volt-

meter.

Expansion

plugs

Connect wires under

terminal screws

S1 S2

Mounting

hole

4-pin connector

Mounting

hole

9-pin connector

Pull wires through

this opening

Figure 3. Subbase

NOTE

The following wiring diagrams show typical terminal iden-

tification and wiring. For proper installation, refer to the

original manufacturers' instructions.

Thermostat

Control

Circuit

THERMOSTAT

SYSTEM

Emergency

Relay

Switched

Output

Changeover

Energized

In Heat

Heat

Relay

Fan

Relay

Stage 2

Hot

24 VAC

120 VAC

Emergency

Relay

Constant

Output

Heat

Relay

Changeover

Energized

In Cool

Compressor

Contactor

Stage 1

Neutral

TRANSFORMER

Stage 1

Figure 4. Typical wiring diagram for single transformer systems

NOTE

IF SAFETY CIRCUITS ARE IN ONLY ONE OF THE

SYSTEMS, REMOVE THE TRANSFORMER OF THE

SYSTEM WITH NO SAFETY CIRCUITS.

Thermostat

Control

Circuit

THERMOSTAT

SYSTEM

CUT AND

TAPE OFF!

Emergency

Relay

Switched

Output

Changeover

Energized

In Heat

Heat

Relay

Limit or

Safety

Fan

Hot

Relay

Stage 2

Switches

120 VAC

24 VAC

Limit or

Safety

TRANSFORMER

Emergency

Relay

Constant

Output

Changeover Compressor

Heat

Relay

Neutral

TRANSFORMER

Hot

Energized

In Cool

Contactor

Stage 1

Switches

Stage 1

120 VAC

24 VAC

Neutral

HEAT PUMP SYSTEM

AUXILIARY HEATING SYSTEM

DEPENDING ON SYSTEM REQUIRE-

MENTS, REPLACE WITH A

75VA TRANSFORMER, IF NEEDED

TWO COMMONS MUST

BE JUMPERED TOGETHER!

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

CAUTION

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.

Damage to equipment will occur when

power is restored.

Thermostat

Control

Circuit

THERMOSTAT

SYSTEM

Emergency

Relay

Switched

Output

Changeover

Energized

In Heat

Limit or

Safety

Limit or

Safety

Heat

Fan

Relay

Hot

Relay

Switches

Stage 2

24 VAC

120 VAC

Neutral

Emergency

Relay

Constant

Output

Changeover Compressor

Heat

Relay

24 VAC

Energized

In Cool

Contactor

Stage 1

Accessory

Relay N.O.

Contact

AUXILIARY

HEATING

Stage 1

TRANSFORMER

HEAT PUMP SYSTEM

AUXILIARY

HEATING SYSTEM

HEAT PUMP

Limit or

Safety

Limit or

Safety

TRANSFORMER

Hot

TWO COMMONS MUST

BE JUMPERED TOGETHER!

Switches

24 VAC

120 VAC

Neutral

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

ATTACH THERMOSTAT TO SUBBASE

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.

WE RECOMMEND THAT YOU SET OPTION

SWITCHESTODESIREDPOSITIONBEFOREAT-

TACHING ON SUBBASE (see OPERATION). WE

ALSORECOMMEND THATYOUPROGRAMTHE

THERMOSTAT WITH BATTERY INSTALLED BE-

FORE ATTACHING ON SUBBASE (see OPERA-

TION section for programming instructions).

SYSTEM

HEAT-OFF-COOL-AUTO

USE

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