White Rodgers 1F90W-51 Specifications download pdf

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 damage

thermostat and could cause personal injury and/or

property damage.

WHITE-RODGERS DIVISION

EMERSON ELECTRIC CO.

9797 REAVIS ROAD

ST. LOUIS, MISSOURI 63123-5398

Printed in U.S.A.

DESCRIPTION

WHITE-RODGERS

1F82-51

Programmable Electronic Digital

Heat Pump Thermostat

INSTALLATION AND

OPERATION INSTRUCTIONS

PART NO. 37-5650A

9618

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.

Your new White-Rodgers 5-Day/2-Day Digital Heat Pump Ther-

mostat 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.

Features:

• Separate 5-day (weekday) and 2-day (weekend) programming

with four separate time/temperature periods per program

• Simultaneous heat and cool program storage

• Preprogrammed temperature control

PRECAUTIONS

SPECIFICATIONS

• LCD continuously displays set point, and alternately dis-

plays time and room temperature

• Temperature override until next program period

• Manual program override (HOLD temperature)

• °F/°C convertibility

• Temperature range 45° to 90°F

• Eight terminals for single or two-transformer systems

• O/B terminal for heat pump systems

• Armchair Programming Capability

This thermostat is intended for use with a 24-volt system; do not

use this thermostat with a millivolt or line voltage system. If in

doubt about whether your wiring is millivolt, line, or low voltage,

have it inspected by a qualified heating and air conditioning

contractor or electrician.

Do not exceed the specification ratings.

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.

ELECTRICAL DATA

Electrical Rating:

20 to 30 VAC 50/60 Hz. or D.C.

0.05 to 1.5 Amps (Load per terminal)

1.5 Amps Maximum Total Load (All terminals combined)

THERMAL DATA

Setpoint Temperature Range:

45°F to 90°F (7°C to 32°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

APPLICATIONS

For use with:

• Heat pump systems with up to two stages heat, one

stage cool

DO NOT USE WITH:

• Millivolt systems

• Systems exceeding 30 VAC and 1.5 amps

• 3-wire zoned hydronic heating systems

CAUTION

WARNING

1 2 3 4 5 6 7 8

Summary of Contents

Page 1 - WHITE-RODGERS

To prevent electrical shock and/or equipment damagedisconnect electric power to system at main fuse orcircuit breaker box until installation is comple

Page 2 - INSTALLATION

2INSTALLATIONREMOVE OLD THERMOSTAT1. Shut off electricity at the main fuse box until installation iscomplete. Ensure that electrical power is disconne

Page 3 - TAPE OFF!

3NOTENOTEThe following wiring diagrams show typical terminal identifica-tion and wiring. For proper installation, refer to the originalmanufacturer&ap

Page 4 - Fan Operation

4Heating System1. Move SYSTEM switch to HEAT position2. Press to adjust thermostat setting to 90° and hold for fiveseconds. Both stages of the heati

Page 5 - OPERATING FEATURES

5OPERATIONBefore you begin programming your thermostat, you should befamiliar with its features and with the display and the location andoperation of

Page 6 - PROGRAMMING YOUR THERMOSTAT

6PROGRAMMING YOUR THERMOSTATNow you are ready to program your thermostat. This section willhelp you plan your thermostat’s program to meet your needs.

Page 7 - MO TU WE TH FR

73. Press VIEW PRGM once. “MO TU WE TH FR” (indicatingweekday program) will appear in the display. Also dis-played are the currently programmed start

Page 8