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White Rodgers 1F90W-51 User Manual

White Rodgers Control panel

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PART NO. 37-5089A

9139

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.

DESCRIPTION

This wall-mounted, low voltage thermostat maintains
room temperature by controlling the operation of heating
and cooling systems. The user may program up to four
time/temperature settings per 24 hour period. The ther-
mostat stores independent heating and cooling programs
for 5-day (weekday) and 2-day (weekend) periods. The
thermostat will store both heating and cooling programs
simultaneously. Three "AA" Energizer

®

batteries will

maintain the stored program for approximately one year,
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.

INSTALLATION INSTRUCTIONS

1F90W-51

5-Day/2-Day Electronic Digital Thermostat

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 electrical
codes and ordinances.

This control is a precision instrument, and should be
handled carefully. Rough handling or distorting compo-
nents 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 volt-
age. Higher voltage will damage control and
could cause shock or fire hazard.

Do not short out terminals on gas valve or pri-
mary control to test. Short or incorrect wiring will
burn out thermostat and could cause personal
injury and/or property damage.

CAUTION

!

WARNING

!

WHITE-RODGERS

Printed in U.S.A.

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 ........................................................... 6

System Configuration

Electric Heat Systems
Energy Management Recovery (EMR)

Check Thermostat Operation

Fan Operation
Heating System
Cooling System

Troubleshooting

R

WHITE-RODGERS

WHITE-RODGERS DIVISION
EMERSON ELECTRIC CO.
9797 REAVIS ROAD
ST. LOUIS, MISSOURI 63123