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White Rodgers 1F90W-51 Installation And Operating Instructions Manual

5-day/2-day electronic digital thermostat
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See also: Operating Manual
WHITE-RODGERS
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.
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
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.
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.
CONTENTS
Description ......................................................... 1
Precautions ........................................................ 1
Specifications ..................................................... 2
Installation .......................................................... 2
Operation ........................................................... 6
WHITE-RODGERS DIVISION
EMERSON ELECTRIC CO.
9797 REAVIS ROAD
ST. LOUIS, MISSOURI 63123
R
5-Day/2-Day Electronic Digital Thermostat

INSTALLATION INSTRUCTIONS

®
batteries will
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.
Printed in U.S.A.
1F90W-51

DESCRIPTION

W H I T
E - R O
D G E R
S

PRECAUTIONS

CAUTION
!
WARNING
!
PART NO. 37-5089A
9139

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Summary of Contents for White Rodgers 1F90W-51

  • Page 1: Table Of Contents

    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. Printed in U.S.A. 1F90W-51 DESCRIPTION W H I T E - R O D G E R...

  • Page 2: Specifications

    SPECIFICATIONS ELECTRICAL DATA Electrical Rating: 17 to 30v AC 50/60 Hz. 0.05 to 1.5 Amps 1.5 Amps Maximum Total Load (All terminals combined) Anticipation: Heating 2 to 40 Reference Values Cooling 4 to 40 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:...

  • Page 3: Replacement Installation

    REPLACEMENT INSTALLATION REMOVE OLD THERMOSTAT 1. Shut off electricity at the main fuse box until installa- tion 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.
  • Page 4 NOTE All wiring diagrams are for typical systems only. Refer to equipment manufacturers' instructions for specific sys- tem wiring information. Heating System Figure 4. Typical Wiring Diagram for Heating Only, 2-Wire, Single Transformer Systems NOTE RED jumper wire (pro- Relay vided with thermostat) must be connected be- tween thermostat's RH...

  • Page 5: Attach Thermostat To Subbase

    NOTE Cooling RED jumper wire (pro- System Relay vided with thermostat) must be connected be- tween thermostat's RH and RC terminals for pro- per thermostat operation with this system. Figure 7. Typical Wiring Diagram for Heat/Cool, 4-Wire, Single Transformer Systems Cooling System Relay...

  • Page 6: Operation

    OPERATION SYSTEM CONFIGURATION ELECTRIC HEAT SYSTEMS For central electric heat systems where the blower is energized by a separate circuit through the fan relay (meaning that the fan turns on immediately on call for heat), clip wire W14 on the back of the thermostat (see fig. 10).

  • Page 7: Cooling System

    COOLING SYSTEM CAUTION 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 below 50 F, DO NOT operate the system for at least the amount of time the com- pressor was off! This will allow the compressor heaters to warm the compressor oils to avoid damage due to slugging.

  • Page 8: Warranty Information

    If you need further information about this product, please write to: White-Rodgers Division, Emerson Electric Co. 9797 Reavis Road St. Louis, MO 63123 Attn: Technical Service Department THIS WARRANTY STATEMENT SUPERSEDES ALL WARRANTY STATEMENTS DATED PRIOR TO MARCH 1, 1988. White-Rodgers Division of Emerson Electric Co.

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