White Rodgers 1F87-251 Installation And Operation Instructions Manual
White Rodgers 1F87-251 Installation And Operation Instructions Manual

White Rodgers 1F87-251 Installation And Operation Instructions Manual

Programmable electronic digital thermostat

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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 7-Day Digital Thermostat uses the
technology of a solid-state microcomputer to provide precise
time/temperature control. This thermostat offers you the flexibil-
ity to design heating and cooling programs that fit your needs.
Features:
• Separate program for each day of the week with four separate
time/temperature settings per day
• Simultaneous heat and cool program storage
• Preprogrammed temperature control
• LCD continuously displays setpoint, and alternately dis-
plays time and room temperature
• Backlit display
This thermostat is intended for use with a low voltage system;
do not use this thermostat with a 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.
CAUTION
!
To prevent electrical shock and/or equipment dam-
age, disconnect electric power to system at main fuse
or circuit breaker box until installation is complete.
ELECTRICAL DATA
Electrical Rating:
8 to 30 VAC 50/60 Hz. or D.C.
0.05 to 1.0 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:
-4°F to 150°F
WHITE-RODGERS
EMERSON ELECTRIC CO.
9797 REAVIS ROAD
ST. LOUIS, MISSOURI 63123-5398
www.white-rodgers.com
1F87-251
Programmable Electronic Digital Thermostat
INSTALLATION AND
OPERATION INSTRUCTIONS
• Temperature override until next program period
• Manual program override (HOLD temperature)
• °F/°C convertibility
• Temperature range 45° to 90°F
• RC, RH, W, Y, G , O and B terminals
• B and O terminals for single stage heat pumps (no auxiliary
heat) or damper operation
• Program storage in case of power loss.
• Battery powered (2 "AA" Energizer
cluded)
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 damage
thermostat and could cause personal injury and/or
property damage.
Thermostat installation and all components of the
system shall conform to Class II (current limited) cir-
cuits per the NEC code. Failure to do so may cause a
fire hazard.
APPLICATIONS
For use with:
Standard heat/cool or heat only systems
Electric heat systems
Gas or oil fired systems
Gas systems with intermittent ignition devices (I.I.D.)
and/or vent dampers
Hydronic (hot water or steam) systems
Single-stage heat pump systems (no auxiliary heat)
Millivolt systems
DO NOT USE WITH:
Multi-stage systems
Systems exceeding 30 VAC and 1.5 amps
3-wire zoned hydronic heating systems
DESCRIPTION
®
alkaline batteries in-
PRECAUTIONS

SPECIFICATIONS

PART NO. 37-6417C
Replaces 37-6417B
0441

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Table of Contents
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Summary of Contents for White Rodgers 1F87-251

  • Page 1: Specifications

    Shipping Temperature Range: -4°F to 150°F WHITE-RODGERS EMERSON ELECTRIC CO. 9797 REAVIS ROAD ST. LOUIS, MISSOURI 63123-5398 www.white-rodgers.com 1F87-251 Programmable Electronic Digital Thermostat INSTALLATION AND OPERATION INSTRUCTIONS DESCRIPTION • Temperature override until next program period • Manual program override (HOLD temperature) •...
  • Page 2: Check Thermostat Operation

    INSTALLATION REMOVE OLD THERMOSTAT 1. Shut off electricity at the main fuse box until installation is complete. Ensure that electrical power is disconnected. 2. Remove the front cover of the old thermostat. With wires still attached, remove wall plate from the wall. If the old thermostat has a wall mounting plate, remove the thermostat and the wall mounting plate as an assembly.
  • Page 3: Wiring Diagram

    Heating Relay System NOTE For 2-wire Heat only, attach to RH and W Figure 2. Typical wiring diagram for heat only, 3-wire, single transformer systems JUMPER WIRE Cooling System Relay Figure 3. Typical wiring diagram for cool only, 3-wire, single transformer systems NOTE RED jumper wire (provided with thermostat) must be connected between thermostat RH and RC terminals...
  • Page 4: Operation

    OPERATION Before you begin programming your thermostat, you should be familiar with its features and with the display and the location and operation of the thermostat buttons. Your thermostat consists of two parts: the thermostat cover and the base. To remove the cover, pull it straight out from the base.
  • Page 5: Operating Features

    Step Press Button(s) Displayed (Factory Default) PRGM and RUN HOLD* HOLD* HOLD* HOLD* HOLD* HOLD* * Press HOLD to advance to next item or TIME to move backwards to previous item 5) Select Compressor Lockout LOC OFF or ON - Selecting LOC ON will cause the thermostat to wait 5 minutes before turning on the compressor if the heating and cooling system loses power.
  • Page 6: Enter Heating Program

    PROGRAMMING YOUR THERMOSTAT This section will help you plan your thermostat’s program to meet your needs. For maximum comfort and efficiency, keep the following guidelines in mind when planning your program. • When heating (cooling) your building, program the tem- peratures to be cooler (warmer) when the building is vacant or during periods of low activity.
  • Page 7: Troubleshooting

    5. Press PRGM once. The currently programmed start time and setpoint temperature for the Monday's 2nd heating program period will appear. 6. Repeat steps 3 and 4 to select the start time and heating temperature for Monday's 2nd heating program period. 7.
  • Page 8: Troubleshooting

    TROUBLESHOOTING (cont.) Symptom No Heat/No Cool/No Fan (common problems) No Heat No Cool Heat, Cool or Fan Runs Constantly Furnace Cycles Too Fast or Too Slow (narrow or wide temperature swing) Cooling Cycles Too Fast or Too Slow (narrow or wide temperature swing) Thermostat Setting and Thermometer Disagree Clock Loses or Gains Time...

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