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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 heat
pumps and multi-stage systems. Use this thermostat for
applications requiring up to three stages of heat and up to
two stages of cool. Indicator lights show the system
status. The user may program up to four time/temperature
settings per 24 hour period. The thermostat stores set-
tings for a five-day (weekday) program and a two-day
(weekend) program. The thermostat will store both heat-
ing and cooling programs simultaneously. A 9 volt Ener-
®
gizer
battery will maintain the stored program for approxi-
mately one week, 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.
Do not exceed the specification ratings.
CONTENTS
Description ......................................................... 1
Precautions ........................................................ 1
Specifications ..................................................... 2
Installation .......................................................... 2
Select Thermostat Location
Operation ........................................................... 6
WHITE-RODGERS DIVISION
EMERSON ELECTRIC CO.
9797 REAVIS ROAD
ST. LOUIS, MISSOURI 63123-5398
R
Multi-stage/Heat Pump Electronic Digital Thermostat
INSTALLATION INSTRUCTIONS
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 installa-
tion 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 damage thermostat and could cause per-
sonal injury and/or property damage.
Printed in U.S.A.
1F92-71
DESCRIPTION
W H I
T E - R
O D G
D IG IT
E R S
A L C O
M F O R
T S E T
I I
PRECAUTIONS
CAUTION
!
WARNING
!
PART NO. 37-4742B
Replaces 37-4742A
9309
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Summary of Contents for White Rodgers 1F92-71
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Page 1: Table Of Contents
1F92-71 WHITE-RODGERS Multi-stage/Heat Pump Electronic Digital Thermostat INSTALLATION INSTRUCTIONS 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 heat pumps and multi-stage systems. -
Page 2: Specifications
SPECIFICATIONS THIS CONTROL IS DESIGNED FOR USE WHERE BOTH SIDES OF THE TRANSFORMER ARE PRESENT TO THE THERMOSTAT (both the hot and common sides of the 24vAC end of the transformer.) Anticipation: ELECTRICAL DATA Heating 4 to 40 Electrical Rating: Cooling 4 to 40 Reference Values 20 to 30vAC 50/60 Hz. -
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. PULL STRAIGHT OUT 3. - Page 4 Expansion 2. Connect wires beneath terminal screws on subbase plugs using wiring schematic for your particular application Connect wires under (see figs. 3 through 6). terminal screws 3. Place subbase over hole in wall and mark mounting hole locations on wall using subbase as a template. Mounting 4.
- Page 5 NOTE IF SAFETY CIRCUITS ARE IN ONLY ONE OF THE SYSTEMS, REMOVE THE TRANSFORMER OF THE SYSTEM WITH NO SAFETY CIRCUITS. Malfunction Thermostat Light Control Circuit THERMOSTAT SYSTEM Emergency Changeover Heat Compressor Heat System Limit or CUT AND Relay Monitor Energized Relay Contactor...
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Page 6: Attach Thermostat To Subbase
ATTACH THERMOSTAT TO SUBBASE IT IS RECOMMENDED THAT YOU SET OPTION SWITCHES TO DESIRED POSITION BEFORE ATTACH- ING ON SUBBASE (see OPERATION). IT IS ALSO RECOMMENDED THAT YOU PROGRAM THE THERMOSTAT WITH BATTERY INSTALLED BEFORE ATTACHING ON SUBBASE (see OPERATION GUIDE for programming instructions). -
Page 7: Check Thermostat Operation
5. Economizer — 1st stage cooling LOCKOUT BYPASS OPTION When using economizer with single stage heat pump, field CAUTION jumper W1 & Y2 Switch #1 (see steps 1-4) FOR QUALIFIED SERVICE TECHNICIANS’ USE Switch #2 (see steps 1-4) Switch #3 ONLY. -
Page 8: Cooling System
COOLING SYSTEM After heating and cooling system have been checked and are running properly, determine if automatic changeover CAUTION is desired. When option switch #4 is in the proper position, automatic changeover is enabled by pressing the SYS- TEM SWITCH until AUTO is displayed (see SET OPTION To prevent compressor and/or property damage, SWITCHES).