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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.
WHITE-RODGERS
1F84-51
Programmable Electronic Digital
Heat Pump Thermostat
INSTALLATION AND
OPERATION INSTRUCTIONS
PART NO. 37-5739A
Replaces 37-5613C
9637
SPECIFICATIONS
PRECAUTIONS
DESCRIPTION
Your new White-Rodgers 7-Day Digital Heat Pump Thermostat
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 program for each day of the week
• Simultaneous heat and cool program storage
• Preprogrammed temperature control
• Four separate time/temperature settings per 24 hour period
• 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.
CAUTION
!
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
FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY
BEFORE INSTALLING OR OPERATING THIS CONTROL COULD CAUSE
PERSONAL INJURY AND/OR PROPERTY DAMAGE.
Operator: Save these instructions for future use!
WARNING
!