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PART NO. 37-6923A
0807
PRECAUTIONS
FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY
BEFORE INSTALLING OR OPERATING THIS CONTROL COULD CAUSE
PERSONAL INJURY AND/OR PROPERTY DAMAGE.
DESCRIPTION
Operator: Save these instructions for future use!
This low voltage thermostat is designed to provide conve-
nient control of the heating/cooling system. To provide
greater room comfort, the sensitive spiral bimetal is com-
bined with an adjustable heating anticipator and a fixed
cooling anticipator to provide maximum comfort.
1F56N-911
Low Voltage Heating/Cooling Thermostat
INSTALLATION INSTRUCTIONS
CONTENTS
Description ........................................................ 1
Precautions ....................................................... 1
Specifications .................................................... 2
Installation ......................................................... 2
Select Thermostat Location
Route Wires to Location
Attach Subbase to Wall
Special System Configurations
Electric Heat Furnaces (Single Trans-
former Systems Only)
Two-Transformer Systems
Heat Pump Applications
Special Application Terminals
Attach Thermostat to Subbase
Operation & Maintenance ................................. 5
Adjusting Heat Anticipator
Calibrating Thermostat
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 short out terminals on gas valve or pri-
mary control to test. Short or incorrect wiring will
burn out heat anticipator and could cause per-
sonal injury and/or property damage.
Do not use on circuits exceeding 30 volts. Higher
voltage will damage control and could cause
shock or fire hazard.
Thermostat installation and all components of
the system shall conform to Class II circuits per
the NEC code.
CAUTION
!
WARNING
!
FA
N
O
N
A
U
T
O
C
O
O
L
O
F
F
H
E
A
T
S
Y
S
T
E
M
90
90
80
70
60
50
32
°C
21
10
80
70
60
50
32
°C
21
10
White-Rodgers is a division
of Emerson Electric Co.
www.white-rodgers.com