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WHITE-RODGERS 90 SERIES
1F95-391
MULTI-STAGE/HEAT PUMP INSTALLATION/CONFIGURATION
This White-Rodgers Digital Thermostat uses
microcomputer technology to provide precise
time, humidity, and temperature control. This
thermostat offers the flexibility to design
1F95-391: 7 Day programming; residen-
tial applications.
ELECTRICAL DATA
Electrical Rating:
20 to 30 VAC, 50/60 Hz with common
0.05 to 1.5 Amps per terminal
2.5 Amps maximum total load (all
terminals combined).
Hardwired only.
C terminal is required.
INSTALLATION
Part No. 37-6527B
Replaces 37-6527A
0443
DESCRIPTION
SPECIFICATIONS
heating and cooling programs that fit
building needs. This thermostat is adaptable
to most 24 volt residential forced air multi-
Standard Systems:
Multi-stage gas, oil, electric.
Single-stage or two-stage compressor
heat pump.
THERMAL DATA
Setpoint Temperature Range:
45° to 99°F (7° to 37°C)
Operating Ambient Temperature:
32° to 110°F (0° to 43°C)
Operating Humidity Range:
90% non-condensing max.
Shipping Temperature Range:
-4° to 149°F (-20° to 65°C)
PRECAUTIONS
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.
Do not use on circuits exceeding
specified voltage. Higher voltage will
damage thermostat and could cause
shock or fire hazard.
Thermostat installation and all compo-
nents of the system shall conform to
Class II circuits per the NEC code.
To prevent electrical shock and/or
equipment damage, disconnect electric
power to system at main fuse or circuit
breaker box until installation is
complete.
Read all instructions thoroughly before
beginning installation.
This thermostat is intended for use with a
low voltage system. Do not use on a line
voltage system.
CAUTION
!
WARNING
!
Do not exceed ratings shown in the Specifi-
cations section, above. If in doubt about the
electrical ratings of your heating/cooling
system, have it inspected by a qualified
heating and air conditioning contractor or
licensed electrician.
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.
NOTE
stage or heat pump systems with electric or
fossil fuel auxiliary.
White-Rodgers is a division
of Emerson Electric Co.
www.white-rodgers.com