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COMFORT-SET
®
90 SERIES
MULTI-STAGE/HEAT PUMP INSTALLATION/CONFIGURATION
This White-Rodgers Automatic Setback
Digital Thermostat uses microcomputer
technology to provide precise time and
temperature control. This thermostat offers
1F93-380: 7 Day programming; commer-
cial 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)
INSTALLATION
WHITE-RODGERS
Part No. 37-6066B
Replaces 37-6066A
0120
DESCRIPTION
SPECIFICATIONS
the flexibility to design heating and cooling
programs that fit building needs. This
thermostat is adaptable to most 24 volt
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.
CAUTION
!
WARNING
!
This thermostat is intended for use with a
low voltage system. Do not use on a line
voltage system.
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
commercial forced air multi-stage or heat
pump systems with electric or fossil fuel
auxiliary.