White Rodgers 875 User Manual

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FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY 
BEFORE INSTALLING OR OPERATING THIS CONTROL COULD CAUSE 
PERSONAL INJURY AND/OR PROPERTY DAMAGE.
This thermostat is intended for use with a low voltage system; 
do not use this thermostat with a line voltage system. If in doubt 
about whether your wiring is millivolt, line, or low voltage, have it 
inspected by a qualifi ed heating and air conditioning contractor 
or electrician.
Do not exceed the specifi cation 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.
DESCRIPTION
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 specifi ed  voltage. 
Higher voltage will damage control and could cause 
shock or fi re 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.
Thermostat installation and all components of the 
system shall conform to Class II circuits per the NEC 
code.
•  Temperature override until next program period
•  Manual program override (HOLD temperature)
• Temporary HOLD
• °F/°C convertibility
•  Temperature range 45° to 90°F
•  RC, RH, C, W, Y, G, O and B terminals
•  Optional C terminal (Dual Power option)
•  B and O terminals for single stage heat pumps (no auxiliary 
heat) or damper operation
•  Program storage in case of power loss
•  2 “AA” alkaline batteries included
Operator: Save these instructions for future use!
Your new White-Rodgres 7-Day Digital Thermostat uses the 
technology of a solid-state microcomputer to provide precise 
time/temperature control. This thermostat offers you the fl exibility 
to design heating and cooling programs that fi t your needs.
Features:
•  Separate program for each day of the week with four separate 
time/temperature periods per day
•  Simultaneous heat and cool program storage
•  Preprogrammed temperature control
• Backlit display
•  LCD continuously displays setpoint, and alternately displays 
time and room temperature
PRECAUTIONS
SPECIFICATIONS
ELECTRICAL DATA
Electrical Rating:
 
8 to 30 VAC 50/60 Hz. or D.C.
 
0.05 to 1.0 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:
 
-4°F to 149°F
APPLICATIONS
For use with:
•  Standard heat/cool or heat only systems
•  Electric heat systems
•  Gas or oil fi red systems
•  Gas systems with intermittent ignition devices (I.I.D.)
  and/or vent dampers
•  Hydronic (hot water or steam) systems
•  Single-stage heat pump systems (no auxiliary heat)
• Millivolt systems
DO NOT USE WITH:
• Multi-stage systems
•  Systems exceeding 30 VAC and 1.5 amps
•  3-wire zoned hydronic heating systems
PART NO. 37-6910A
0806
875
Programmable Electronic Digital Thermostat
INSTALLATION AND
OPERATION INSTRUCTIONS
WARNING
!
CAUTION
!