White Rodgers 1F81-261 Installation Instruction

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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.
 
 DESCRIPTION
Your new White-Rodgers 5-Day/1-Day/1-Day Digital 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 5-day (weekday), 1-day (Sat) and 1-day (Sun) pro-
gramming  with  four  separate  time/temperature  periods  per 
day
•  Simultaneous heat and cool program storage
•  Preprogrammed temperature control
•  LCD  continuously  displays  set  point,  and  alternately  
displays time and room temperature
•  Backlit display when any key is pushed
•  Temperature override until next program period
•  Manual program override (HOLD temperature)
•  Temporary HOLD
•  °F/°C convertibility
•  Temperature range 45° to 90°F
•  R, C, W, W2, G, Y and Y2 terminals
•  Optional C terminal (Dual Power option)
•  Program storage in case of power loss.
•  2 “AA” Energizer
®
alkaline batteries included.
 
 SPECIFICATIONS
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: 
-4°F to 150°F
APPLICATIONS
For use with:
•  Heat/cool systems with up to two stages heat, two
stages cool
DO NOT USE WITH:
•  Millivolt systems
•  Systems exceeding 30 VAC and 1.5 amps
•  3-wire zoned hydronic heating systems
1F81-261
Programmable Electronic
Digital Multi-stage Thermostat
INSTALLATION AND 
OPERATION INSTRUCTIONS
PART NO. 37-6228C
Replaces 37-6228B
1011
 
 PRECAUTIONS
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 qualified heating and air conditioning contrac-
tor 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.
Operator:  Save these instructions for future use!
WARNING
!
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.
Thermostat  installation  and  all  components  of  the 
system shall conform to Class II circuits per the NEC 
code.
CAUTION
!
To prevent electrical shock and/or equipment damage, 
disconnect electric power to system at main fuse or 
circuit breaker box until installation is complete.
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