1 68-0148—1 B.M. • Rev. 6-94 • ©Honeywell Inc. 1994 • Form Number 68-0148—1
T8131A,B,C; T8132A,B,CProgrammable Thermostats

The T8131 and T8132 Thermostats provide

energy savings for single-stage heating and cool-

ing applications while providing reliable, precise

temperature control.

T8131/T8132 Models
■HEAT-OFF-COOL system switch.
■AUTO-ON fan switch.
■Separate programs for weekdays and weekends
5 day/2 day.
■Digital LCD display.
■Easy to program and install.
■Precise temperature control.
■Four daily energy saving programs.
■Available in taupe and Premier White™.
■Compatible with most 24 Vac standing pilot, gas
electronic ignition, oil or central electric systems.
T8131 Models Only
■Powered directly from 24 Vac system transformer.
■Green light emitting diode (LED) lights when prop-
erly connected.
■Two AA alkaline batteries for backup power
recommended.
T8132 Models Only
■Requires two AA alkaline batteries.
■LCD flashes “bAt Lo” indicating low battery power.
■Isolated heating/cooling circuits.
T8131C
T8132C
CONTENTS
Specifications ................................................ 2
Ordering Information.................................... 2
Installation .................................................... 3
Programming the Thermostat ....................... 8
Checkout and Settings ................................. 10
Troubleshooting .......................................... 11
Cross Reference .......................................... 12