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PRODUCT DATA
® U.S. Registered Trademark
Copyright © 1998 Honeywell Inc. • All Rights Reserved
T8112D
Programmable Thermostat
GENERAL
The T8112D Programmable Thermostat provides energy
savings for single-stage heating and cooling applications
while providing reliable, precise temperature control.
FEATURES
• 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.
• Compatible with most 24 Vac standing pilot, gas
electronic ignition, oil or central electric systems.
• Requires two AA alkaline batteries.
• LCD flashes
bAt Lo
indicating low battery power.
• Isolated heating/cooling circuits.
Contents
General ............................................................................... 1
Features .............................................................................. 1
Specifications ...................................................................... 2
Ordering Information ........................................................... 2
Installation ........................................................................... 3
Programming the Thermostat ............................................. 6
Checkout and Settings ........................................................ 7
Troubleshooting ................................................................... 8
68-0206