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PRODUCT DATA

® U.S. Registered Trademark

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

Honeywell T8112D User Manual

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