Honeywell T8112D manual

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Table of contents for the manual

  • Page 1

    PRODUCT DA T A ® U.S. Registered Trademark Copyright © 1998 Honeywell Inc. • All Rights Reserved T81 12D Programmable Thermostat GENERAL The T8112D Programmab le Thermostat provides energy savings f or single-stage heating and cooling applications while providing reliab le, precise temperature control. FEA TURES • HEA T -OFF-COOL System switc[...]

  • Page 2

    T8112D PROGRAMMABLE THERMOST A T 68-0206 2 SPECIFICA TIONS IMPORT ANT The specifications given in this pub lication do not include nor mal man ufacturing tolerances; theref ore, an individual unit might not e xactly match the listed specifications. Also , this product is tested and calibrated under closely controlled conditions, and some minor diff[...]

  • Page 3

    T8112D PROGRAMMABLE THERMOST A T 68-0206 3 INST ALLA TION When Installing this Product… 1. Read these instructions carefully . F ailure to f ollow the instructions can damage the product or cause a hazardous condition. 2. Check the ratings giv en in the instr uctions and on the product and in the compatibility char t (T able 1) to make sure the p[...]

  • Page 4

    T8112D PROGRAMMABLE THERMOST A T 68-0206 4 Fig. 3. Proper wiring tec hnique. M1712A JUMPER (FACTORY- INSTALLED) REMOVE IF 5-WIRE SYSTEM INSERT STRAIGHT UNDER SCREW HEAD 5/16 in. (8 mm) STRIP END OF WIRE VISIBLE HERE R R c WY G Fig. 4. Holding thermostat while installing. M3002A Fig. 5. 2-wire heat-only application (jumper intact). R Rc W Y G B D A [...]

  • Page 5

    T8112D PROGRAMMABLE THERMOST A T 68-0206 5 Fig. 8. 5-wire heat/cool application (jumper remo ved). Adjust Fan Operation Switch, as Required The ther mostat f an operation switch, labeled FUEL SWITCH (see Fig. 9) is factory set in the F position. This is the correct setting for most systems . If y ou have an electric heat system, set the switch to E[...]

  • Page 6

    T8112D PROGRAMMABLE THERMOST A T 68-0206 6 Fig. 10. Removing battery door . M5781 Fig. 11. Installing batteries. Mounting Thermostat 1. Engage the tabs at the top of the ther mostat and mounting plate. See Fig. 12. 2. Press the lower edge of the case to latch. NO TE: T o remov e the ther mostat from the w all, first pull out the bottom of the ther [...]

  • Page 7

    T8112D PROGRAMMABLE THERMOST A T 68-0206 7 T o check the current temperature setting: Press the Run Program k ey . (When using TEMPORARIL Y CHANGE or HOLD , pressing this key will cancel the change or hold.) T o check the programs: 1. Press the Schedule ke y repeatedly to see each time and temperature. 2. Press the Run Program key . T o cancel a pr[...]

  • Page 8

    T8112D PROGRAMMABLE THERMOST A T 68-0206 8 Home and Building Control Honeywell Limited-Honeywell Limitée 155 Gordon Baker Road North York, Ontario M2H 3N7 68-0206 L.C. 2-98 Printed in U .S.A. Home and Building Control Honeywell Inc. 1985 Douglas Drive North Golden Valley, MN 55422 Printed on recycled paper containing at least 10% post-consumer pap[...]