Honeywell SUPERSTAT User Manual

Programmable

Load Controller

USER’S GUIDE

Weekday/Weekend

(5-day/Saturday/

Sunday)

Programmable

Heat and/or Cool

Conventional

and Heat Pump

T7512A,B,C

Scientific

Atlanta

Honeywell

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Welcome to the world of comfort and energy savings with your new Scientific Atlanta/ Honeywell SuperStat thermostat.

to take advantage of special programs you can subscribe to that can increase your energy savings further.

This thermostat allows full weekday/weekend programming so that you can set the thermostat to control the temperature in your home according to your personal schedule and preferences. When programmed according to the instructions in this guide, the features available with this thermostat will not only keep you comfortable, but will also save you energy.

In addition to being programmable, this thermostat also contains a communications module. This module allows your utility company to communicate with your thermostat

These special programs can include one or both of the following:

Time-of-Use Pricing. If your utility offers Timeof-Use Pricing rates, this thermostat will communicate with the utility to inform you of the rate in effect at any given time. The rate that is in effect is indicated on the thermostat display as shown in Fig. 1. A special feature of this thermostat allows you to set an offset temperature that automatically adjusts your energy use for each rate. This typically involves controlling your home at a higher temperature

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during the cooling season and a lower temperature during the heating season.

TUE

1 2 3 4

COOL AUTO

word SAVING is displayed on the thermostat. See Fig. 2. You must subscribe to these programs before your utility company can communicate with your thermostat. If you have any questions concerning the application of this thermostat or these special programs and features, please contact your local utility.

INDICATOR FOR TIME-OF USE PRICING

M7904

Fig. 1. Time-of-Use Pricing indicator.

Direct Load Control. If your utility offers Direct

Load Control, this thermostat can be controlled by your utility to limit your cooling and heating use during peak demand times. When your thermostat is under Direct Load Control, the

TUE SAVING

SAVINGS INDICATOR

COOL AUTO

M7903

Fig. 2. Saving indicator.

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Table of Contents

Recovery From Setback ................................................................................................................. 5

Programming Your Thermostat ....................................................................................................... 6

Personal Programming Charts ........................................................................................................ 8

Step 1—Set the Current Time/Day .......................................................................................... 10

Step 2—Enter the Program Schedules .................................................................................... 10

Step 3—Set the System and Fan Controls .............................................................................. 13

Step 4—Start the Thermostat Program ................................................................................... 14

Operating Your Thermostat ............................................................................................................. 15

Thermostat Operation When Special Programs are in Effect ......................................................... 19

Replacing the Thermostat Batteries ................................................................................................ 21

Troubleshooting Guide .................................................................................................................... 23

Typical Energy Savings................................................................................................................... 28

Warranty Conditions........................................................................................................................ 31

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RECOVERY FROM SETBACK

The term thermostat uses to operate the heating or cooling equipment to return the house from the energy savings setting you select when you are away or asleep to the temperature you prefer when you are home and awake.

recovery

refers to the process the

and begin warming the house to 72°F. If you want the temperature in the house to be 72°F at 6:00 AM, you should program the thermostat to an earlier time; for example, 5:30. (The exact amount of time it takes your home to warm or cool to the temperature you want depends on many factors such as the size of your heating/ cooling equipment and the outdoor temperature.)

This thermostat uses a recovery process that turns your heating/cooling equipment on or off at the time you program the temperature to change. For example, if you program the thermostat’s heating program to 72°F at 6:00 AM, the heating equipment will come on at 6:00 AM

If this thermostat is for a heat pump system, the thermostat uses an algorithm when recovering from setback that helps reduce the use of auxiliary heat.

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PROGRAMMING YOUR THERMOSTAT

IMPORTANT

Batteries must be installed to maintain time and date in the event of power loss.

You will find it helpful to complete the Personal Programming Charts on the following pages before you begin programming the thermostat.

Plan your program schedule of time and temperature settings for various times of the day by filling in the boxes in the Personal

Programming Charts. There are four time periods available for weekdays, Saturday, and Sunday—WAKE, LEAVE, RETURN, and SLEEP. These periods can be displayed individually on the thermostat as you press the

WEEKDAY SCHEDULE or WEEKEND SCHEDULE keys. You may want to enter a

different schedule for both the cooling and heating seasons.

WAKE is the time you get up. Generally you

want the house at a comfortable temperature when you wake up and get ready to go to work or school. Set the WAKE time earlier than your alarm clock so the house has time to warm up or cool down before you get up.

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LEAVE is the time you leave for work or

school. Generally, once you leave the house, you want the temperature higher or lower (depending on the season) so that you can save energy while you are away.

RETURN is the time you return from work or

school. Once again, you want the house at a comfortable temperature when you return and go about the normal activities of your day before bedtime. Set the RETURN time earlier than the time you actually get home so the house has time to warm up or cool down before you get there.

SLEEP is the time you usually go to sleep.

While you are sleeping, you can save

energy by setting the thermostat to control the temperature higher or lower (depending on the season). For more comfortable sleeping, some people choose not to raise the cooling temperature at night.

If you decide not to program the thermostat, it automatically controls heating and cooling temperatures as follows. Starting at 6:00 AM every day, the thermostat sets the heating temperature to 68° and the cooling temperature to 76°F. At 10:00 PM every night, the thermostat sets the heating temperature back to 60°F; the cooling temperature remains at 76°F.

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You do not need to enter a time and temperature program for every period if your schedule does not require it. For example, if your house is occupied during the day on weekdays, you can program only the WAKE and SLEEP times.

NOTE: Temperatures cannot be set any

higher than 88°F or any lower than 45°F.

Personal Programming Charts

Cooling Schedule (for Summer Use):

Time Cooling Temperature

Weekday WAKE

LEAVE RETURN SLEEP

Saturday WAKE

LEAVE RETURN SLEEP

Sunday WAKE

LEAVE RETURN SLEEP

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Heating Schedule (for Winter Use): If you subscribe to Time-of-Use Pricing, use the

Time Heating Temperature

Weekday WAKE

LEAVE RETURN SLEEP

Saturday WAKE

LEAVE RETURN SLEEP

Sunday WAKE

LEAVE RETURN SLEEP

following table to plan the offsets you will enter for each Time-of-Use Pricing rate. You should enter different offsets for the heating and cooling seasons. You do not need to enter an offset for rate 1.

Offsets for

Cooling Season (+)

Rate 2 Rate 3 Rate 4 Rate 2 Rate 3 Rate 4

Offsets for

Heating Season (-)

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Before programming the thermostat, remove the clear plastic overlay that covers the display. When pressing the keys, use the ball of your finger or a soft pencil eraser; using sharp fingernails or pencil points can damage the keypad. If you make a mistake during programming, press the RUN PROGRAM key and reprogram the time, temperature, or offset with the error.

Step 1—Set the Current Time/Day

To set the time, press and release the SET CLOCK/DAY key once. Press AHEAD or BACK keys until the current time is displayed. To set the day, press and release the SET CLOCK/DAY key again. Press AHEAD or

BACK keys until the current day is displayed.

After you have set the time and day, press the

RUN PROGRAM key.

Step 2—Enter the Program Schedules

Entering a Heating Schedule

Refer to your Personal Programming Charts and proceed as follows:

Press the SYSTEM key until the thermostat

displays the word HEAT to indicate you are in the heating mode. Press and release the WEEKDAY SCHEDULE key once. The words WAKE, MON...FRI and SET appear on the display.

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