VI. Install Accessories

B. Electric Heat Con®guration (Step 5)

Step 5 is used to con®gure the thermostat for electric heat. The variable can be con®gured ON or OFF. The default is OFF.

NOTE: Step 5 will appear only if Step 3 is set to OFF.

C. Deadband (Step 6)

The deadband is the difference in temperature above the cooling set point or below the heating set point that the ther- mostat will wait before turning on the ®rst stage of heat- ing or cooling. For example, if the cooling set point is 82 F (28 C) and the deadband is 2 degrees, the ®rst stage of cool- ing will not be energized until the temperature reaches 84 F (30 C). The range of values is 1 to 6 degrees. The default is 2 degrees.

D. Set Point Minimum Difference (Step 7)

The minimum difference between heating and cooling set points can be user-con®gured. The range is from 0 to 6 degrees. The default is 2 degrees. The minimum difference is enforced dur- ing Auto-Changeover and Program On operation.

E. Cycles Per Hour Limit (Step 8)

The number of times that heating or cooling can be ener- gized per hour can be con®gured. Set the variable to ``d'' for no limit. Set the variable to ``d1'' to disable the 5-minute com- pressor lockout. The variable can also be set from 2 to 6 cycles per hour. The default is 6 cycles per hour.

CAUTION: Damage to compressor could result if 5-minute compressor lockout is disabled or compressor is allowed unlimited cycles. Do not set thermostat Advanced Setup Step 8 to ``d'' or ``dl'' unless speci®cally recommended for the application.

F. Backlight Display (Step 9)

The display backlight can be set to ON (always on) or OFF (turn off 8 seconds after usage). The default is ON.

G. Service Filter (Steps 10 and 11)

Step 10 allows the user to reset the Service Filter counter to zero and remove the ``SERVICE FILTER'' icon (if displayed on the thermostat screen). Press the FAN button while in Setup Step 10 and the counter is reset to zero. Press the Mode but- ton to adjust the number of hours the blower will run before the ``SERVICE FILTER'' icon is displayed. The range is 0 to 1950 hours. Set the variable to 0 to disable this function. The default is 500 hours.

H. Fahrenheit/Celsius Operation (Step 12)

The thermostat can be set to operate in Fahrenheit or Cel- sius degrees. Set the variable to ``F'' for Fahrenheit opera- tion. Set the variable to ``C'' for Celsius operation. The default is ``F.''

I. Security Level (Steps 13 to 15)

The Security Level limits the actions that the user can per- form at the thermostat. There are 4 security levels. When the security level is set to ``0,'' no security will be in effect. When the security level is set to ``1,'' the set point range is limited by the settings of Steps 14 and 15. When the security level is set to ``2,'' the set point range is limited by the settings of Steps 14 and 15 and the Program On mode is always in ef- fect. When the security level is set to ``3,'' the set point range is limited by the settings of Steps 14 and 15, the Program On mode is always in effect, and set point changes are prohib- ited. The default is 0.

Security Maximum Heat Set Point (Step 14)

If the Security Level is not set to 0, the maximum heating set point will be in effect. The user will not be allowed to set the heating set point over the speci®ed value. The range of values is 35 to 99 F (1 to 37 C). The default is 80 F (27 C).

Security Minimum Cool Set Point (Step 15)

If the Security Level is not set to 0, the minimum cooling set point will be in effect. The user will not be allowed to set the cooling set point below the speci®ed value. The range of val- ues is 35 to 99 F (1 to 37 C). The default is 65 F (18 C).

The following accessory can be used with this thermostat:

Add-a-Wire™ accessory (TSTATBBPACC-AW).

Refer to the accessory installation instructions for the acces- sory for more information.

VII. PROGRAM THERMOSTAT SCHEDULES

Before programming the thermostat, plan the thermostat daily schedule. The schedule is divided into 7 days (Monday through Sunday). Each day has from 2 to 4 time periods (Occupied 1, Occupied 2, Occupied 3, Unoccupied) depending on the con- ®guration of the thermostat. Each occupied time period has a start time, stop time, heating set point, and cooling set point. The unoccupied time period has a heating set point and a cooling set point. The unoccupied time period is active when ever an occupied time period is not active. Fill in Table 3 as an aid to programming the daily schedules.

NOTE: When the sensor detects light (the space is occupied), the thermostat will enter Occupied 1 mode. If the room is dark, the thermostat will follow its programmed schedule. The Occupied 1 schedule should be turned OFF to keep the thermostat from entering Occupied 1 while the room is un- occupied. If the Occupied 1 schedule is turned ON, the ther- mostat will enter Occupied 1 per the schedule regardless of light activation. The Occupied 1 set points are used as the heating and cooling set points during light activation. The Unoccupied set points should be used as non-work hour set points (before 8:00 AM and after 5:00 PM) when using light activation. For times when the building is unoccupied during work hours (Monday through Friday, 8:00 AM to 5:00 PM), the Occupied 2 schedule should be turned ON, and can be used for moderate energy savings with set points of 80 F for cooling and 65 F for heating.

A. Programming Mode

To program the daily schedules, perform the following procedure:

1.Enter programming mode by pressing the Program but- ton. The Occupied 1 annunciator will appear on the ther- mostat display. Use the UP ARROW and DOWN ARROW buttons to set the maximum number of Occupied periods for each day. The thermostat can be set to 1, 2, or 3. After the number of Occupied periods has been selected, press the Mode button. See Fig. 5.

2.The cooling set point for Occupied 1 will be displayed. Use the UP ARROW and DOWN ARROW buttons to raise or lower the cooling set point until the desired temperature is shown. The range of acceptable values is 35 to 99 F (1 to 37 C). Press the Mode button to con- tinue. See Fig. 5.

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