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3.0 Front Panel Display/Keypad Operation
The Quest BACnet T‐Stat has a 2X16 character backlit LCD display and five buttons for status review and
programming. The backlit is normally off but will turn on with a press of any key. The backlight will turn
off after a few seconds of no keys being pressed. The first press of the keypad will turn on the backlight
and tell the T‐Stat to be ready for additional key presses. All keypad operation described below is after
you press and release any key to enable the backlight.
3.1 Run Mode
The display will show the current day of the week and time along with
the zone sensor reading on the top line. The second line will show the
system status i.e. calling for cooling or heating along with the fan
status of ON or Auto. Additional status information can be reviewed by pressing the left or right arrow
keys. This will cycle the display on the second line to show: Occupied status, current setpoints, control
mode, Fan proof status and supply air reading.
3.2 Occupied Override
Press the center button until the T‐Stat asks if you want to enter
occupied override mode. The default value is No, so use the up or
down arrow to change the value to Yes. Then press the center button
again to accept your choice. If you choose Yes then the T‐Stat will be in occupied override mode for the
programmed delay time or unless the user presses the center button again to disable the occupied
override mode.
3.3 Adjusting Setpoints
The T‐Stat will allow users to adjust the setpoints up or down based
upon the allowable amount programmed into the T‐Stat. Press either
the up or down arrow until the Setpoint Change message appears on
line one. Then use the up/down arrows to increase or decrease the setpoints. Note both the heat and
cool setpoints will move the same amount to maintain the factory specified operating window. The pre
programmed limit will prevent the user from adjusting the setpoints out of the allowable range. Press
the center button to accept your changes. These changes will stay in place during the occupied hours
and reset when the Stat goes into unoccupied. If the Stat was in the unoccupied mode when the user
pressed the up/down arrows it will go into occupied override mode (same as pressing the center button)
and allow the setpoint adjustment.
3.4 Programming the TStat
Press and hold the left and right arrow simultaneously until the display
says Program Choices. The screen is password protected with the
factory default password of 11. Use the up/down arrow keys to change
the password value and press the center button to log in. Passwords can be turned off or changed to
any value from 11 to 99 via BACnet. From this menu use the up/down arrows to navigate to the
BACnet T‐Stat User's Manual Rev 1.1, 7/28/11
Access Code
11
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