DCN: 141-01060-13 1/05 TS40 Manual
5
Main Thermostat Screen
The WDU displays both the current heating and cooling setpoints. The Up and Down buttons will change
the setpoint of the current MODE (heating or cooling). When in the AUTO MODE, the buttons will change
the setpoint of the last call’s mode – heating or cooling.
Heating setpoints can be set from 40 to 106 degrees. (5 to 40 deg C)
Cooling setpoints can be set from 44 to 110 degrees. (6 to 44 deg C)
The high setpoints are intended for use with Pool/Spa heating applications.
High and Low setpoint limits can be set in the Installer Settings menu.
Setpoint Deadband and Push
You cannot lower the cooling setpoint below the heating setpoint or raise the heating setpoint above the
cooling setpoint. There is a 4 deg deadband between heating and cooling setpoints. If you try to set the
setpoints closer than 4 degrees, the setpoints will “push” each other to maintain the 4 degree separation.
Changing the heating setpoint up will push the cooling setpoint. Setting the cooling setpoint down will
push the heating setpoint.
Main Thermostat Screen
MENU Button
The Menu button changes the screen display to the MAIN MENU screen which show what other functions
are available on the Thermostat. These are dynamic and can change with the version of the thermostat
you have, but the standard ones include:
Main Thermostat Screen
Menu Button
Main Menu Screen
Messages
Schedules
User Settings
Thermostat Info
Main Thermostat Screen
MODE Button
The MODE button controls the HVAC system mode. The current mode selected is displayed above the
button. Pushing the MODE button will cause the mode and display to change to the next mode. The
system mode cycles from Off to Heat to Cool to Auto and back to Off again with each push of the MODE
button. When the HVAC system type is set to Heat Pump, the mode selection will include EH for
Emergency Heat mode.
Mode Button
Off
Heat
Cool
Auto
EH (if HP system type)
Off Mode: System is off. No heating or cooling will come on.
RUN
AUTO
FAN
OFF
MODE
MENU
RUN
AUTO
FAN
OFF
MODE
MENU
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General