Unit installation

DCN: 141-00885-16 1/26/06 TZ40 Thermostat Manual 5
Thermostat Control Screen
Thermostat Control Screen Buttons
Thermostat Control Screen - UP and DOWN Buttons
The UP and DOWN buttons adjust the setpoint temperature.
Pressing the UP button will increment the setpoint value by one
degree and conversely, pressing the Down button will decrement
the setpoint one degree. Pressing and holding a button down
will cause the setpoint to continuously change until the button is
released.
The setpoints can be set from 40°F to 106°F ( 5°C to 37°C), unless limited in the Installer Settings.
Setpoint Push: Note that you cannot lower the cooling setpoint below the heating setpoint. The
thermostat will “push” the heating setpoint lower if try to lower the cooling below the heating setpoint. It
maintains a 3 degree separation between the heating and cooling setpoint. The same is true for raising
the heating setpoint above the cooling setpoint. Again the thermostat will “push” the cooling setpoint up to
maintain the 3 degree separation.
Thermostat Control 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
q Main Menu Screen
§ Messages
§ Schedules
§ User Settings
§ Thermostat Info
Thermostat Control Screen - MODE Button
The MODE button controls the HVAC system mode. The current mode selected is displayed above the
button. Pressing 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 press 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
Off Mode: System is off. No heating or cooling will come on. If it was on, the system will turn off.
Heat Mode: Only heating will occur.
RUN
AUTO
FAN
OFF
MODE
MENU
RUN
AUTO
FAN
OFF
MODE
MENU