Specifications

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Heat - If “Heat Setting” is displayed on the top right of the display, simply press the UP or DN button
to change the heat set point. If “Cool Setting” is displayed and you want to change the Heat set
point, press the Heat/Cool button twice to change from “Cool Setting” to “Heat Setting”. Then press
the UP or DN button to change the set point.
Cool - If “Cool Setting” is displayed on the top right of the display, simply press the UP or DN button
to change the cool set point. If “Heat Setting” is displayed and you want to change the Cool set
point, press the Heat/Cool button twice to change from “Heat Setting” to “Cool Setting”. Then press
the UP or DN button to change the set point.
Changing Mode
The thermostats are auto changeover, but specific modes may be selected. Auto mode is the
default.
Heat only – Press and hold the Menu button and note the mode display begin to change. Press
the Select button when Heat is displayed.
Emergency Heat - Press and hold the Menu button and note the mode display begin to change.
Press the Select button when Emg is displayed.
Cool only - Press and hold the Menu button and note the mode display begin to change. Press the
Select button when Cool is displayed.
System Off - Press and hold the Menu button and note the mode display begin to change. Press
the Select button when Off is displayed.
Auto mode – Press and release the Menu button.
Override
When the thermostat displays “Unoccupied” (top of display), a 2-hour temporary override may be
initiated by pressing the Override/Select button. When additional override time is required, press
the Override/Select button again.
Reheat
The ModStat can be field configured for reheat operation, including Fan Powered Boxes. To set
the ModStat for Reheat, press and hold the Heat/Cool
and Select buttons together and then press
the Menu button; release all three buttons and the ° symbol will appear next to the heat and cool set
point temperature display.
NOTE: An air proving switch must be wired into the AUX output to protect the electric heating
devices.
Heat Call – The ModStat will send a signal for demand heating when the space temperature drops
1° below the heat set point temperature. If the temperature drops 2° below the heat set point
temperature, the AUX output will energize for auxiliary heat. The thermostat will end the active call
when the space temperature meets the heat set point.
When configured for Reheat, if the space temperature drops below the heat set point, the ModStat
will modulate the damper to 40% open. When the temperature drops one more degree, the AUX
terminal energizes the duct heat strip. The heat call will terminate when the space temperature
reaches the heat set point temperature. The “AUX” output will de-energize, and the damper will
modulate closed. If the system goes into the ventilation mode, the damper will then modulate open.