Unit Operating Modes
function is activated whenever a contact is closed between the appropriate terminals on the unit's terminal strip located in the unit's main control panel. Heating and cooling functions use the Night Setback Setpoints. See the Typical Wiring Schematic and Multiplexed Input sections of this manual for more information. This function can be used with a twist timer, toggle switch, door switch, exhaust fan interlock, or any other dry contact to override the time clock schedule.
Heating/Ventilating/Cooling Operating Modes
The AdaptAire DDC controller automatically switches between the heating, ventilating and cooling modes of operation.
Heating Mode
Heating Mode allows the burner to operate as needed and is activated whenever the room temperature is 2° below the heating setpoint.
General Burner Control
In the Heating Mode the burner will modulate to maintain a constant temperature. To change the desired heating discharge or room temperature of an MDT or MRT control system, rotate the temperature setpoint knob on the remote panel clockwise to the desired temperature.
To change the desired heating room temperature of an
Each push of a button changes the temperature setpoint by 1°F. The setpoint can be changed a maximum of ±10°F from the default of 72°F.
To change the desired heating room temperature of an
Additionally, on all controls systems except the MDT the control system modulates the burner to maintain the supply air temperature within a defined operating window. This window defines the maximum and minimum discharge temperatures.
To change the desired minimum supply or discharge air temperature scroll through the SETPOINTS menu tree, locate the HTG MIN DA Setpoint, and enter a new temperature. This temperature must not be greater than the HTG MAX DA Setpoint. The allowable temperature range is 40°F - 130°F. This sets the lowest discharge air temperature that will leave the unit.
To change the desired maximum supply or discharge air temperature scroll through the SETPOINTS menu tree, locate the HTG MAX DA Setpoint, and enter a new temperature. This temperature must not be less than the HTG MIN DA
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