3. Function
CO2 Interlocking Control
– Enable/Disable the CO
2
interlocking Function
Setpoint
– Target Space CO
2
set point
Fan Stop Setpoint
– Space CO
2
set point of Fan stop
Hysteresis
–CO
2
Value hysteresis.
Control Feedback Cycle (sec.)
– Set CO2 interlocking control cycle.
Fan Control Step
– Fan speed modulation range to maintain Space CO
2
set point.
Soft Shutdown
Setpoint
– Soft shutdown target leaving air temperature
Auto Dry
Setpoint
– Supply Fan delay time for drying the heat exchanger. (Seconds)
Power Loss Auto Restart
– Set to automatically restart power failure compensation.
Shutdown Alarm Auto Restart
– Set to restart automatically after an error occurs.
Forced Operation
– Set DOAS Unit continues to operate even when an error occurs
.
4. Temperature Control
Control Mode
– Temperature Control Mode setting
Supply Temperature Control
: The supply discharge set point is a constant value (e.g.72°F). Reference
Temperature Set point screen for set point adjustment.
Space Reset
: The controller will reset the supply air temperature set point to maintain the space
temperature set point (requires space temp sensor).
Temperature Setpoint (Occupied)
– Target temperature setpoint.
Start Up Delay (sec.)
– Tempering operation starts after Start up
delay.
Cooling
Lock
out
– Set cooling lock out temperature. Cooling is disabled when the outside temperature is
below the set value
Heating
Lock
out
– Set heating lock out temperature. Heating is disabled when the outside temperature is
higher than the set value.
Heat
Cool
Deadband
– The heat cool deadband allows for separate cooling and heating entering condition
Unoccupied Cooling
Setpoint
– Set the cooling enable reference temperature in unoccupied mode. The cooling operation is
activated when the outside temperature is higher than the set tempe hysteresis value / 2.
Hysteresis
– Set temperature hysteresis for cooling operation in unoccupied mode.
Unoccupied Heating
Setpoint
– Set the heating enable reference temperature in unoccupied mode. The heating operation is
activated when the outside temperature is lower than the set temperature
– hysteresis value / 2.
Hysteresis
– Set temperature hysteresis for heating operation in unoccupied mode.
Control Feedback Cycle (sec.)
– Set temperature control cycle.
Main Coil Control Step
– Set main coil control step.
5. Fan Control
Supply Fan
Control Mode
– Set supply fan control mode
Constant
Volume
: F
an is controlled by the proportional percentage value of the fan’s RPM
Air
Volume
Control
: Fan is controlled by direct Airflow value (CFM)
Control Feedback Cycle (sec.)
: Set the fan control cycle;
Control
Step
: Set the fan control step used in constant volume.
Exhaust Fan (Rooftop DOAS Only)
Control Mode
– Set exhaust fan Control Mode
Constant
Volume
: F
an is controlled by the proportional percentage value of the fan’s RPM
Air Volume Control
: Fan is controlled by direct Airflow value (CFM), if DP sensor is equipped
Supply Fan Tracking (Offset)
: Set the proportional percentage value of the Supply fan speed.
Control Feedback Cycle (sec.)
: Set the fan control cycle.
Control
Step
– Set the fan control step used in constant volume.
Fan Operation On Defrost mode
– Set fan operation mode in defrosting
Fan
On (Designed Airflow rate)
: Fan runs without change
Fan On (minimum)
: Fan runs at the lowest fan speed.
Fan Off
: Fan stop.
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