OM 1077-1 • MAVERICK I 24 www.DaikinApplied.com
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Economizer DCV Control
If connected to a CO
2
sensor, the ELM measures and regulates
the amount of outdoor air supplied to the space in order to
maintain the levels of carbon dioxide below the recommended
700ppm above the outdoor levels. In this case, CO
2
levels
serve as a proxy for building occupancy and the rate of human-
generated indoor pollutants.
Once the DCV is operating, the minimum damper position can
then be lowered to the DCV ventilation limit. By default, this
value is 50% of the ventilation limit, but the user has the option
to adjust it through network or human system interface. The
user also has the option to disable DCV altogether.
DCV Level Set Point
The DCV level setpt is a selectable level of carbon dioxide that
the system does not allow to be exceeded. The set point is
communicated to the economizer and the minimum ventilation
position is changed in order to prevent the increase of CO
2
.
External DCV Level
This is the value DDC Controller sends to the Economizer.
Effective DCV Level
This is the actual DCV Level in ppm.
Effective Economizer Position
This is the actual position of the economizer.
Effective Minimum Position Demand Delay
This displays current value of the effective minimum damper
position.
Local Minimum Position
This displays the local minimum position that is set at the ELM.
Economizer Faults
This screen displays any ELM sensor or actuator faults. Check
for proper installation of the sensor or actuator, or replace
the sensor or actuator so the alarm is cleared. Note: The
actuator fault must be present for at least 2 minutes with the
unit powered, the indoor fan running, and the outside damper
commanded to open more than 0% before the alarm is set.
Integrated Furnace Control Screen
This screen shows the information available from the IFC
board. When this device is not connected the control will show
the word “Unavailable” on the second line of the display.
Device ID
This screen displays the IFC software version.
IFC Fault
This screen displays any IFC faults. The faults will also be
displayed on the main DDC Controller fault screen.
IFC Inputs
Status of IFC Inputs
IFC Outputs
Status of IFC outputs