Daikin DPS Installation And Maintenance Manual page 47

AplyMinOAChg this flag must be changed from No to Yes in
order for the controller to recognize the changes to the MinOA
Reset parameter. Setting this flag to Yes will automatically
reset the controller .
Min OA Reset is an adjustable item that sets the type of
minimum OA damper position reset to be used . When this
is set to "None" the Min OA Pos= parameter is set to the
Ventilation Limit . When this is set to "Network," "Ext VDC," "Ext
mA," "IAQ VDC," or "IAQ mA" then the Min OA Pos= parameter
varies from the Ventilation Limit down to the Demand Control
Ventilation Limit as the reset signal goes from its maximum to
minimum value .
NOTE: When the Min OA Reset type is set to Network and
the Apply changes flag is set to yes, the value of the
Vent Limit is automatically set to 100%, the value of
the DCV limit is set to 0% and the LoFlo V Lmt is set
to 0% .
BSP OA Ovrd is an adjustable item used to enable/disable the
building static pressure override feature .
Rst Lmt Snsr is an adjustable item used to set the sensor to
be used in conjunction with the OA reset limit function .
OA @ MinV/mA is an adjustable item used when Min OA
Reset= is set to "Ext VDC" or "Ext mA" to define the Min OA
Pos= is when the field signal is at minimum value.
NOTE: Min OA Pos= is limited above the Demand Control
Ventilation Limit .
OA @ MaxV/mA is an adjustable item used when Min OA
Reset= is set to "Ext VDC" or "Ext mA" to define the Min OA
Pos= when the field signal is at the minimum value.
NOTE: Min OA Pos= is limited below the ventilation limit .
Min V/mA is an adjustable item used to set the minimum value
of the field input signal.
Max V/mA is an adjustable item used to set the maximum
value of the field input signal.
IAQ Reset is an adjustable item which enables and disables
outside air minimum position reset based on a field supplied
CO sensor input .
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PPM @ DCV Limit is an adjustable item used when Min OA
Reset= is set to "IAQ VDC" or "IAQ mA" to define at what
PPM value the Min OA Pos= is to be at the Demand Control
Ventilation Limit value .
PPM @ Vent Limit is an adjustable item used when Min OA
Reset= is set to "IAQ VDC" or "IAQ mA" to define at what PPM
value the Min OA Pos= is to be at the Ventilation Limit value .
IAQ PPM is a status only item which indicates the current
reading from the CO sensor .
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Min PPM is an adjustable item that sets the minimum PPM
value .
Max PPM is an adjustable item that sets the maximum PPM
value .
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V/mA @ Min PPM is an adjustable item that sets the minimum
PPM value at the minimum DC voltage or mA value of the CO
sensor used when Min OA Reset= is set to "IAQ VDC" or "IAQ
mA ."
V/mA @ Max PPM is an adjustable item that sets the
maximum PPM value at the maximum DC voltage or mA value
of the CO sensor used when Min OA Reset= is set to "IAQ
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VDC" or "IAQ mA ."
OA Flow is a status only item which indicates the current
outdoor airflow based on an optional OA airflow sensor input
used when the unit is equipped the DesignFlow OA control
feature, or a field supplied OA measuring station.
Min OAFlw Spt is an adjustable item that is used to set the
minimum design flow CFM's when the unit is equipped with the
optional DesignFlow OA control feature, or a field supplied OA
measuring station .
Field Stn Reset is an adjustable item which enables and
disables outside air minimum position reset based on a field
supplied airflow station input.
Field Stn Cfg is an adjustable item used to select the type
of input for a field installed airflow station. This parameter is
set to VDC or mA to match the input type of the field supplied
airflow input.
Min CFM is an adjustable item that sets the minimum CFM
value of the field supplied flow station.
Max CFM is an adjustable item that sets the maximum CFM
value of the field supplied flow station.
V/A @ Min CFM is an adjustable item that sets the sensor
input value at minimum CFM reading .
V/A @ Max CFM is an adjustable item that sets the sensor
input value at maximum CFM reading .
OA CFM DB is an adjustable item which sets the "deadband"
used in the control function that modulates Min OA Pos
parameter to maintain the OA Flow parameter at the MinOA
Flow set point when a unit is equipped with the optional
DesignFlow outdoor airflow measuring feature, or a field
supplied OA measuring station .
OA CFM Period is an adjustable item which sets the "sampling
time" used in the PI control function that modulates the Min
OA Pos parameter to maintain the OA Flow parameter at the
MinOA Flow set point when a unit is equipped with the optional
DesignFlow outdoor airflow measuring feature, or a field
supplied OA measuring station .
OA CFM Gain is an adjustable item which sets the "Gain"
used in the PI control function that modulates the Min OA Pos
parameter to maintain the OA Flow parameter at the MinOA
Flow set point when a unit is equipped with the optional
DesignFlow outdoor airflow measuring feature, or a field
supplied OA measuring station .
47 OM 1141-3 • MICROTECH UNIT CONTROLLER
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