Daikin DPS Installation And Maintenance Manual page 35

Low DAT is an adjustable item that sets the duration of a time
period upon unit start up during which the Low Discharge
Temperature fault is ignored . This may be particularly important
in colder climates when a unit has been off for a significant
time period during which the unit, including the discharge air
temperature sensor, has become very cold . This time period
allows the unit to run long enough to turn the unit heat on and
warm the discharge sensor above the alarm limit, preventing
nuisance unit alarm shutdown . This time period begins when
the supply fan starts .
ClgStateDelay is an adjustable item that sets the amount of
time between the fan only operating state and the mechanical
cooling state . The unit will not enter the mechanical cooling
state until this time has passed . This only applies on discharge
control units following morning warm up heating operation .
Clg Stg Time is an adjustable item used to set a minimum time
period between compressor stage changes .
Htg Stg Time is an adjustable item used to set a minimum
time period between heating stage changes .
MinExStrtTime is an adjustable item that sets the minimum
exhaust fan on time (Default = 120 seconds) .
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MinExStopTime is an adjustable item that sets the minimum
exhaust fan stop time (Default = 120 seconds) .
ER Whl Stg Tm is an adjustable item used to set a minimum
time period for operating at either the minimum or maximum
speed before action is taken to change speed during the frost
protect mode of operation .
ER Whl Off Tm is an adjustable item used to set the minimum
amount of time the energy wheel will remain off after being
turned off due to a frosting/condensation condition .
Air Flw Ign is an adjustable item that sets the amount of time
the air proving switch is ignored after the supply fan is started .
Htg Wrmup Tm is an adjustable item which is used to set the
amount of time the gas burner will remain at a low fire position
on 100% OSA units (default 240 seconds) .
Htg Hld Period is an adjustable item used to set the amount of
time that the gas heating valve remains at its calculated value
on units equipped with 100% OA (default 240 seconds) . This
is to allow the temperature to approach equilibrium with the
modulating gas heating valve at a fixed position.
Srvc Time Inc is an adjustable item used to set the internal
stage time delay when the Service Timer is not zero, the times
listed below are set to the ServiceTime (Default = 20 seconds)
instead of the normal values .
• Cooling Stage Time
• Heating Stage Time
• Start Initial Time
• Recirculation
• ZeroOATime
OffHtClDelay is an adjustable item that sets a delay in turning
off the supply air fan when the unit is shut off while cooling or
heating operation is active .
35 OM 1141-3 • MICROTECH UNIT CONTROLLER
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