Daikin MicroTech I User Manual

Dehum Method is an adjustable item used to set the
dehumidication method to either “RH” or “DewPt.” When
this parameter is set to “RH,” dehumidication operation is
controlled to maintain the Rel Humidity value at the Relative
Humidity Set Point. When this parameter is set to “DewPt,”
dehumidication operation is controlled to maintain the Dew
Point= value at the Dew Point Set Point. When this parameter
is set to “Always” dehumidication will be active as long as
mechanical cooling is not disabled.
RH DB is an adjustable item that sets a dead band around
the relative humidity set point. For example, if the RH Setpoint
parameter is set to 50% and the RH Db parameter is set to 2%
the dead band around the set point would be from 49% to 51%.
Dewpoint DB is an adjustable item that sets a dead band
around the dew point set point. For example, if the DewPoint
Spt parameter is set to 50ºF and the DewPntDb parameter is
set to 2ºF the dead band around the set point would be from
49ºF to 51ºF.
RH Period is an adjustable item which sets the “sampling time”
used in the PI control function for controlling the reheat valve.
RH Gain is an adjustable item which sets the “Gain” used in
the PI control function for controlling the reheat valve.
RH PAT is an adjustable item which sets the “project ahead
time” used in the PI control function for controlling the
reheat valve.
RH Max Chg an adjustable item that sets the maximum value
for an increase or decrease for controlling the reheat valve.
LSC Lo Gain - is an adjustable item which sets the “Gain”
used in the PI control function for controlling the liquid
subcooling reheat valve.
RH Stg Time is an adjustable item is an adjustable item
which sets a stage time period for controlling reheat on units
equipped with a single stage of hot gas reheat.
Stg Rht DB is an adjustable item which sets a dead band
around the reheat setpoint parameter.
Dehum Ctrl is an adjustable item used to select whether
dehumidication as “always” allowed or only during “occupied”
modes of operation.
Sensor Loc is an adjustable item which is used to select the
location of the humidity sensor. The location is selected by
setting the Sensor Location value on the keypad to Return,
Space, or OAT. The signicance of the sensor location is that
this determines which temperature sensor is use to calculate the
Dewpoint. OAT can only be selected for units with DAT control.
Mn Lvg Coil T is an adjustable item which is used to set the
minimum leaving coil temperature (Default = 45°F).
Mx Lvg Coil T is an adjustable item which is used to set the
maximum leaving coil temperature (Default = 52°F).
Rht Cmp Lmtg is an adjustable item used to enable or
disable the Compressorized Reheat Cooling Capacity
Limiting Function.
Min Reheat Spt is an adjustable item which is used to set the
minimum DAT during dehumidication.
Max Reheat Spt is an adjustable item which is used to set the
maximum DAT during dehumidication.
RH Sen Type is an adjustable item used to dene the eld
supplied humidity sensor input signal type.
RH Min Signal is an adjustable item used to dene the
minimum value of the eld supplied humidity sensor current or
voltage signal.
RH Max Signal is an adjustable item used to dene the
maximum value of the eld supplied humidity sensor current or
voltage signal.
Min Dehum Spd is an adjustable item used to set the
minimum supply fan VFD speed during dehumidication.
Max Dehum Spd is an adjustable item used to set the
maximum supply fan VFD speed during dehumidication.
Rht Min Pos is an adjustable item used to set the minimum
position of the reheat valve when the PI loop is active.
RH Dec Rate is an adjustable item used to set the rate of
decrease for the reheat valve, where the unit leaves the
dehumidication operation.
OM 920-6 • MICROTECH UNIT CONTROLLER 52 www.DaikinApplied.com
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Daikin MicroTech I Specifications

General

Brand	Daikin
Model	MicroTech I
Category	Controller
Language	English