Daikin MicroTech I User Manual

Min OA Damper
Table 10: Min OA Damper Menu
Item Display Name Default Setting Range Password Level
Min OA Pos= - 0–100% 6
Vent Limit= 20% 0–100% 6
LoFlo V Lmt= 30% 0–100% 6
DCV Limit= 10% 0–100% 6
Min OA SCR= —
VentLmt
DesFlw
FldFlw
Network
Ext VDC
Ext mA
IAQ VDC
BSPOvrd
FanDiff
DCVLmt
ZeroOA
4
Min OA Pos is a status only item which indicates the current
minimum position of the outdoor damper. This value does not
go above a value called the Ventilation Limit and does not go
below a value called the Demand Control Ventilation Limit.
On CAV units the Ventilation Limit and the Demand Control
Ventilation Limit are xed values set equal to the Vent Limit=
and DCV Limit= parameters. On VAV units the OA Damper
Position increases from the Vent Limit= value to the LoFloVent
Limit= value as the VFD speed goes from 100% down to the
Min Clg Spd= value. The Demand Control Ventilation Limit in
this VAV case is determined by the Ventilation Limit X DVC
Limit=/Vent Limit=. When the Min OA Reset= parameter is
set to “None” the Min OA Pos= value is set to the Ventilation
Limit. If Min OA Reset= is set to Network, Ext VDC, Ext mA,
IAQ VDC, or IAQ mA, the Min OA Pos= varies between the
Ventilation Limit and the Demand Control Ventilation Limit as
the reset signal varies from its maximum to minimum value.
Vent Limit is an adjustable item that sets the value of the
Ventilation Limit on a CAV unit or when a VAV unit is at 100%
discharge fan speed.
LoFlo Vent Limit is an adjustable item that sets the maximum
value for the Ventilation Limit on a VAV unit. The ventilation
limit is raised toward this value as the discharge fan speed
decreases toward the Min Clg Spd value.
DCV Limit is an adjustable item that sets the value of the
Demand Control Ventilation Limit on a CAV unit or when a
VAV unit is at 100% discharge fan speed. This item is only
used when the “Min OA Reset=” is set to something other than
“None.”
Min OA Src = is a status only item that indicates the action that
is winning for control of the OA damper position.
Heating Menu
The Heating menu provides a summary of the control
parameters for units with heating. The unit’s heating mode
of operation is controlled by the control temperature and the
heating setpoint temperature. The unit goes into the heating
mode of operation by analyzing the control temperature.
The control temperature can be return temperature, space
temperature or outside air temperature. The unit goes into the
heating mode of operation when the control temperature is
below the heating setpoint by more than ½ the deadband.
Table 11: Heating Menu
Item Display Name Default Setting Range Password Level
Occ Htg Spt = 68.0°F 0.0–100.0°F 6
Unocc Htg Spt= 55.0°F 40.0–100.0°F 6
MWU Spt= 70.0°F 40.0–100.0°F 6
DAT Htg Spt= 85.0°F 40.0–140.0°F 6
Occ Htg Spt is an adjustable item which sets the control
temperature below which the unit will go into the heating mode
of operation.
Unocc Htg Spt is an adjustable item which sets the zone
temperature below which the unit starts up and provides
unoccupied heating (night setback) during unoccupied periods.
MWU Spt is an adjustable item which sets the heating
setpoint to be used during morning warm up on a discharge
temperature control unit. CAV units use the Occ Htg Spt for
morning warmup operation.
DAT Htg Spt is an adjustable parameter which sets the
heating discharge set point.
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Daikin MicroTech I Specifications

General

Brand	Daikin
Model	MicroTech I
Category	Controller
Language	English