Rf/Ef Control; Cooling; Economizer - Daikin MicroTech III Operation Manuals

RF/EF Control

Table 7: Return/Exhaust Fan Speed Menu
Item Display Name
RF/EF Speed=
Speed Cmd=
Bldg Press=
BldgSP Spt=
RF/EF Speed is a status only item that indicates the current
return/exhaust fan VFD speed .
Speed Cmd is a status only item that indicates the current
return/exhaust fan VFD commanded speed .
Bldg Press is a status only item which indicates the building
static pressure at the building static pressure sensor location .

Cooling

Table 8: Cooling Menu
Item Display Name
Occ Clg Spt =
Unocc Clg Spt=
DAT Clg Spt=
Occ Clg Spt an adjustable item which sets the temperature
above which the unit will go into the cooling mode of operation .
Unocc Clg Spt is an adjustable item which sets the zone
temperature above which the unit starts up and provides
unoccupied cooling (night setup) during unoccupied periods .
NOTE: Setting this to its maximum value will disable
unoccupied cooling .

Economizer

Table 9: Economizer Menu
Item Display Name
OAD/Econo Pos=
DAT Clg Spt=
Min OA Pos=
FreeClgStatus=
Occ Clg Spt =
Unocc Clg Spt=
OAD/Econo Pos is a status only item that is used to
indicate percentage that the economizer dampers/waterside
economizer valve is open .
DAT Clg Spt is an adjustable item used by the controller to
set the DAT cooling setpoint. This value is adjustable only on
DAC units when it is not being set by a reset schedule . It is not
adjustable on CAV units.
Min OA Pos is a status only item which indicates the current
minimum position of the outdoor air damper .
OM 920-6 • MICROTECH UNIT CONTROLLER
Default Setting
-
-
-
0 .050 in
BldgSP Spt is an adjustable item which sets the building static
pressure set point used for controlling the VFD for the return/
exhaust air fan . The VFD is modulated to maintain the building
pressure at this value .
Default Setting
72 .0°F
85 .0°F
55 .0°F
DAT Clg Spt is an adjustable item used by the controller to
set the DAT cooling setpoint. This value is adjustable only on
DAC units when it is not being set by a reset schedule . It is not
adjustable on CAV units.
Default Setting
—
55 .0°F
—
—
72 .0°F
85 .0°F
FreeClg Status is a status only item that indicates whether
airside economizer free cooling is available or unavailable
based on a definable ambient temperature range.
Occ Clg Spt an adjustable item which sets the temperature
above which the unit will go into the cooling mode of operation .
Unocc Clg Spt is an adjustable item which sets the zone
temperature above which the unit starts up and provides
unoccupied cooling (night setup) during unoccupied periods .
NOTE: Setting this to its maximum value will disable
28
Range
0–100%
0–100%
-0 .25–0 .25 in
-0 .25–0 .25 in
Range
0 .0–100 .0°F
40 .0–100 .0°F
40 .0–100 .0°F
Range
0–100%
40 .0–100 .0°F
0–100%
Unavail
Avail
0 .0–100 .0°F
40 .0–100 .0°F
unoccupied cooling .
M d
enu esCrIpTIons
Password Level
6
6
6
6
Password Level
6
6
6
Password Level
6
6
6
6
6
6
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