Daikin MICROTECH 4 Operation Manual page 168

ADvANCED OPERATION
Supply Fans
SAF Set-Up
Table 88: Main Menu \ Advanced Menu \ SAF Set-Up
Menu Display Default
Name
SAF Ctrl Dly 60s
SAFCtrlDlyCap 25 .0%
HtgClgOffCap 33 .0%
SAFVentCap 0%
SAFIncTime 60s
SAFDecTime 60s
Min Fan Nmbr Set to the
half the
number or
master SAF
present
(rounded
down)
AgSAFStrtCap 75%
AgSAFChgInc 5%
AgSAFChgTm 20min
AgSAFRstChg 3°F
SAF1-SAF6 Type NA
Fan P/N -
Fan Size 630 (default
read and
established
via Modbus)
KVal Ovrd 0
DAIKIN APPLIED
Range
0-300s
0-100 .0%
33 .0-100 .0%
0-100%
0-999s
0-999s
1-9
50-100%
1-20%
10-60min
2-10°F
NA
EBM
Delta
************
000-999
000-999
Description
SAF Ctrl Dly is an adjustable item that sets the duration of time
that the minimum speed signal is sent to the variable speed
supply air fan after the supply fan is started via a modbus or
digital output . Control reverts to either duct pressure or speed
after the fan has been on for the SAF CtrlDelay (default 30
seconds) .
SAFCtrlDlyCap is an adjustable item that sets the capacity that
the fan will stay during the SAF Ctrl Dly Timer .
HtgClgOffCap is an adjustable item that sets the capacity the
supply fan will operate at when the unit state is off but the
fan is running due to the Htg/ClgOffDelay being true or if an
compressorized cooling circuit state is Pumpdown .
SAFVentCap is an adjustable item that sets the supply fan
speed with the external ventilation override input to the supply
fan is present .
SAFIncTime is an adjustable value used to set the time it takes
for the supply air fan to ramp from off to 100% speed.
SAFDecTime is an adjustable value used to set the time it takes
for the supply air fan to ramp from 100% speed to off.
Min Fan Nmbr is the Minimum number of fans that are allowed
to be operating on the unit . Less than this number and the unit
will give an airflow fault.
AgSAFStrtCap is an adjustable item used in specific indoor
agriculture applications . This item is used to set the supply fan
starting speed .
AgSAFChgInc is an adjustable item used in specific indoor
agriculture applications . This item is used to set the supply fan
percentage change in speed .
AgSAFChgTm is an adjustable item used in specific indoor
agriculture applications. This item is used to set the timer flag
which is used when measuring the time since the supply fan
speed has changed .
AgSAFRstChg is an adjustable item used in specific indoor
agriculture applications . This item is used to set the value by
which the occupied cooling set point changes in order to change
the supply fan command to the Start Capacity .
An adjustable item to select the number of Supply Air Fans.
Fan P/N is a status only item that indicates the supply fan part
number .
An adjustable item to select the Supply Air Fan diameter.
An adjustable item to enter a piezo ring K-Value which will
override existing value .
168
MICROTECH UNIT CONTROLLER