56
performance static pressure and cfm can be easily adjusted using
the traditional means of pulley adjustments. The other means to
adjust the unit static and cfm performance is to utilize the field in-
stalled display module and adjust the frequency and voltage in the
VFD to required performance requirements. In either case, once
set up the VFD will automatically adjust the speed between the
cooling stage operation.
581J 2-SPEED INDOOR FAN SYSTEM — VARIABLE
FREQUENCY DRIVE (VFD) HP RATING
Application/Selection Option — Selection software by
Bryant saves time by performing many of the steps above. Con-
tact your Bryant sales representative for assistance.
UNIT SIZE
STATIC
OPTION
VOLTAGE VFD HP
17
STD
208/230 3.0
460 3.0
575 5.0
MED
208/230 3.0
460 5.0
575 5.0
HIGH
208/230
7.5460
575
20
STD
208/230 3.0
460 5.0
575 5.0
MED
208/230
7.5460
575
HIGH
208/230
7.5460
575
24
STD 208/230/460/575 7.5
MED 208/230/460/575 7.5
HIGH 208/230/460/575 7.5
28
STD 208/230/460/575 7.5
MED 208/230/460/575 7.5
HIGH 208/230/460/575 7.5
APPLICATION DATA (cont)
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