Bryant Air Handling Units 524J - Manual (Page 27)

27
Table 9C — High-Static Drive Data, 60 Hz — English
Table 9D — Standard Drive Data, 60 Hz — SI
UNIT
524J*07A
524J*07H
524J*08A
524J*08H
524J*12A
524J*12H
524J*14A 524J*16A
MOTOR DRIVE
Motor Pulley Pitch Diameter (in.) 3.4-4.4 3.4-4.4 3.4-4.4 3.7-4.7 4.3-5.3
Pulley Factory Setting
Full Turns Open
2.5 2.5 2.5 3.0 3.0
FAN DRIVE
Pulley Pitch Dia (in.) 7.0 6.0 † 6.0 7.4 7.9
Pulley Bore (in.) 1 1 1 1 7 /
16
1 7 /
16
Belt No. — Section 1—A 1—A 1—A 1—B 1—B
Belt Pitch (in.) 41.3 37.3 37.3 39.8 39.8
FAN SPEEDS (rpm)
Factory Setting 961 1121 1121 979 1060
Range
838-
1084
978-
1200 †‡
978-
1200 ‡
873-
1096
950-
1171
Max Allowable Speed (rpm) 1200 1200 1200 1200 1200
Change per 1 /
2
Turn of
Moveable Motor Pulley
Flange
24.6 28.7 28.7 19.4 18.4
MAX FULL TURNS FROM
CLOSED POSITION
5 5 5 6 6
SHAFTS CENTER DISTANCE (in.)
10.44-
12.32
10.44-
12.32
10.44-
12.32
10.44-
12.32**
9.16-
10.99
† Values for 3-phase motor shown. For single-phase motor, pulley pitch diameter is 7 in. and
resulting fan speed is 837-1096 rpm.
‡ It is possible to adjust drive so that fan speed exceeds maximum allowable. DO NOT exceed 1200 rpm.
** 575-v unit has a center distance of 9.16-10.99.
UNIT
524J*07A
524J*07H
524J*08A
524J*08H
524J*12A
524J*12H
524J*14A 524J*16A
MOTOR DRIVE
Motor Pulley Pitch Diameter (mm)
61.0-
86.4
71.1-
96.5
86.4-
111.8
71.1-
96.5
71.1-
96.5
Pulley Factory Setting
Full Turns Open
2.5 2.5 2.5 2.5 2.5
FAN DRIVE
Pulley Pitch Dia (mm) 224 224 224 229 229
Pulley Bore (mm) 25.4 25.4 25.4 36.5 36.5
Belt No. — Section 1—A 1—A 1—A 1—A 1—A
Belt Pitch (mm) 1024 1049 1074 1074 1074
FAN SPEEDS (r/s)
Factory Setting 9.5 10.8 12.7 10.5 10.5
Range 7.8-11.1 9.2-12.4 11.1-14.4 9.0-12.1 9.0-12.1
Max Allowable Speed (r/s) 20.0 20.0 20.0 20.0 20.0
Change per 1 /
2
Turn of
Moveable Motor Pulley
Flange
0.327 0.327 0.328 0.318 0.318
MAX FULL TURNS FROM
CLOSED POSITION
5 5 5 5 5
SHAFTS CENTER DISTANCE (mm) 265-313 265-313 265-313 265-313 265-313