Bryant Air Handling Units 524J - Manual (Page 28)

28
Table 9E — Medium-Static Drive Data, 60 Hz — SI
Table 9F — High-Static 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 (mm)
86.4-
111.8
86.4-
111.8
86.4-
111.8
86.4-
111.8
94.0-
119.4
Pulley Factory Setting
Full Turns Open
2.5 2.5 2.5 2.5 3.0
FAN DRIVE
Pulley Pitch Dia (mm) 224 203 203 208 218
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—B
Belt Pitch (mm) 1074 1024 1024 1049 1062
FAN SPEEDS (r/s)
Factory Setting 12.7 14.0 14.0 13.7 14.0
Range 11.1-14.4 12.2-15.8 12.2-15.8 11.9-15.4 12.4-15.7
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
0.328 0.360 0.360 0.352 0.278
MAX FULL TURNS FROM
CLOSED POSITION
5 5 5 5 6
SHAFTS CENTER DISTANCE (mm) 265-313 265-313 265-313 265-313 265-313
UNIT
524J*07A
524J*07H
524J*08A
524J*08H
524J*12A
524J*12H
524J*14A 524J*16A
MOTOR DRIVE
Motor Pulley Pitch Diameter (mm)
86.4-
111.8
86.4-
111.8
86.4-
111.8
94.0-
119.4
109.2-
134.6
Pulley Factory Setting
Full Turns Open
2.5 2.5 2.5 3.0 3.0
FAN DRIVE
Pulley Pitch Dia (mm) 178 152 † 152 188 201
Pulley Bore (mm) 25.4 25.4 25.4 36.5 36.5
Belt No. — Section 1—A 1—A 1—A 1—B 1—B
Belt Pitch (mm) 1049 947 947 1011 1011
FAN SPEEDS (r/s)
Factory Setting 16.0 18.7 18.7 16.3 17.7
Range
14.0-
18.1
16.3-
20.0 †‡
16.3-
20.0 ‡
14.4-
18.3
15.8-
19.5
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
0.410 0.478 0.478 0.323 0.307
MAX FULL TURNS FROM
CLOSED POSITION
5 5 5 6 6
SHAFTS CENTER DISTANCE (mm) 265-313 265-313 265-313 265-313** 232-279
† Values for 3-phase motor shown. For single-phase motor, pulley pitch diameter is 178 mm
and resulting fan speed is 14.0-18.3 r/s.
‡ It is possible to adjust drive so that fan speed exceeds maximum allowable. DO NOT exceed 20 r/s.
** 575-v unit has a center distance of 233-279.