Bryant 524J manual A - Standard Drive Data, 60 Hz - English

Table 9A - Standard Drive Data, 60 Hz — English

UNIT	524J*25A	524J*28A	524J*30A
	524J*25H
MOTOR DRIVE
Motor Pulley Pitch Diameter (in.)	3.7--- 4.7	4.3--- 5.3	4.3--- 5.3
Pulley Factory Setting	3.0	3.0	3.0
Full Turns Open
FAN DRIVE
Pulley Pitch Dia (in.)	9.4	11.0	11.0
Pulley Bore (in.)	17/16	115/16	115/16
Belt No. — Section	2—B	2—B†	2—B†
Belt Pitch (in.)	41.8	(2) 42.8	(2) 42.8
		(2) 43.8	(2) 43.8
FAN SPEEDS (rpm)
Factory Setting	771	752	752
Range	679--- 863	682--- 841	674--- 831
Max Allowable Speed (rpm)	1200	1100	1100
Change per 1/ Turn of
2	15.3	13.1	13.1
Moveable Motor Pulley
Flange
MAX FULL TURNS FROM	6	6	6
CLOSED POSITION
SHAFTS CENTER DISTANCE (in.)	9.12--- 10.99	6.67--- 9.43	6.67--- 9.43

†Four belts shipped with unit. Use correct set of 2 belts sized according to the pulley setting.

Table 9B - Medium-Static Drive Data, 60 Hz — English

UNIT	524J*25A	524J*28A	524J*30A
	524J*25H
MOTOR DRIVE
Motor Pulley Pitch Diameter (in.)	4.3--- 5.3	4.3--- 5.3	4.3--- 5.3
Pulley Factory Setting	3.0	3.0	3.0
Full Turns Open
FAN DRIVE
Pulley Pitch Dia (in.)	9.4	9.4	9.4
Pulley Bore (in.)	17/16	115/16	115/16
Belt No. — Section	1—B	2—B†	2—B†
Belt Pitch (in.)	41.8	(2) 38.8	(2) 38.8
		(2) 39.8	(2) 39.8
FAN SPEEDS (rpm)
Factory Setting	881	881	881
Range	798--- 984	798--- 984	798--- 984
Max Allowable Speed (rpm)	1200	1100	1100
Change per 1/ Turn of
2	15.3	15.3	15.3
Moveable Motor Pulley
Flange
MAX FULL TURNS FROM	6	6	6
CLOSED POSITION
SHAFTS CENTER DISTANCE (in.)	9.16--- 10.99	6.67--- 9.43	6.67--- 9.43

†Four belts shipped with unit. Use correct set of 2 belts sized according to the pulley setting.

524J

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