Specification Sheet

304
ACCESSORIES & OPTIONS
FOR MOUNTING ARRANGEMENTS Cont.
Fan
Size
Opening
Required
A
O.D.
B
(1)
C
"Size"
D
(Center
of Holes)
# of
Panels
G
Closed
(E-1)
Open
(E-2)
24 27 29 24-1/2 26 - 1 x 1 7-1/4 8-1/2
30 33 35 30-1/2 32 - 1 x 1 10-1/4 13-3/4
36 39 41 36-1/2 38 19-1/2 1 x 1 10-1/4 13-3/4
42 45 47 42-1/2 44 22-1/2 1 x 1 10-1/4 13-3/4
48 51 53 48-1/2 50 25-1/2 2 x 1 10-1/4 13-3/4
54 57 59 54-1/2 56 28-1/2 2 x 1 10-1/4 12-3/4
60 63 65 60-1/2 62 31-1/2 2 x 1 10-1/4 12-3/4
72 77 79 76-1/2 76 39-1/2 2 x 1 10-1/4 12-3/4
(1) Minimum opening to clear pins.
(2) Motor is 60 Hz, single phase continuous duty with 104
o
F (40
o
C), maximum ambient temperature
A
A
B
C
C
D
1/2"
3"
BUSHING
AT ALL
PIVOT POINTS
9/32" x 1/2"
Slotted Mounting Holes
REAR VIEW
(CLOSED)
BLADE
CLIP
TIE ROD
LINK
MOTOR
2"
1 1/2"
BRACE BAR
Size 30 &
Larger
E
1
E
2
SIDE
VIEW
B
A
EXHAUST
AIR
FLOW
3"
10" MAX
A
B
A
B
7" MAX
SUPPLY
AIR
FLOW
DETAIL #4
A
B
MOTOR MOUNT
MA-220
MOTOR MOUNT
MP-2781
10" MAX
14"
MAX
14"
MAX
A
B
DETAIL #3
B
A
DETAIL #2
DETAIL #1
B
A
Heavy Duty Dampers required on all units with 7 1/2HP motors and above.
Fan
Size
A
Sq. Size
B
Sq. OD
Flange
Panels
(Detail)
Motor Type
Exhaust Supply
Type Qty Type Qty
20 20 22 1/2 1 MP-2781 1 MP-2781-S 1
24 26 28 1/2 1 MP-2781 1 MP-2781-S 1
30 32 34 1/2 1 MP-2781 1 MA-220-S 1
36 38 40 1/2 1 MA-220 1 MA-220-S 1
42 44 46 1/2 2 MA-220 1 MA-220-S 2
48 50 52 1/2 2 MA-220 1 MA-220-S 2
54 56 58 1/2 3 MA-220 2 MA-220-S 2
60 62 64 1/2 3 MA-220 2 MA-220-S 2
72 77 79 1/2 4 MA-220 4 MA-220-S 4
Dimensions (Standard and Heavy-Duty Dampers)
Dimensions (Center Pivot Motorized Damper)
Fan
Size
Motor (2)
Power
Supply
Max
Amps
Stall Torque
(in. lbs)
24-48
120-240V
60Hz
0.3/0.6 25
54-60
240V
60Hz
0.5 60
MODELS LCE/LCS, L2E/L2S, L3E/L3S
BELT DRIVE SIDEWALL PROPELLER FANS