4
Direct Drive
Construction and Material Data
All direct drive models are available in either exhaust or supply arrangements. Model SCR3 is the reversible fan model.
Level 1
Level 2
Level 3 Reversible
Model Sizes
8 - 12: D, G & E motor speeds
(see page 24 for motor speed chart)
12 - 24: A, B & C motor speeds
(see page 24 for motor speed chart)
16 - 54
20 - 54
24 - 54
Panel/Drive
Frame
Galvanized steel with one-piece drawn venturi
Galvanized steel with one-piece drawn venturi,
bolted structural steel channels and motor plate
(paint optional)
Zinc plated, heavy welded wire
guard/support structure
(paint optional)
Bolted structural steel channels
and motor plate (paint optional)
Propeller
Aluminum blades riveted to a steel hub
Heavy duty, welded and
gusseted painted steel
Heavy duty, cast
aluminum
Motors
Heavy duty, permanently
lubricated, sleeve bearing type
Ball bearing type
Heavy duty, permanently lubricated,
ball bearing type
Material Gauges
Max. Motor
Frame Size
Approx.
Weight (lbs.)
Models
Fan
Size
Fan
Panel
Drive
Frame
Prop Hub Prop Blade
Level 1, Models: S1
Model S1
Sizes 8 to 12
Model S1
Sizes 12 to 24
8
18
-**
-
-
48
15
10
18
-**
-
-
48
16
12
18
14**
/
*
-
-
48
20
14
18
14*
-
-
56
27
16
18
14*
-
-
56
30
18
18
14*
-
-
56
35
20
18
14*
-
-
145T
39
24
18
14*
-
-
145T
45
Level 2, Models: S2
Model S2
16
18
14
14
16
56
40
18
18
14
14
16
56
45
20
16
12
14
16
145T
60
24
18
12
14
16
145T
85
30
16
12
12
16
184T
130
36
16
12
12
16
215T
230
42
14
10
10
14
254T
290
48
14
10
10
14
254T
375
54
14
10
10
14
256T
465
Level 3, Models: SC3
Model SC3
20
16
12
Cast
Aluminum
Prop
Cast
Aluminum
Prop
145T
55
24
18
12
184T
80
30
16
12
184T
125
36
16
12
215T
220
42
14
10
254T
290
48
14
10
254T
386
54
14
10
256T
477
Reversible, Model SCR3
Model SCR3
24
16
12
Cast
Aluminum
Prop
Cast
Aluminum
Prop
184T
80
30
16
12
184T
125
36
16
12
215T
220
42
14
10
254T
290
48
14
10
254T
386
54
14
10
256T
477
* A, B and C motor speeds only. Approximate weight does not include accessories.
** D, G and E motor speeds have a wire frame rather than a drive frame.