3 Stage Series - Page 2

Specifications Model 3S10 and 3S15

Model

3S10 (Direct Drive)

3S15 (Belt Drive)

Stage

1

2

3

1

2

3

Output in BTU's per Hr.

360,000

720,000

1,080,000

500,000

1,000,000

1,500,000

Blower H.P. Low Press.*
High Press.** 

1.5*
3** 

3*
5** 

4.5*
8** 

3*
5** 

5*
7.5** 

8*
12.5** 

Equivalent Boiler H.P.

10 H.P.

22 H.P.

32 H.P.

15 H.P.

30 H.P.

45 H.P.

Natural Gas Required
(Regulated at 10 P.S.I.) 

360
CFH 

720
CFH 

1,080
CFH 

500
CFH 

1,000
CFH 

1,500
CFH 

Propane Required
(Regulated at 10 P.S.I.) 

4
GPH 

8
GPH 

12
GPH 

5.5
GPH 

11
GPH 

16.5
GPH 

Fuel Connection

1" (FNPT)

1" (FNPT)

Water Required @ 40 P.S.I.

2.3 GPM

3.2 GPM

Water Connection

3/4" (FNPT)

3.4" (FNPT)

Amperage at Full Output
230/460 VAC 60 Hertz 

Low Pressure*
14.8/7.4 

High Pressure*
24.8/12.4 

Low Pressure*
24.8/12.4 

High Pressure**
37.2/18.6 

Electric Service 230/460
Required in Amps 

Low Pressure*
20/15 

High Pressure**
40/20 

Low Pressure*
40/20 

High Pressure**
60/30 

Length

70 inches

90 inches

Width

30 inches

36 inches

Height

80 inches

88 inches

Weight

1500 lbs.

2200 lbs.