Specifications Model 7S25 (Direct Drive)

Stage No.

Blower Combinations

Blower
H.P. Used

Output in
BTU's per Hr. 

Equivalent
Boiler H.P. 

1

Small

3

360,000

10

2

Medium

5

720,000

22

3

Medium & Small

8

1,080,000

32

4

Large

10

1,440,000

42

5

Large & Small

13

1,800,000

52

6

Large & Medium

15

2,160,000

65

7

Large, Medium & Small

18

2,520,000

75

Fuel required at full output
 Natural Gas - 2,520 CFH (regulated at 10 PSI)
 Propane - 28 GPH (regulated at 10 PSI) 
Fuel connection - 1 1/2" (FNPT) 

Length - 100"
Width - 36"
Height 88"
Weight - 2800 lbs. (approx.) 

Water required at full output - 5.5 GPM @ 40 PSI
Water connection - 1" (FNPT)
Amperage at full output - 52.8 @ 230V - 26.4 @ 460V
Electric service required in amps - 100 @ 230V - 60 @ 460V 

Specifications Model 7S35 (Belt Drive)

Stage No.

Blower Combinations

Blower
H.P. Used

Output in
BTU's per Hr. 

Equivalent
Boiler H.P. 

1

Small

5

500,000

15

2

Medium

7.5

1,000,000

30

3

Medium & Small

12.5

1,500,000

45

4

Large

15

2,000,000

60

5

Large & Small

20

2,500,000

75

6

Large & Medium

22.5

3,000,000

90

7

Large, Medium & Small

27.5

3,500,000

105

Fuel required at full output
 Natural gas - 3,500 CFH (regulated at 10 PSI)
 Propane - 38 GPH (regulated at 10 PSI)
Fuel connection - 2" (FNPT) 

Length - 102"
Width 42 - 42"
Height - 98"
Weight - 3600 lbs. (approx.) 

Water required at full output - 7.5 GPM @ 40 PSI
Water connection - 1" (FNPT)
Amperage at full output - 79.2 @ 230V - 39.6 @ 460V
Electric service required in amps - 100 @ 230V - 60 @ 460V