Fuel Piping

Pipe Sizing - Natural Gas

1.Refer to Table 1 for pipe length and diame- ter requirements. Based on rated ELITE input (divide by 1,000 to obtain cubic feet per hour).

-Table 1 is based on Natural Gas with a specific gravity of 0.60 and a pressure drop through the gas piping of 0.30”w.c..

-For additional gas piping sizing infor- mation, refer to ANSI Z223.1. For Canadian installations refer to B149.1 or B149.2.

Natural Gas Supply Pressure Requirements

1.Pressure required at the gas valve inlet supply pressure port:

-Maximum 13”w.c. at flow or no flow conditions to the burner.

Pipe Sizing - Propane Gas

1.Contact the local propane gas supplier for recommended sizing of piping, tanks and 100% lockup gas regulator.

Propane Gas Supply Pressure Requirements

1.Adjust the propane supply regulator pro- vided by the gas supplier for 13”w.c. max- imum pressure

2.Pressure required at the gas valve inlet sup- ply pressure port:

-Maximum 13”w.c. at flow or no flow conditions to the burner

-Minimum 5”w.c. during flow condi- tions to the burner. Must be verified during start up.

- Minimum 5”w.c. during flow condi- tions to the burner. Must be verified during start up.

2.Install 100% lockup gas pressure regulator in the gas supply line if inlet pressure can exceed 13”w.c at any time. Adjust the lock- up pressure regulator for 13”w.c maximum.

Table 1: Gas piping sizing - Natural Gas

 

Length of Pipe

 

Capacity of Pipe in Cubic Feet of Gas Per Hour

 

 

in Feet

(based on 0.60 specific gravity, 0.30" w.c. pressure drop)

 

 

SCH 40

 

 

 

 

 

 

 

 

1/2"

 

3/4"

 

1"

1-1/4"

1-1/2"

 

 

10

132

 

278

 

520

1050

1600

 

 

20

92

 

190

 

350

730

1100

 

 

30

73

 

152

 

285

590

860

 

 

40

63

 

130

 

245

500

760

 

 

50

56

 

115

 

215

440

670

 

 

75

45

 

93

 

175

360

545

 

 

100

38

 

79

 

150

305

460

 

 

150

31

 

64

 

120

250

380

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

29

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Page 34
Image 34
Delta 40, F-25, 35, 30, 45 warranty Pipe Sizing Natural Gas, Natural Gas Supply Pressure Requirements, Pipe Sizing Propane Gas

45, 30, 35, 40, F-25 specifications

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