Bosch 520PN Applications Manual page 68

26 | Installation instructions
4.8.1 FOR NATURAL GAS
Maximum Capacity of pipe in Cubic Feet of Gas per Hour for Gas Pressure of 0.5 Psig or less and a Pressure drop of 0.3" in Water Column
(0.75mbar).(Based on a 0.60 Specific Gravity Gas) Btu numbers given in thousands.
Follow boxed numbers for piping just one C 1210 ES/ESC (example: ¾" B.I. Natural Gas pipe for 10 ft (3.0m). will handle 278,000 btu's (81.5 kWh).
For multiple appliances combine the total maximum btu input load and then refer to applicable chart below.
Nominal
Length of Black iron Pipe, Feet
Internal
Iron Pipe
Diameter
Size,
inches 10
inches
1/4 0.364 32
3/8 0.493 72
1/2 0.622 132
3/4 0.824 278
1 1.049 520
1 1/4 1.380 1050
1 1/2 1.610 1600
2 2.067 3050
Table 23
Length of Flexible Corrugated Stainless Steel Tubing
Tube
(CSST), Feet
size,
inches EHD* 10 20
1/2 18 EHD 82 58
3/4 23 EHD 161 116
1 30 EHD 330 231
1 1/4 37 EHD 639 456
Table 24
4.8.2 FOR LP GAS
FOR LP GAS Maximum Capacity of Pipe in Thousands of BTU per Hour of
Undiluted Petroleum Gases (at 11 inches Water Column Inlet Pressure)
(Based on a Pressure Drop of 0.5 Inch Water Column).
Nominal
Length of Black iron Pipe, Feet
Iron
Pipe
10 20 30
inches
1/2 291 200 160
3/4 608 418 336
1 1145 787 632
Table 25
Length of Flexible Corrugated Stainless Steel Tubing
Tube
(CSST), Feet
size,
inches EHD* 10 20
1/2 18 EHD 129 91
3/4 23 EHD 254 183
1 30 EHD 521 365
Table 26
Nominal
Length of Black iron Pipe, Feet
Iron
Pipe
10 20 30
inches
3/8 39 26 21
1/2 92 62 50
5/8 199 131 107
3/4 329 216 181
Table 27
Maximum Capacity of Semi-Rigid (flexible, non corrugated) Tubing in Thousands of BTU per Hour of Undiluted Liquefied Petroleum Gases (at 11 inches
Water Column Inlet Pressure).(Based on a Pressure Drop of 0.5 Inch Water Column)* Source National Fuel Gas Code NFPA 54, ANSI Z223.1 - No
Additional Allowance is necessary for an ordinary number of fittings.
6 720 644 887 (2013/02)
20 30 40 50
22 18 15 14
49 40 34 30
92 73 63 56
190 152 130 115
350 285 245 215
730 590 500 440
1100 890 760 670
2100 1650 1450 1270
30 40 50 60
47 41 37 34
96 83 75 68
188 162 144 131
374 325 292 267
40 50 60
137 122 110
287 255 231
541 480 434
30 40 50 60
74 64 58 53
151 131 118 107
297 256 227 207
40 50 60 70
19 _ _ _
41 37 35 31
90 79 72 67
145 131 121 112
60 70 80 90
12 11 11 10
27 25 23 22
50 46 43 40
105 96 90 84
195 180 170 160
400 370 350 320
610 560 530 490
1150 1050 990 930
* EHD = Equivalent Hydraulic Diameter. The greater the value of EHD, the
greater the gas capacity of the tubing.
80 100 125 150
94 84 74 67
197 175 155 140
372 330 292 265
* EHD = Equivalent Hydraulic Diameter. The greater the value of EHD, the
greater the gas capacity of the tubing.
80 90 100
_ _ _
29 27 26
62 59 55
104 95 90
100 125 150 175
9 8 8 7
21 18 17 15
38 34 31 28
79 72 64 59
150 130 120 110
305 275 250 225
460 410 380 350
870 780 710 650
200
58
120
227
200
6
14
26
55
100
210
320
610
C 1210 ES/ESC