Bosch AQ 125BO LP Use And Care Manual page 11

Installation instructions
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.
Copper tubing is prohibited for use with Natural Gas in the Commonwealth of Massachusetts and not recommended
elsewhere.
Follow boxed numbers for piping just one AQ125 BO (example: 3/4" B.I. Natural Gas pipe for 20 ft (6.1m). will I
handle 190,000 btu's (55.7 kWh). For multiple appliances combine the total btu input load and then refer to
applicable chart below.
Nominal
Iron Length of Black Iron Pipe, Feet
Pipe Internal
Size Diameter
inches inches t 0 20 30 40 50 60 70 80 90 t 00 125 t 50 175 200
1/4 0,364 32 22 18 t5 14 12 tt 11 10 9 8 8 7 6
3/8 0.493 72 49 40 34 30 27 25 23 22 2t t8 17 t5 t4
0.622 1t32 I 92 73 63 I 56 50 46 43 40 38 34 31 28 26
1
0.824278 I t90 t52 130 tt5 t05 96 90 84 79 72 64 59 55
1.049 520 350 285 245 2t5 t95 180 t70 160 t50 130 t201110100110 100
1.380 1050 730 590 500 440 400 370 350 320 305 275 25012252101
t t/2 1.6t0 1600 t100 890 760 670 6t0 560 530 490 460 410 380 350 320
2 2.067 3050 2t00 1650 1450 1270 t150 t050 990 930 870 780 7t0 650 610
Length of Flexible Corrugated Stainless Steel Tubing (CSST), Feet
Tube
size,
inches EHD*
10 20 30 40 50 60
1/2 18 EHD 82 58 47 41 37 34
23 H[_116 96 83 75 68
30 EHD 3301231 188 162 144 131
11/4 37 EHD 639456 374 325 292 267
* EHD = Equivalent Hydraulic Diameter. The greater the
value of EH D, the greater the gas capacity of the tubing.
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).
* EHD = Equivalent Hydraulic Diameter. The greater the
value of EH D, the greater the gas capacity of the tubing.
Nominal
Iron pipe Black Iron Pipe
size Length of pipe, Feet
inches 10 20 30 40 50 60 70 80 90 100 125 150
t,2,2. ,sg t52 ,2g tt4 to3 g65g5375 6g 53
113/4 Ir 567 693 315 2671 237 217 196 185 173 162 146 132 I
1 107 732 590 504 448 409 378 346 322 307 275 252
1 1/4 220 149 121 103 913 834 771 724 677 630 567 511
1 1/2 330 229 185 155 141 127 118 108 102 975 866 787
2 522 433 346 299 264 239 220 204 192 1811 1606 1496
Length of FlexbleCorrugatedSta nlessSteel Tubng (CSST), Feet
Tube
size
inches EHD*
10 20 30 40 50 60
_18 EH_ 91 74 64 58 5_
23 EHD
2541183
151 131 118 107
30 EHD 521 365 297 256 227
1 1/4 37 EHD 971 661 528 449 397 359
Maximum Capacity of Semi-Rigid copper 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
3utside
diameter
nch
Copper(LPgas only)
Length ofTubing, Feet
10 20 30 40 50 60 70 80 90 100
3/8 39 26 21 19
1/2 92 62 50 41 37 35 31 29 27 26
5/8 _107 90 79 72 67 62 59 55
3/4 329 2161181 145 131 1211 112 104 95 90
I I
Fig. 8
8 71 6 473 147
1 1