Cumberland Super-Saver XL HH-SS-120-XL, Owner'S Manual

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8. Pipe Sizing Guidelines
24 4801-1020 Super-Saver XL
TM
Heater
IMPORTANT : Tables 2 and 3 given below are based on values given in the Gas Engineers Handbook and
are intended as a guide only. Consult your gas supplier for gas capacity and pipe size
information for your particular piping system.
Table 2
NOTE : Table values given in BTUH/1000. To convert to kW, multiply table values by 0.3.
* 1 Inch = 25.4 mm
Table 3
NOTE : Table values given in BTUH/1000. To convert to kW, multiply table values by 0.3.
* 1 Inch = 25.4 mm
Nominal
Iron Pipe
Size
(*inch)
Internal
Diameter,
(IPS)
(*inch)
Maximum Capacity of Pipe in Thousands of BTU Per Hour
Natural Gas (Methane) @ Pressure Drop of 0.5 in W.C. (0.2 mbar)
Values listed are for 0.6 sp.gr. based on Heat of Combustion of 1000 BTU/cu.ft
Length of Pipe, Feet (multiply ft by 0.3 to convert to meter)
10 20 30 40 50 60 70 80 90 100 150 200 250 300
1/2 0.622 175 120 97 82 73 66 61 57 53 50 40 35 29 25
3/4 0.824 360 250 200 170 151 138 125 118 110 103 84 72 59 53
1 1.049 680 465 375 320 285 260 240 220 205 195 160 135 109 100
1-1/4 1.380 1400 950 770 660 580 530 490 460 430 400 325 280 219 206
1-1/2 1.610 2100 1460 1180 990 900 810 750 690 650 620 500 430 325 309
2 2.067 3950 2750 2200 1900 1680 1520 1400 1300 1220 1150 950 800 614 596
2-1/2 2.469 6300 4350 3520 3000 2650 2400 2250 2050 1950 1850 1500 1280 966 950
3 3.068 1100 7700 6250 5300 4750 4300 3900 3700 3450 3250 2650 2280 1855 1680
4 4.026 2300 1580 1280 1090 9700 8800 8100 7500 7200 6700 5500 4600 3783 3432
Nominal
Iron
Pipe
Size
(*inch)
Internal
Diameter,
(IPS)
(*inch)
Maximum Capacity of Pipe in Thousands of BTU per Hour
Liquid Propane (LP) @ Pressure Drop of 0.5 in W.C.
Values listed are for 1.6 sp.gr. based on Heat of Combustion of 2500 BTU/cu.ft
Length of Pipe, Feet (multiply ft by 0.3 to convert to meter)
10 20 30 40 50 60 80 100 125 150 200 250 300 350 400
1/2 0.622 291 200 161 137 122 110 94 84 74 67 58 51 46 43 40
3/4 0.824 608 418 336 287 255 231 198 175 155 141 120 107 97 89 83
1 1.049 1146 788 632 541 480 435 372 330 292 265 227 201 182 167 156
1-1/4 1.380 2353 1617 1299 1111 985 892 764 677 600 544 465 412 374 344 320
1-1/2 1.610 3525 2423 1946 1665 1476 1337 1144 1014 899 815 697 618 560 515 479
2 2.067 6789 4666 3747 3207 2842 2575 2204 1954 1731 1569 1343 1190 1078 992 923