Gas Supply Pipe Sizing and Looping
TMB2126N_SVG
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Gas furnace [120,000 Btu/hr. [127 Mj/hr., 35 kW]]
2.
Gas water heaters [400,000 Btu/hr. [422 Mj/hr., 117 kW] each]
3.
Gas space heaters [70,000 Btu/hr. [79 Mj/hr., 21 kW] each]
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Sediment traps, supply pressure taps and shut-off valves. Refer to
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1 in. [25 mm] gas pipe loop
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19 ft. [5.8 m]
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Minimum Pipe Size is 1/2 NPT
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25 ft. [7.6 m]
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Main regulator
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Gas meter
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Pressure regulator (if required)
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050 series tumble dryers = 130,000 Btu/hr. [137 Mj/hr., 38 kW] each; 075 series tumble dryers = 165,000 Btu/hr. [174 Mj/hr.,
48 kW] each; F75 series tumble dryers = 225,000 Btu/hr. [237 Mj/hr., 66 kW] each
Figure 23
SAMPLE CALCULATIONS:
Equivalent length = Total length of main gas supply pipe to
the far end of the tumble dryers.
= 25 ft. + 19 ft. [7.6 m + 5.8 m] gas supply pipe
= 44 ft. [13.4 m] Total Gas Line
Total Btu/hr. = The sum of the Btu/hr. of all 050 series tumble
dryers being fed by the main gas supply pipe.
= 9 x 130,000 [137, 38]
= 1,170,000 Btu/hr. [1,234 Mj/hr., 343 kW]
Using
, the main supply pipe diameter should be 2 NPT.
IMPORTANT: Gas loop piping must be installed as il-
lustrated to equalize gas pressure for all tumble dryers
connected to single gas service. Other gas using appli-
ances should be connected upstream from loop.
Gas Requirements
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Part No: 70457901ENR15
Содержание 0904004427
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