Gas Supply Pipe Sizing and Looping
TMB2126N_SVG
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1.
Gas furnace [120,000 Btu/hr. [127 Mj/hr., 35.2 kW]]
2.
Gas water heaters [400,000 Btu/hr. [422 Mj/hr., 117.2 kW] each]
3.
Gas space heaters [70,000 Btu/hr. [79 Mj/hr., 20.5 kW] each]
4.
Sediment traps, supply pressure taps and shut-off valves. Refer to
Figure 22
.
5.
1 in. [25.4 mm] gas pipe loop
6.
19 ft. [5.8 m]
7.
Minimum Pipe Size is 0.5 in. [12.7 mm]
8.
25 ft. [7.6 m]
9.
Main regulator
10.
Gas meter
11.
Pressure regulator (if required)
12.
050 series tumble dryers = 130,000 Btu/hr. [137 Mj/hr., 38.1 kW] each; 075 series tumble dryers = 165,000 Btu/hr. [174 Mj/hr.,
48.359 kW] each; F75 series tumble dryers = 225,000 Btu/hr. [237 Mj/hr., 65.94 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]
= 1,170,000 Btu/hr. [1,234 Mj/hr., 342.9 kW]
Using
Table 5
and
Table 6
, the main supply pipe diameter
should be 2 in. [51 mm].
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.
Low Pressure Gas Pipe Sizes
NOTE: Sizing calculations based on National Fuel Gas
Code.
Gas Requirements
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Copyright, Alliance Laundry Systems LLC -
DO NOT COPY or TRANSMIT
44
Part No. 70457901ENR12
Summary of Contents for YU050E
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