Natural Gas Pipe Sizing; Lp Vapor Pipe Sizing - Generac Power Systems 6103 EcoGen Installation Manuallines

When measuring pipe length, add 2.5 feet (0.76m) for each angle or bend in the pipe run and add that to the
4.
overall pipe distance.
5.4.1— Natural Gas Pipe Sizing
The following table indicates the maximum length (measured in feet / meters) allowed for various pipe sizes. The pipe
sizes are measured by inside diameter (ID) to include any fittings, valves (must be full flow), elbows, tees or angles.
Add 2.5 feet (0.76 m) to the overall distance for each bend, tee or angle in the pipe run.
NOTE: Tables based on Schedule 40 black pipe.
5.4.2— LP Vapor Pipe Sizing
The table indicates the maximum length (measured in feet / meters) allowed for various pipe sizes. The pipe sizes are
measured by inside diameter (ID) to include any fittings, valves (must be full flow), elbows, tees or angles. Add 2.5 feet
(0.76 m) to the overall distance for each bend, tee or angle in the pipe run.
NOTE: Pipe sizes are using a second stage regulator.
Installation Guidelines for Air-Cooled Generators
Allowable Pipe Distances (feet / meters)
Pipe Size
(in. / mm)
15 kW EcoGen
For 5-7 inches of water column (9-13 mm of mercury).
Allowable Pipe Distances (feet / meters)
Pipe Size
(in. / mm)
15 kW EcoGen
For pressures 3.5 - 5 inches of water column (7 - 9 mm of mercury).
Allowable Pipe Distances (feet / meters)
Pipe Size
(in. / mm)
15 kW EcoGen
1 / 25 1.25 / 32
20 / 6 100 / 30
1 / 25 1.25 / 32
10 / 3 60 / 18
0.75 / 19 1 / 25
250 / 76 70 / 21
Fuel Conversion/Gas Connections
1.5 / 38
200 / 60
1.5 / 38
125 / 38
1.25 / 32
350 / 106
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