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Provide sediment trap up stream of gas valve.
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Propane Installation
Connections by licensed propane dealer only.
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Use two stage regulator provided by propane
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supplier.
Propane supplier should check piping.
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Leak Check Gas Piping
Pressure test boiler and gas connection before placing
boiler in operation.
Pressure test over 1/2 psig (3.5 kPa). Disconnect
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boiler and its individual gas shutoff valve from gas
supply system.
Pressure test at 1/2 psig (3.5 kPa) or less. Isolate
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boiler from gas supply system by closing manual
gas shutoff valve.
Locate leakage using gas detector, noncorrosive
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detection fl uid, or other leak detection method
acceptable to authority having jurisdiction. Do
not use matches, candles, open fl ames, or other
methods providing ignition source.
Correct leaks immediately and retest.
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GAS SUPPLY PIPING
Table - 4a Gas Pipe Sizes - Natural Gas
Length of
Pipe - Ft.
Pipe Capacity - BTU Per Hour Input
Includes Fittings
1/2" 3/4" 1" 1 -1/4"
20 92,000 190,000 350,000 625,000
40 63,000 130,000 245,000 445,000
60 50,000 105,000 195,000 365,000
Table - 4b Gas Pipe Sizes - Propane Gas
Length of
Pipe - Ft.
Pipe Capacity - BTU Per Hour Input
Includes Fittings
5/8" 3/4" 1/2" 3/4"
20 131,000 216,000 189,000 393,000
40 90,000 145,000 129,000 267,000
60 72,000 121,000 103,000 217,000
* Outside diameter
Length of pipe or tubing should be measured from the gas meter
or propane second stage regulator.
Figure 9 - Gas Piping At Boiler