97-610, 97-6152 • REV. 7/04
OPERA
T
OR’S MANU
AL
PRESSURE W
ASHER
10
INSTALLATION
The following pipe and stack sizes are just recommen-
dations. Always consult a local plumber and venting
contractor for local codes and regulations during in-
stallation.
The following tables are maximum capacity of final
stage pipe in thousands of Btu/hr of commercial pro-
pane
From first stage regulator (at tank) to second stage
regulator
The chart below is based on incoming gas pressure of
10 PSI and a pressure drop of 1 PSI. Numbers are for
straight schedule 40 pipe; fittings further reduce ca-
pacity.
From second stage regulator to machine.
The following chart is based on incoming gas pressure
of 11 w.c.i. and a pressure drop of .5 w.c.i. Numbers
are for straight schedule 40 pipe; fittings further reduce
capacity.
The chart below is based on gas pressure in the range
0-.5 PSI, specific gravity of .6, and pressure loss of
.5 w.c.i. Numbers are for straight schedule 40 pipe; fit-
tings further reduce capacity.
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1
9
3
3
3
2
8
9
6
0
2
5
9
2
2
9
9
7
4
0
3
3
4
8
1
4
5
8
3
0
4
7
7
5
1
8
9
2
3
0
5
8
9
3
1
3
2
9
2
0
6
7
6
2
1
9
4
6
2
0
7
5
6
1
1
7
3
4
2
0
8
4
8
0
1
7
6
2
2
0
9
7
1
0
1
7
2
1
2
0
0
1
1
6
9
9
0
0
2
0
5
1
2
7
7
3
1
6
1
0
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2
0
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6
1
8
3
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2
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0
2
0
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2
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1
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8
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3
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4
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2
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1
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4
0
8
4
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8
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1
2
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3
0
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7
8
5
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1
9
4
3
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1
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1
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2
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