37
OIL PIPE SIZING INFORMATION
Figure 27
– Fuel line sizing diagram for fuel tank below burner, burner setup in two-pipe
operation
Table 5: Max Allowable Fuel Line Lengths for two pipe operation
Inlet
Tubing
Size
Lift H
(ft.)
Model A Single Stage
Model B Two-Stage
3450 RPM
3450 RPM
3 gal/hr
7 gal/hr
3 gal/hr
7 gal/hr
3/8" O.D.
Copper
Tubing
0
84
71
93
80
2
73
62
85
73
4
63
53
77
66
6
52
44
69
59
8
42
35
60
52
10
31
27
52
45
12
21
18
44
38
14
-
-
36
31
16
-
-
27
24
18
-
-
-
-
1/2" O.D.
Copper
Tubing
0
100
100
100
100
2
100
100
100
100
4
100
100
100
100
6
100
100
100
100
8
100
100
100
100
10
100
100
100
100
12
83
70
100
100
14
41
35
100
100
16
-
-
100
100
18
-
-
76
65
NOTE: Max. total line length L=H + R, values were calculated based off a fuel viscosity of 57 SSU. Elbows, valves & filters
will further reduce total line length.
It is recommended to avoid 3/8” lines where feasible.
L= Max total line length (ft.), H+R
H= Vertical distance in feet from bottom of
tank to centerline of pump, or lift (ft.)
R= Horizontal distance in feet from
tank to centerline of burner pump (ft.)
Q=firing rate capacity of fuel pump (gal/hr)
