21
C
. Two-Pipe Oil Lines.
1. For two-pipe systems where more lift is required,
the two-stage fuel unit is recommended. Table 2
(single-stage) and Table 3 (two-stage) show
allowable lift and lengths of 3/8-inch and ½-inch
OD tubing for both suction and return lines. Refer
to Figure 17.
TABLE 3: TWO-STA GE UNITS (3450 R PM)
TWO-PIPE SYTEMS
Lift "H"
(See Fig. )
Maximum Length of Tubing
"H" + "R" (See Figure)
3/8" OD
Tubing (3 GPH)
1/2" OD
Tubing (3 GPH)
0'
93'
100'
2'
85'
100'
4'
77'
100'
6'
69'
100'
8'
60'
100'
10'
52'
100'
12'
44'
100'
14'
36'
100'
16'
27'
100'
18'
---
76'
Figure 17: Two-Pipe Installation
Summary of Contents for LEDV SERIES
Page 14: ...14 Figure 10 Vent Installation Figure 11 Vent Connector Un Assembled ...
Page 15: ...15 Figure 13 Air Intake Installation Figure 12 Vent Connector Assembled ...
Page 19: ...19 Figure 15 Schematic Wiring Diagram ...
Page 28: ...28 Service Notes ...
Page 30: ...30 Figure 19 LEDV Boiler Trim Controls ...
Page 31: ...31 Figure 20 LEDV Boiler Jacket Insulation ...
Page 32: ...32 Figure 21 LEDV Bare Boiler Assembly ...
Page 33: ...33 Figure 22 Vent Kit Repair Parts ...
Page 36: ...36 ...