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Oil Piping - One-Pipe System
-- AIR VENT
-- FILL PIPE
_o_1 II TANKI v_l 8ft(2.4m)
ol II 111S"UT'OFFI "Maximam
IL VALVE I One Pipe Lift
_o Oo °°8° _o °o °o_o °o o_
Figure 15
Todetermine the correct tubing size for piping, refer to table 3
Table 3
One-Pipe Oil Sizing
Line Length Pipe Diameter (OD Tubing)
0-50' (15 m) 3/8" (10 mm)
51-100' (15 m) 1/2" (12 mm)
Two-Pipe System
When using a two-pipe system (see figure 16) with the oil
tank below the level of the burner, use a single-stage fuel
pump in lift conditions of up to 10 feet (3 m) and/or a vacu-
um of 10" (254 mm) Hg or less. Use a two-stage fuel pump
when lift exceeds 10 feet (3 m) and/or a vacuum of 10" (254
mm) Hg to 15" (381 mm) Hg. Both conditions require that
you use of a two-pipe system, which consists of a return
line that purges the fuel pump of air by returning it to the
tank. Todetermine the run and lift for piping, refer to table4
Use continuous lengths of heavy wall copper tubing or
steel pipe for oil supply pipe. Install oil supply pipe under
floor or near walls to protect itfrom damage, Avoid running
pipes along joists or reverberating surfaces. Always use
flare fittings. All fittings must be accessible, Do not use
compression fittings.
Oil Piping -Two-Pipe System
AIR VENT
FUEL PUMP
FILL PIPE "'',_ R / AUX
-IIII RETURN m/ .FILTER
_II I PIPE _ _ INLET
- -. --
(76ram'102mm) I
.... F_iF_E 14 R
outside tank fuel pump above bottom of tank.
Figure 16
IMPORTANT
Table 4
Two-Pipe Maximum Pipe Length (H + R)
3450 RPM - 3 GPH(11.4 LPH)
Single- Two- Single- Two-
Stage Stage Stage Stage
Lift "H" 3/8" (10mm) OD 1/2" (12 mm) OD
ft (m) Tubing- ft (m) Tubing
0' (0.0) 84 (25.6) 93 (28.3) 100 (30.5) 100 (30.5)
2' (0.6) 73 (22.3) 85 (25.9) 100 (30.5) 100 (30.5)
4' (1.2) 63 (19.2) 77 (23.5) 100 (30.5) 100 (30.5)
6 ' (1.8) 52 (15.8) 69 (21.0) 100 (30.5) 100 (30.5)
8' (2.4) 42 (12.8) 60 (18.3) 100 (30.5) 100 (30.5)
10' (3.0) 31 (9.4) 52 (15.9) 100 (30.5) 100 (30.5)
12' (3.7) 21 (6.4) 44 (13.4) 83 (25.3) 100 (30.5)
14' (4.3) --- 36 (11.0) 41 (12.5) 100 (30.5)
16' (4.9) --- 27 (8.2) --- 100 (30.5)
18' (5.5) ......... 76 (23.2)
Page 11
O23V SERIES