Page 9
Before converting a onepipe system to a twopipe sys
tem the pump must be converted to a twopipe system.
To convert the pump, install the bypass plug according to
the instructions. Notice in the twopipe system the return
line must terminate 3" (76 mm) to 4" (102 mm) above the
supply inlet. Failure to do this may introduce air into the
system and could result in loss of prime.
NOTE-If using an outside tank in cold climates a number one
fuel or an oil treatment is strongly recommended.
FIGURE 6
OIL PIPING
ÎÎÎÎÎÎÎÎÎÎÎÎ
ÎÎÎÎÎÎÎÎÎÎÎÎ
ÎÎÎÎÎÎÎÎÎÎÎÎ
ÎÎÎÎÎÎÎÎÎÎÎÎ
ÎÎÎÎÎÎÎÎÎÎÎÎ
ÎÎÎÎÎÎÎÎÎÎÎÎ
ÎÎÎÎÎÎÎÎÎÎÎÎ
ÎÎÎÎÎÎÎÎÎÎÎÎ
ÎÎÎÎÎÎÎÎÎÎÎÎ
ÎÎÎÎÎÎÎÎÎÎÎÎ
Air Vent
Fill
Pipe
Oil
Tank
Fuel
Unit
Aux
Filter
Shut-off
Valve
8 ft (2.4 m)
Maximum
One Pipe Lift
ONEPIPE SYSTEM
FIGURE 7
OIL PIPING
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ
ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ
Fuel
Unit
Aux
Filter
Return
Line
Fill
Pipe
Air Vent
Oil
Tank
Inlet
Return
Line
H
3"-4"
(76mm -102mm)
R
OUTSIDE TANK FUEL UNIT ABOVE BOTTOM OF TANK.
TWOPIPE SYSTEM
TABLE 4
TWO-PIPE MAXIMUM LINE LENGTH (H + R)
3450 RPM - 3 GPH (11.4 LPH)
Lift H"
Figure 6
3/8" (10 mm) OD
Tubing
1/2" (12 mm) OD
Tubing
g
Single
Stage
Two
Stage
Single
Stage
Two
Stage
0'
(0.0 m)
84'
(25.6 m)
93'
(28.3 m)
100'
(30.5 m)
100'
(30.5 m)
2'
(0.6 m)
73'
(22.3 m)
85'
(25.9 m)
100'
(30.5 m)
100'
(30.5 m)
4'
(1.2m)
63'
(19.2 m)
77'
(23.5 m)
100'
(30.5 m)
100'
(30.5 m)
6'
(1.8m)
52'
(15.8 m)
69'
(21.0 m)
100'
(30.5 m)
100'
(30.5 m)
8'
(2.4m)
42'
(12.8 m)
60'
(18.3 m)
100'
(30.5 m)
100'
(30.5 m)
10'
(3.0m)
31'
(9.4 m)
52'
(15.9 m)
100'
(30.5 m)
100'
(30.5 m)
12'
(3.7m)
21'
(6.4 m)
44'
(13.4 m)
83'
(25.3 m)
100'
(30.5 m)
14'
(4.3m)
---
36'
(11.0 m)
41'
(12.5 m)
100'
(30.5 m)
16'
(4.9m)
---
27'
(8.2 m)
---
100'
(30.5 m)
18'
(5.5m)
---
---
---
76'
(23.2 m)
B-Venting Considerations
WARNING
Combustion air openings in front of the furnace
must be kept free of obstructions. Any obstruction
will cause improper burner operation and may re
sult in a fire hazard or injury.
WARNING
The barometric shall be in the same atmospheric
pressure zone as the combustion air inlet to the
furnace. Deviation from this practice will cause im
proper burner operation and may result in a fire
hazard or injury.
CAUTION
Do not store combustible materials near the fur
nace or supply air ducts. The material (such as
paint, motor oil, gasoline, paint thinner, etc.) may
ignite by spontaneous combustion creating a fire
hazard.
