Oil-Fired BCS
Page 7
CONNECT THE OIL LINE
Gravity System:
The oil burner is normally equipped with a single-stage pump equipped
for one line (gravity) flow. Use
3
⁄
8
" O.D. or larger soft copper tubing and attach with flared
fittings. DO NOT USE COMPRESSION FITTINGS. Install the shut off valve and oil filter in the
oil line. Follow instructions from the pump manufacturer (attached to pump).
Lift System:
Run a two-line system (suction and return lines) for lifts over 8 feet. Install a
bypass plug if required according to the instructions attached to the pump. (Plug is in bag
with instruction sheet.) The burner may be ordered with a two-stage pump for high lifts or
longer runs.
WARNING!!! When you install the bypass plug you MUST run a two-line system!
For any horizontal run or lift that exceeds the maximum length specified in the chart below,
a booster pump must be used. Booster pumps may be obtained from Sun Tec Hydraulics, Rock-
ford, Illinois. Booster pumps must be installed as close to the oil supply tank as possible. Suc-
tion and return lines should be the same diameter and both go within 6" of the bottom of the
tank. The return line should stop slightly above the suction line. Use a minimum of fittings.
Make tubing bends with as large a radius as possible. DO NOT USE COMPRESSION FITTINGS.
Use caution in the final connection to the burner. Do not put strain on the fuel unit. Before
attaching tubing to the burner, form a coil in the tubing to minimize any vibration. Bury oil
lines in the floor for quiet operation, making sure there are NO CONNECTIONS OR FITTINGS
UNDER THE FLOOR.
MAXIMUM LIFT AND HORIZONTAL RUN
(Refer to pump manufacturer’s instructions)
Maximum Lift & Horizontal Run for Oil Units
Two-pipe System with
Two-pipe System with
One-pipe System
Single-Stage pump*
Two-Stage pump**
Lift
Horizontal Run
Lift
3450 RPM
Lift
3450 RPM
3
⁄
8
" O.D. Tube
1
⁄
2
" O.D. Tube
3
⁄
8
" O.D. Tube
1
⁄
2
" O.D. Tube
3
⁄
8
" O.D. Tube
1
⁄
2
" O.D. Tube
0'
65'
100'
0'
84'
100'
0'
93'
100'
4'
45'
100'
1'
78'
100'
2'
85'
100'
7'
31'
100'
2'
73'
100'
4'
77'
100'
8'
16'
64'
3'
68'
100'
6'
69'
100'
Inlet vacuum must not exceed 6 inHG
4'
63'
100'
8'
60'
100'
on a one-pipe system
5'
57'
100'
10'
52'
100'
6'
52'
100'
12'
44'
100'
7'
47'
100'
14'
36'
100'
8'
42'
100'
16'
27'
100'
9'
36'
100'
18'
—
76'
10'
31'
100'
*Suntec A Series pumps
11'
26'
100'
**Suntec B Series pumps
12'
21'
83'
Inlet vacuum must not exceed 6 inHG
13'
—
62'
on a one-pipe system. On a two-pipe
14'
—
41'
system, inlet vacuum must be less than
12 inHG for “A” model pumps and
17 inHG for “B” model pumps.
