Form 465, Page 10
Remote Fuel Pump
The Model OT-250 tank has a platform designed for attaching the remote
fuel pump.
•
Mount the remote pump assembly in an upright, horizontal position
as shown in the illustration.
•
Attach the fuel pump legs permanently either on the platform,
directly to a field-supplied tank, or in a location within five feet of
the oil tank.
NOTE: Do not mount the pump assembly in a vertical
or inverted position. Pump must be indoors.
Pump
Oil Supply
Line
Installation
CAUTION: Do not use TEFLON
®
based pipe dope or
TEFLON
®
tape to seal any pipe connections. (TEFLON
®
is a registered trademark of DuPont chemical.) Use of
TEFLON
®
based pipe dope or TEFLON
®
tape will void
the pump warranty.
Supply Lines
Read this section carefully before installing any supply lines. Since a suc-
tion line leak is nearly impossible to find, take your time to assure all con-
nections are leak-free during installation.
Supply lines and fittings are
furnished by the installer.
See the following illustration for minimum fit-
tings required. Length of pipe and tubing depends on the installation.
Run the suction line, using 1/2” standard black iron pipe, between the inlet
side of the filter and the foot valve. (Refer to the illustration.) A fuel line
filter with a cleanable strainer, a foot valve, a foot valve strainer, and a
vacuum gauge are provided with the heater. To prevent air from entering
the line, do not use union connections at joints. Install the suction line com-
ponents as illustrated. With the vacuum gauge mounted on the outlet side of
the filter, the gauge will indicate any suction line restriction including a
dirty filter. A pump inlet manifold is supplied for direct connection of the
filter to the inlet of the pump.
The supply line between the outlet side of the fuel pump and the heater
should be 3/8” O.D. copper tubing with a minimum of 1/32” wall thickness
with 45
o
flare fittings. The supply line must continually rise. A lift height of
up to 15 ft (4.5 M) is acceptable with a maximum total length of 60 feet (18
M) of tubing.
Do not install manual valves in the supply line.
Connect the fuel line to the heater at the connection on the corner of the
service tray.
The 50 psi relief valve supplied with the pump and a return line of 1/8”
NPT black iron pipe must be installed as illustrated. All piping should be
