20
7.0 FUEL SYSTEM
The fuel system piping must comply with the fuel pump manufacturers’ specifications which are
included with the burner. In addition, all fuel system piping must comply with local codes and
ordinances.
•
The quality of your fuel oil is of
great importance
. For most instances your burner is
designed to burn clean, water free, #2 fuel oil.
•
The oil supply line should be constructed of seamless heavy wall copper tubing with flared
fittings. Only oil resistant pipe dope should be used on threaded connections. The use of
Teflon Tape
will void manufacturers’ warranty. Lines must be airtight, clean and free of
kinks. All joints and
threaded fittings must be checked for leaks. A vacuum gauge should be
employed when testing the installation. It is recommended that older fuel lines be replaced.
•
A two-pipe system should only be used when the oil supply is well below the pump. A return fuel line
may be used on inside installations where the tank level is below the level of the burner. The return
line must be equal in diameter to the suction line. The minimum size for the oil line is 3/8” copper
tubing. Do NOT install any valve in the return line.
•
An
oil de-aerator
is recommended when the oil tank is located 5’ or more below the burner.
•
Shut off valves must be installed in the supply line at or near the oil storage tank and at the burner in
compliance with all codes. Inspect the shut off valve spindle packing for tightness to ensure that
there are no air leaks. The burner should be tagged to indicate that the fuel supply has been closed
off. The electrical circuit to the burner must be cut off by removing the fuse or circuit breaker to
ensure that no operation of the burner will occur while the fuel supply is shut off.
CAUTION:
ALWAYS KEEP THE OIL SUPPLY VALVE SHUT OFF IF THE BURNER IS SHUT
DOWN FOR AN EXTENDED PERIOD OF TIME.
•
Only certified fuel storage tanks and accessories approved as prescribed by local code may be used.
•
The installation of 2, 10 micron oil filters, one at the tank and the other at the burner is recommended.
•
Automatic oil safety valves (O.S.V. / P.R.V.) are recommended to provide automatic shut-off for the oil
supply incase the line between O.S.V. device and burner fuel pump is broken or damaged.
OIL TANK AND PIPING
Draft
regulator
O.S.V.
or
P.R.V.
Shut off
Summary of Contents for Cast Iron Boiler Series
Page 26: ...26 10 3 HYDROSTAT 3250 CONTROL Setting the control...
Page 27: ...27...
Page 30: ...30 12 0 EXPLODED PARTS VIEW...
