Install Instructions
49
Figure 26: Single Pipe Oil Line
SECTION X: OIL PIPING
A. GENERAL
1. Use exible oil line(s) so the burner swing door
can be opened without disconnecting the oil supply
piping.
2. A supply line fuel oil lter is recommended as a
minimum for all ring rates but a pleated paper fuel
oil lter is recommended for the ring rates below
1.0 GPH to prevent nozzle fouling.
3. Use Flared ttings only. Cast iron ttings cannot be
used.
NOTICE
DO NOT use compression ttings.
Oil piping must be absolutely airtight or leaks
or loss of prime may result. Bleed line and
fuel unit completely.
Refer to your local jurisdictions regarding
any special considerations for fuel supply
requirements. In addition, refer to NFPA 31,
Standard for the Installation of Oil-Burning
Equipment for Installations in the United
States and CSA B139-04 for Installation in
Canada.
4. Use of a high efciency micron lter (Garber or
equivalent) in addition to a conventional lter is
highly recommended.
5. Piping used to connect the oil burner to the oil
supply tank shall not be smaller than 3/8" iron pipe
or 3/8" OD copper tubing. Copper tubing shall have
a .032" minimum wall thickness.
WARNING
Under no circumstances can copper with sweat
style connectors be used.
NOTICE
Some jurisdictions require the use of a fusible
shutoff valve at the tank and/or the burner. In
addition, some jurisdictions require the use of a
fusible electrical interlock with the burner circuit.
Check your local Codes for special requirements.
B. SINGLE PIPE OIL LINES
1. Standard burners are provided with single-stage
3450 RPM fuel units with the bypass plug removed
for single-pipe installations.
2. The single-stage fuel unit may be installed single-
pipe with gravity feed or lift. Maximum allowable
lift is 8 feet. See Figure 26.
3. Fuel Oil Line Deaerator – On many occasions a
leaky oil delivery line can introduce air into the
fuel oil supply system. This often creates a rough
starting condition and can create a burner lockout
state. In addition to xing the leak, a fuel line
deaerator can be installed to eliminate air. The
single line from the fuel tank is connected to the
deaerator. The burner pump must be connected
to the deaerator as a two pipe system. Follow the
oil pump manufacturer’s recommendations for
conversion to a two pipe system.