Oil Piping; Single Pipe Oil Lines - Burnham MEGASTEAM MST513 Installation, Operating And Service Instructions

A. GENERAL
1. Use flexible oil line(s) so the burner swing door
can be opened without disconnecting the oil supply
piping.
2. A supply line fuel oil filter is recommended as a
minimum for all firing rates but a pleated paper fuel
oil filter is recommended for the firing rates below
1.0 gph to prevent nozzle fouling.
3. Use Flared fittings only. Cast iron fittings cannot be
used.
NOTICE
Do not use compression fittings.
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.
4. Use of a high efficiency micron filter (Garber or
equivalent) in addition to a conventional filter 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.
SECTION VII: OIL PIPING
Figure 1: Single Pipe Oil Line
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 21.
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 fixing 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.
41