11
Install Oil tank and piping in accordance with the
National Board of Fire Underwriters and in absence of such
regulations in accordance with authority having jurisdiction.
Oil storage tank, vent, fill pipe and caps should be in
accordance with the authority having jurisdiction.
In no case should vent pipe be smaller than 1-1/4"
A.
I.P.S.
Fill pipe should not be less than 2" I.P.S.
B.
Suction line from tank to burner should be one
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continuous piece of tubing to prevent air entering line.
Suction line, must be 3/8" O.D. copper tubing for runs
of 50 feet or less, and 1/2" O.D. for longer runs.
Oil return line, same size as suction line, must be used
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on any installation where bottom of tank is below fuel
unit of burner.
Oil lines should be buried or otherwise protected from
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mechanical injury.
Flare fittings on all oil lines are recommended.
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Compression fittings on suction line often allow air to
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be drawn into fuel pump, making it difficult to maintain
oil pressure at nozzle.
OIL tANk ANd pIpINg
Do not run overhead fuel lines from tank to oil burner.
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Fuel pump connections and by-pass should be made
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according to instructions attached to fuel pump. If
tank is more than 20' from the boiler, a two stage
fuel unit should be installed in place of single stage
pump supplied as standard equipment with burner.
Make certain rotation and speed are same and pump is
suitable for burner horsepower rating.
Oil line filter and shut-off valve should be installed in
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suction line.
Shut-off valves should be installed in both suction
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and return lines at burner for convenience in servicing
burner.
Allow extra tubing at burner so burner may be removed
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from boiler for cleaning without disconnecting tubing.
(See Figures 10 & 11).
A UL approved flexible oil line may be used.
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Figure 10 - Typical Installation Single Pipe Oil
System
Figure 11 - Typical Installation Two Pipe Oil
System
