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Figure 2: Typical Gas Piping Schematic for Model UCM Burner
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2.2.1 The UCM burner is designed for use with commercial standard grade No. 2 fuel oil.
2.2.2 It is recommended that prior to installation, NFPA 85 and all other national, state, local and other
applicable codes be reviewed to ensure total compliance with their requirements including, but not
necessarily limited to, the use of anti-siphon valve(s), oil safety valve(s) (OSV), or other acceptable
means to prevent siphoning of the oil when the tank is above burner level. Even if such devices are not
required by code, they should be considered good installation practice and mandatory when the tank is
above burner level.
2.2.3 Do not install manual valves in the return line between the pump and the tank unless required by a
specific code. If a manual valve is required, an automatic relief valve must be installed across the manual
valve to ensure that oil will bypass directly back to the tank in the event the manual valve is inadvertently
left in the closed position.
2.2.4 Use copper tubing with flare fittings or iron pipe on all installations. All units must utilize the proper size
and type of suction line oil filters (see Table 3 for sizing oil filters).
2.2.5 If the oil storage system has been used with fuel heavier than No. 2 fuel oil, the entire system should be
thoroughly cleaned and flushed before starting up the new system. Utilize fusible link and/or overhead
anti-siphon valves as appropriate.
2.2.6 If iron pipe oil lines are used on underground tanks, swing joints utilizing nipples and elbows must be
used and joined together, making certain the piping connections are tightened as the tank settles. Keep
swing joints in the suction and return lines as close to the tank as possible. Underground tanks should be
pitched away from the suction line end of the tank to prevent sediment from accumulating at the suction
line entrance. The suction line should be a minimum of 3” from the tank bottom.
2.2.7 Before starting up the system, all appropriate air and oil leak tests should be performed. Make certain
that the tank atmospheric vent line is unobstructed.
Summary of Contents for UCM-1000
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