Carlin 301CRD - Manual (Page 14)

Model 201CRD & 301CRD 240-VAC Advanced oil burners — Instruction manual
Carlin part number MN2301A Rev. 10/21/10
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Figure 15 Two-line fuel system
Table 5 Two-line fuel system maximum lengths for copper tubing
distribution. Use only for burners equipped with the
Suntec fuel units listed. See fuel unit data sheet for any
other fuel unit.
Two-line fuel system requirements
• See Figure 15 and Table 5. Use Table 5 only for burners equipped with the
Suntec fuel units listed. For burners using other fuel units, follow the fuel
unit manufacturer’s instructions for line sizing.
• Follow the guidelines in this manual regarding maximum lift and maximum
operating vacuum. If the fuel system exceeds the limits given in this manual
or the fuel unit manufacturer’s instructions for a single-stage pump (stan-
dard), install a two-stage fuel unit. If limits are still exceeded, follow the
fuel unit manufacturer’s instructions for installation of transfer pump(s) if
necessary.
• Always size fuel lines using an oil fl ow rate based on the fuel unit gearset
capacity, not the burner fi ring rate. See fuel unit data sheet for informa-
tion.
Install the fuel unit bypass plug when connecting to a two-line
system. The plug is shipped in a bag attached to the fuel unit,
along with a fuel unit data sheet.
Figure 14 One-line fuel system
One-line fuel system requirements
• See Figure 14.
• The standard burner fuel unit is a single-stage, 3450-RPM oil pump. Apply
this fuel unit only on one-line systems where the fuel supply is on the same
level with, or higher than, the burner. This ensures oil fl ow by gravity.
• Also make sure the total lift does not exceed 8 feet (height difference from
bottom of oil tank to fuel unit) when the fuel unit is a Model A2YA or B2YA;
or 2 feet when the fuel unit is a Model J or H.
• For other conditions, you must provide a two-line fuel system. You may also
have to change the fuel unit to a two-stage type.
One-line oil systems must be air-tight, to avoid air leaks into
the system or loss of prime. Use pipe dope where necessary,
but never use tape sealants. Verify the operating vacuum
does not exceed the limit given in this manual or the fuel
unit manufacturer’s instructions. Failure to comply could
result in sever personal injury, death or substantial property
damage.
3. Prepare burner
(continued)