Fuel System Installation - Thermo Products Spirit Series Installation, Operation And Service Manual

Figure 1: Side view of correct burner insertion into combustion chamber
The oil burner provided with this furnace requires initial inspection, set-up, and proper
adjustment. Refer to this manual and the oil burner manufacturer's operating instructions
for detailed information on the following items.
 Initial firing of burner
 Adjusting the burner combustion air
 Adjusting the fuel pump pressure
 Setting the draft control
NOTICE: This oil furnace must be installed and adjusted by only qualified oil
heating contractor using calibrated combustion test instruments to ensure safe
and reliable operation of the furnace.

Fuel System Installation

In situations where the oil storage tank is installed at the same level with, or above, the
burner, a single oil supply line run from the oil tank to the burner will be usually be
adequate. No return line will be required. If the oil tank is installed below the burner and
the lift exceeds approximately 6-ft., an oil supply line and an oil return line are
recommended.
Refer to the Standard for the Installation of Oil-Burning Equipment, NFPA 31-2020, or
latest edition and the oil burner operating instructions for detailed information on oil
storage tank & oil supply/return line installation.
NOTICE: We recommend installing a high efficiency oil filter, in the oil supply line,
capable of filtering 10 to 20 micron diameter (or preferably smaller) particles from
the fuel
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