Bradford White 30S Installation & Operating Instruction Manual page 13

T'stat information Continued-
Figure 4 – Thermostat with cover removed
Escaping flue gases can be lethal. Make sure that the flue and
venting system is checked at least once a year by a plumbing
professional or the oil supplier's service technicians.
Motor Lubrication: Oil motor with one or two drops of non-detergent motor
oil.
Priming The Fuel Units: Locate the air bleed valve on the fuel unit (pump).
Place a container underneath the air bleed valve. Open the air bleed valve by
turning it one quarter of a turn in the counter-clockwise direction. Turn the
thermostat on the water heater to a setting that is high enough to allow the
burner to operate. Turn on the power supply to the burner. After the air is
pumped out of the fuel unit, let at least one pint of oil flow into the container.
While running under these conditions, the pressure valve in the pump will not
open; hence, there will be no flame. When a pint of oil has flowed into the
container, close the air bleed valve. The burner should start burning when the
air bleed valve is closed.
The above is not necessary when a two-pipe system is used. Install the
pressure gauge and turn burner on. The system will vent itself through the
return line and flame will appear as soon as the air has been eliminated. In the
event a lot of air is present and flame is not sighted within 45 seconds,
WARNING
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