Operating instructions

OPERATION
980076 08/26/033-14
ELECTRICAL SYSTEM
Besides the basic engine starting and alternator
electrical circuits, your unit has another electrical
circuit which, providing conditions are right, will turn
your fuel oil burner on and off. This other electrical
circuit functions as follows: Current flows from the
battery through a circuit breaker to the master switch
on the unit. Once this master switch is turned on, the
engine may be started and the current will flow to
the thermostatic temperature control.
Providing the water temperature is lower than the
setting on the thermostat, it will close allowing the
current to flow to the burner switch. If this switch is
on, current will flow to the water pump clutch switch,
if energized, current will flow to the flow switch.
If water is flowing through your unit, this switch will
close, allowing current to flow and energize the
burner solenoid. When this solenoid is energized, it
will open allowing the burner to ignite.
Once your burner is burning, it will continue during
the normal operation unless:
1. The cleaning wand is closed. It will shut off and
will re-ignite when the wand is opened.
OR
2. When the temperature reaches the setting on
the thermostat, the burner will shut off, and if the
temperature drops below the setting, it will
ignite.
Besides the manual shut-off on the master switch,
there is an automatic shut-off that is energized by a
high temperature switch. This switch will
automatically shut the unit down in the event of
excess temperature.