LAARS Multi Flue CF-100-3 - Install and Operating Manual - Manual (Page 13)

13
T’stat information continued-
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,
the cad cell will cause the relay to cut off for protection. It may then be
necessary to push the reset button on the burner on the burner module.
WARNING
DO NOT ATTEMPT TO START THE BURNER WHEN
EXCESS OIL HAS ACCUMULATED, WHEN THE UNIT IS FULL
OF VAPOR, OR WHEN THE COMBUSTON CHAMBER IS HOT.
TUNE-UP PROCEDURE
A. To Put The Burner in Operation: Remove the temporary oil
connection previously used and install a pressure gauge. Set all the
controls to the normal starting position. Close the main cut out
switch. The burner should start, ignite and burn. After you have
obtained a flame, the oil pressure should be checked and adjusted to
a pressure of 100 psi. This is the normal operating pressure. The air
inlet can then be adjusted so that the flame is a clean yellow with
slightly smoky tips. The burner flame can be observed through the
peep site hole. It may be necessary to readjust the air inlet after the
burner is running twenty minutes or more in order to obtain the
proper fire with a hot combustion chamber. After final adjustment,
tighten lock screws on air inlet, let unit cool and restart burner to be
sure burner operates on a cold start. Remove the pressure gauge
and install pipe plug.