FireLake 155 Owner'S Manual Download

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INITIAL START UP AND OPERATING SEQUENCE B5 & K5 BURNERS

(NOT B5 TWO STAGE BURNERS)

1. Place the 3-position toggle switch on the Burner to “OFF”. Energize the heater circuit with electricity.

The amber and red lights on the slide gun will come on.     Flip the 3-position toggle switch on the Burner to
“PRIME”.       The pump will start.     Open the bleed valve on the pump to relieve air, have a shop towel ready,
after a few minutes there will be oil and air sputtering from the bleeder.      Close the bleeder when oil runs free
of air.      Oil will now start filling the line toward the burner.

2. Since the oil line is not attached to the burner yet have a bucket ready to catch oil, but be patient. It may take

20 minutes to prime the pump and get oil to the burner.

3. Once the line is filled you will start catching the contaminated oil in your bucket. When the oil is free of air

and debris run another few gallons more and close the purge valve or connect the oil line to burner. Flip the
3-position toggle switch on the Burner to “RUN”.

4. By now the red light indicating preheating of the oil may have gone off. If it has, turn the wall thermostat to a

setting higher than room temperature. The burner will start.

5. The fuel pump, burner motor, igniter starts and compressed air pushes toward the nozzle. When air pressure of

12  psi  is  achieved  at  the  air  proving  switch,  the  air  proving  switch  closes  providing  power  to  the  oil  solenoid
valve & green light.   The green light comes on indicating the burner is firing, as air in the oil line escapes the
nozzle the burner may sputter.

6. Adjust (Needle Valve on K5 burner)(Air Regulator on B5 burner) to have compressed air approximately 13 psi

going to nozzle. Air regulator requires the cap to be popped up before twisting knob, push back down after
adjusting.

7. The preheated oil and air are mixed at the nozzle and the fuel is atomized as the electrodes arc for ignition.

The red light will cycle on/off to automatically to preheat oil in block.

8. Observe flame. A proper flame in Model 155, 200, 245, 315 will extend 1/4 to 1/3 the way down chamber

approximately under where the blower is mounted. Three pass heater designs Model 235, 350, 500 will have
flame approaching the target wall.

Excessive flame in any heater will damage metal, burn poorly, and void

warranty.

If an adjustment is needed, take a portable phone to the heater, call your equipment dealer

and explain the situation. They will assist you to set oil or air flow for proper flame.

On non-metering pump heaters to adjust flame loosen nut on brass oil regulator and slightly

turn screw while observing flame.

On metering pump heaters they are factory set for oil flow. If you believe the flame is

improper advise your dealer, they can confirm you have the proper pump and advise you of options.    If there is
a brass oil pressure regulator on the burner it is not required when using a metering pump, the regulator may be
removed.   If the brass oil regulator is left on the burner turn its screw full clockwise to 100% flow, it will then
have no affect on oil flow.

9. If a consistent flame is not established during the initial 30 seconds the primary control will

lockout………

Beware some controls will retry ignition after 45 seconds automatically.

DO NOT attempt

to manual restart a control until the heater has time to cool down and any unburned oil mist has exited
the chamber. Forcing a quick restart can put hot oil on the hot surfaces of the heat exchanger and may
cause an explosion hazard, or excessive fire leading to personal or property damage.

It is not unusual to

lock out one or two times at startup until air and oil have purged through the slide gun.