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FIRST PIPES FILLING
After checking the plastic protective caps in the pump connections have been removed, proceed as follows:
1) Set the switch on the burner to its “0” position. This prevents automatic start up of burner and prevents the resistors
going on, which could burn if run with an empty tank.
2) Ensure that the motors are turning in the correct direction. To start up the motor, manually close the contactors
(pressing on the movable part) for a few moments and check the direction of rotation. If the direction of rotation
has to be changed, switch the two phases round on the line input terminals (L1 – L2 – L3).
N.B. Wait until the fan is turning very slowly to establish the direction of rotation with certainty, as the direction of
rotation can be wrongly interpreted.
3) If they have already been connected, detach the flexible pipes from the aspiration and return piping.
4) Immerse the end of the flexible aspiration hose in a container of lubrication oil or heavy oil (do not use low viscosity
products like light oil, petroleum or kerosene etc.).
5) Press the button “load tank” to start the pump. Wait until the pump has sucked up 1 or 2 cups of lubricant and then
stop. This operation has the purpose of preventing dry pumping and increasing suction power.
N.B. Pumps that work at 2800 rpm must not work dry, because they could bind and lock up quickly.
6) Now connect the aspiration hose and open any gate valves in the pipe, as well as any other part that shuts off the
fuel.
7) Press the “load tank” button again to start the pump that sucks up the fuel from the tank. Stop when you see the
fuel come out of the return pipe (not yet connected).
Note: If the piping is long it may be necessary to bleed the air out of the plug, if the pump has not gone one, remove
the pressure gauge attachment plug. In this case when you see fuel come out of the pressure gauge
attachment hole, you must stop and replace the plug. Then recommence tank loading and continue until it
is full (the pre-heater tank pre-heater is full when you see the fuel come out of the flexible return hose that
is not yet connected).
8) Connect the flexible return hose to the piping and open the gate valves on the hose.
The burner is now ready for ignition.
IGNITION AND ADJUSTMENT WHEN USING HEAVY OIL (See BT 8608/1 and BT 8653/1)
Check the following before ignition:
a) The connections to the electrical supply, with the thermostats or pressure switches, have been made exactly
according to the equipment’s wiring diagram.
b) That there is fuel in the tank and water in the boiler.
c) That all the gate valves on the heavy oil aspiration and return piping are open, as well as any other fuel cut off
component.
d) The discharge of combustion products is able to take place freely (boiler and flue dampers open).
e) Check that the burner’s combustion head penetrates inside the combustion chamber in accordance with the boiler
manufacturer’s instructions.
f)
The nozzles applied to the burner are right for the boiler capacity, if not replace with others. In no case must the quantity
of fuel supplied be greater than the maximum required by the boiler and the maximum allowed for the burner. Remember
that the blast-pipe has been designed for nozzles with a spraying angle of 45°.
Note: For good ignition and good combustion with the first flame alone it is necessary that the fuel supply is not
significantly lower than the minimum capacity (see plate) for the specific burner.
For ignition proceed as follows:
1) Remove the thermostat connection for the second flame if it is already connected.
2) Slightly open the air regulator to allow the air flow it is considered necessary for the working of the burner with the first
flame (see BT 8653/1). Adjust the air adjustment device to a middle position on the blast-pipe (see the chapter
“Adjustment of air at blast-pipe and BT 8608/1).