47
ENGLISH
IGNITION AND ADJUSTMENT WITH HEAVY OIL
1)
Check that nozzle characteristics (flow and spray angle) are suitable for the combustion chamber (see BT
9353); if they are not replace the nozzle with one that is suitable.
2)
Check that there is fuel in the tank and that it is, at least on a visual check, suitable for the burner.
3)
Check that there is water in the boiler and that system gate valves are open.
4)
Check with absolute certainty, that combustion products are able to escape freely (boiler damper and flue
open).
5)
Check that the voltage on the power line to which you intend to connect corresponds with that required by the
burner and that all motor and heating element connections are properly arranged for the available voltage.
Check that all electrical connections made at the installation site are carried out properly as per our wiring
diagram.
6)
Make sure that the combustion head penetrates into the combustion chamber to the extent requested by the
boiler makers.
Check that the air adjuster device on the combustion head is in a position assumed to be suitable for supply
of the relevant fuel (the air passage between disk and head must be significantly closed where fuel flow is
relatively reduced; on the other hand, where nozzle flow is rather high, the air passage between disk and head
must be relatively open). See the chapter “Adjusting the combustion head”.
7)
Remove the cover from the rotating disk (on the modulation motor) where the adjuster screws that control fuel
and relative combustion air are housed.
8)
Turn the two modulation switches in the “MIN” (minimum) position to “MAN” (manual).
9)
Adjust the element control thermostat incorporated in the line filter to around 50°C.
Adjust the minimum thermostat “Tmin” in the preheater thermostats unit to a temperature thought to be
adequate. The temperature to which the minimum thermostat must be adjusted depends on the type of fuel
used. Consult the viscosity-temperature chart, bearing in mind that the fuel must reach the nozzle with
viscosity no greater than 2 °E. Heavy oil heating temperature can be modified via the adjuster thermostat
or (where installed) via the “MS 30” electronic regulator; such temperature must be around 20°C higher
than the setting on the minimum thermostat.
Note: The specific instructions for the electronic regulator are given on the following pages.
10)
Start up the auxiliary fuel feed circuit, check that it is working efficiently and adjust pressure to approximately
1 bar.
11)
Remove the plug (on the vacuum meter coupling seat) from the burner pump and then slightly open the gate
valve on the fuel infeed pipe. Wait for the fuel to exit the hole (there should be no air bubbles) and then re-
close the gate valve.
12)
Fit a pressure gauge (end of scale approx. 3 bar) to the on-pump vacuum meter coupling seat in order to
check the pressure at which fuel arrives at the burner pump. Apply a pressure gauge (end of scale approx. 30
bar) to the on-pump pressure gauge coupling seat in order to check the working pressure of the pump itself.
Apply a pressure gauge (end of scale approx. 30 bar) to the return pressure regulator coupling to check the
value that determines flow (see drawing. n° 0002900311).
13)
Turn the main switch “Q1” to on and the start/stop switch “S1” to “0” (off) to prevent the elements being
switched on with the tank empty. Make sure that the fan motor and pump motor turn the right way.
For the pump motor turn the switch “S1” to on and press the tank loading switch; for the fan motor manually
close contactors “KL” (line) and “KY” (star) simultaneously by pushing the mobile part of the contactor; do not
close “KD” (triangle). To invert the direction of rotation exchange two power line wires relative to the motor
which turns the wrong way.
WARNING. Pressing the tank loading button cuts power to the control box and the heating elements on the
preheaters are therefore off. Nevertheless, do not turn on the preheater elements with the preheater
tank empty.
14)
Run the burner pump by pressing the tank filling button until the gauge that reads the working pressure of the
pump shows slight pressure. Slight pressure in the circuit confirms that preheater tank filling has been com-
pleted.
Summary of Contents for GI 1000 DSPN
Page 23: ...23 ITALIANO SCHEMA DI PRINCIPIO REGOLAZIONE ARIA PER MODELLO GI 1000 DSPN D N 0002933410 ...
Page 50: ...50 ENGLISH BURNER GI 1000 DSPN D AIR FEEDING ADJUSTMENT PRINCIPLA DIAGRAM N 0002933410 ...
Page 51: ...51 ENGLISH N 0002933930 BURNER GI 1000 DSPN D GAS PILOT ADJUSTMENT PRINCIPLE DIAGRAM ...
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