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METHANE LIGHTING AND REGULATION
•
The air contained in the piping must be bled out, with due
precautions and with doors and windows open. Open the fitting
on the piping situated near the burner and then open a little the
gas shut-off valve (or valves). When the characteristic odour of
gas can be smelled, close the shut-off valve. Wait long enough
for the gas in the room to disperse, and then connect the burner
to the gas pipe again and open the valve again.
•
Check that there is water in the boiler and that the gate valves
on the system are open.
•
Make absolutely sure that the products of combustion can be
released freely (boiler gate valve and stack open).
•
Make sure that the voltage of the power line to which the burner
is to be connected corresponds to that required by the burner
and that the electrical connections (motor or main line) are
designed for the voltage rating available. Also check that all
the electrical connections carried out on site are in accordance
with our wiring diagram.
•
Make sure that the combustion head is long enough to enter the
furnace to the extent specified by the boiler manufacturer. Check
that the air adjustment device on the combustion head is in the
correct position for the fuel supply required (the air passage
between the disk and the head must be reduced for low supply
and relatively wide when supply is higher). Refer to the chapter
"Air regulation on the combustion head".
•
Fit a pressure gauge of appropriate scale to the pressure intake
on the gas pressure switch (if the amount of pressure to be used
allows it, we recommend to use a water column instrument; do
not use instruments with indicator hands for low pressures).
10
3
11
1
Main switch on / off
2
programming keys
3
Display
4
Confirm or RESET key
5
Fuse
9
Fuel fill button
10
Fuel switch
11
Thermostatic line switch
2
1
5
4
9
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0006160034_201307
•
With the switch (1) on the mimic panel switched to "O" and the
main switch turned on, manually close the remote control switch
and check that the motor revolves in the correct direction. If
necessary, exchange the position of the two cables in the line
that feeds the motor in order to reverse the direction of revolution.
•
Now switch on the main switch. This powers on the control
device, and the programmer turns on the burner as described
in the chapter "Operation description". For burner adjustment,
refer to the supplied instructions for the "BT 3xx" electronic cam.
•
After having adjusted the "minimum", (200) bring the burner
towards the maximum, using the controls on the "BT 3xx"
keyboard.
•
We recommend that you check combustion using the appropriate
instrument at all intermediate points on the modulation route (from
200 to 999), checking the gas flow rate by reading the meter.
It is essential to check, with a suitable instrument, that the
percentage of carbon monoxide (CO) present in the fumes
does not exceed the limit set by regulations in force at the time
of installation.
•
Now check the proper automatic operation of modulation.
This ensures that the equipment receives the signal from the
electronic modulation regulator, if the burner is the modulating
model, or from the second stage thermostat or pressure switch,
if it is a two stage progressive burner.
•
The air pressure switch has the purpose of switching the
equipment into the safety (lock-out) state if the air pressure is
not what it should be. The pressure switch must therefore be set
to close the contact (closed during operation) when air pressure
in the burner is sufficient. The pressure switch connection circuit
is self controlling. Therefore, the contact which is meant to be
closed in a non operating status (fan stopped and thus no air
pressure in burner), should in fact be in this status, otherwise
the command/control equipment will not be switched on (burner
remains inoperative). please note that if the contact meant
to be closed during operation does not close (insufficient air
pressure), the equipment carries out its cycle but the ignition
transformer is not switched on and the fuel valves do not open.
As a result, the burner stops. To verify that the air pressure switch
is operating correctly, while the burner is ignited at its minimum
setting, increase the adjustment value until the switch triggers
instant "lock" stop of the burner. Reset the burner by pushing
the appropriate button and readjust the pressure switch to an
adequate value to detect the existent air pressure during the
pre-ventilation phase.
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