NATURAL GAS IGNITION AND REGULATION
•
Turn the switch (1) on the control panel to the “O” position (open).
•
Turn the fuel change-over switch to the “GAS” position.
•
Check that there is water in the boiler and that the gate valves of
the system are open.
•
Make sure that the combustion products may be freely vented
through the boiler and flue dampers.
•
Make sure that the mains voltage corresponds to the manufactu
-
rer's requirements and that all electrical connections made at the
installation site are effected properly as illustrated in our wiring
diagram.
•
Bleed out the air contained in the gas piping, with due precau
-
tions and with doors and windows open.
•
Open the union on the pipe near the burner and then open slight
-
ly the gas shut-off cocks.
•
Wait the time necessary for the gas in the room to disperse
outside. Re-connect the burner to the gas pipeline.
•
Install a pressure gauge with adequate scale on the pressure
outlet of the gas pressure switch.
•
With the switch on the burner panel at the position “0” and the
main switch on, check, closing the contactor manually, that the
motor rotates in the right direction. If necessary, swap the two
power cables for the motor around to change the direction of
rotation.
•
If using the inverter, see the specific instructions in the quick
guide.
• Turn the main switch (1) to position "I" (closed) to supply power
to the equipment.
•
Close the thermostatic line by setting switch (2) to position "I"
(closed).
•
If thermostats or pressure switches (safety and boiler) are closed
as well, the burner operating cycle will start.
•
To adjust the minimum and maximum burner flow rate, refer to
the nozzle return flow/pressure diagram.
•
Keep an indicative value of O2 between 3,5 - 4 %.
•
When the burner is working at its "minimum" output, adjust the air
in the proper quantities to ensure a good combustion.
•
After adjusting the air for the operation at the "minimum" output,
increase the power and proceed to define the operating curve as
described in the equipment manual.
•
Check the combustion using the specific instrument at all inter
-
mediate points on the modulation curve.
•
Having finished the air and gas flow adjustment, check the actual
gas flow rate by reading the meter. Avoid keeping the burner run
-
ning if the heating capacity is greater than the maximum amount
allowed for the boiler, to avoid damaging it.
•
Upon defining the modulation curve, it is possible to have an
approximate estimate of the thermal flow rate delivered at the
intermediate points be measuring the gas pressure in the combu
-
stion head.
• Connect a pressure gauge with scale appropriate to the pressure
test port (G) and measure the gas pressure.
•
From the diagram obtain the thermal flow rate delivered, depen
-
ding on the value of the pressure measured without the back
pressure in the furnace.
IMPORTANT
This method permits only an approximate estimate of the
combusted thermal flow rate delivered, for a precise measuring,
refer to gas meter.
H1
H2
H7
H8
H10
H11
FUSE
F 6.3 A
S1
S24
S6
GAS
OIL
I
O
I
O
GAS
OIL
1
2
3
5
7
8
10
6
4
9
0002951050N7
1
Main switch ON - OFF
2
Thermostatic line switch
3 Display
4
Appliance shut-down indicator light
5
Power LED
6
Fan block
7
Gas operation light
8
Liquid fuel operation indicator light
9
Pump motor lock
10
Fuel switch (gas/liquid fuel)
0002951050N10
G
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0006160357_202305
ENGLISH
Содержание 56760010
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