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4.8. REGULATING COMBUSTION AND ANALYSING COMBUSTION
PRODUCTS
Warning
The first start-up should always be carried out by a
specialised technician checking the correctness of the
combustion parameters.
Warning
The burner settings are pre-set at the factory and may not
comply with those required, therefore, the settings need to
be checked and, where necessary, corrected.
The adjustment values (gas fuel pressure, burner gas pressure,
combustion head position, air adjustment) for each of the burners
approved for these units are indicated in the "TECHNICAL
CHARACTERISTICS TABLE".
The probe used to periodically check combustion and flue smoke
temperatures is to be inserted as indicated:
Combustion is clean and stable when combustion values are as
follows:
Index Bacharach
CO
2
Oxygen (O
)
2
CO
ma
You may have to change the burner settings due to the fuel used
and/or installation conditions (high altitude, air suction pipe with or
without Snorkel, etc.) if combustion parameters are not correct.
When inspection tests are completed, the hole drilled for the probe
must be sealed with a material that is resistant to high
temperatures and that ensures the tube remains airtight.
Warning
Upon completing the aforementioned operations, the
declaration
of
assembly
penultimate page of this manual is to be completed in full
and signed.
5. OPERATING INSTRUCTIONS
5.1. START
To start the heater:
• Make sure the switch (a) is set to "0";
• Supply electrical power to the space heater by pulling up the
disconnecting switch on the electric power panel: the green lamp
(b) will light up indicating that power is being supplied to the
panel;
L-L 229.01-SO
NATURAL GAS
LIQUID GAS
G20 - G25
G30 - G31
-
0 (white)
8,5 ÷ 9,5 %
11,5 ÷ 12,5 %
4,5 ÷ 6 %
4,5 ÷ 6 %
100 ppm
100 ppm
and
installation
on
EN
• Press the switch (a) in the H or H+V position: the burner will begin
the start-up and pre-wash cycle, after which the flame will ignite;
after the combustion chamber has been heating for a few
minutes, the main fan will start up;
Warning
The fan runs continuously in H+V mode, even when the
desired room temperature has been reached, and the
burner turns off.
Warning
In H mode, the fan only runs when the combustion
chamber is sufficiently hot. Therefore, when the desired
room temperature has been reached, the burner turns off
and the fan keeps running only until the combustion
chamber has cooled completely.
• If the heater does not work during the start cycle or work cycle,
consult "TROUBLESHOOTING" to find the cause of the
malfunction.
Warning
In case of safety stop, you have to push the reset button
(d) for 3 seconds to restart the heater.
Warning
NEVER do more than two restarts in a row: unburned fuel
can accumulate in the combustion chamber and suddenly
flare up at the next restart.
5.2. STOP
To stop the heater turn and press switch (a) to "0" position or, if the
heater is in automatic mode, by setting the room thermostat to a
lower temperature: the burner shuts off and lamp (f) goes out. The
fan keeps running until the combustion chamber has cooled
completely.
Warning
Never stop the heater by simply turning off the
disconnecting switch on the panel.
The electrical supply must be disconnected ONLY when
the fan has come to a complete stop.
5.3. VENTILATION
To run the heater only in continuous ventilation mode, turn switch
(a) to the position with the symbol V.
Warning
All of the operations described in this section must be
performed by professionally qualified personnel only.
The following procedures must be done at regular intervals to
the
ensure efficient operation of the heater. Make sure you have
detached the electrical power line from the heater before starting
any work.
Warning
Before doing any maintenance:
• Stop the heater as indicated in the "STOP" paragraph;
• Switch off the power supply by means of the cut-off on
the electrical panel;
• Wait until the heater cools.
6. MAINTENANCE
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