Diamond 393265 Podręcznik - Strona 7
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Drukuj stronę5. CONNECTIONS
• Any installation work or maintenance to the
supply system (gas, electricity, water) must only
be carried out by the utility company or an
authorised installation technician.
• Refer to the appliance dataplate for the product code.
• See the installation diagram for the type and position of
appliance connections.
5.1. GAS APPLIANCES
IMPORTANT! This appliance is arranged and tested to ope-
rate with G20 gas 20mbar; to convert it to another type of
gas, follow the instructions in par. 5.1.6. of this section
5.1.1. BEFORE CONNECTING
•
Make sure the appliance is arranged for the type of gas
to be used. Otherwise, carefully follow the instructions
given in the section: "Gas appliance conversion /
adjustment".
•
Fit a rapid gas shutoff cock/valve ahead of each
appliance. Install the cock/valve in an easily accessed
place.
•
Clean the pipes to remove any dust, dirt or foreign matter
which could block the supply.
•
The gas supply line must ensure the gas flow necessary
for full operation of all the appliances connected to the
system. A supply line with insufficient flow will affect
correct operation of the appliances connected to it.
•
Attention! Incorrect levelling of the appliance can affect
combustion and cause malfunctioning.
5.1.2. CONNECTION
• See the installation diagram for the position of the gas
connection on the bottom of the appliance.
• Remove the plastic protection (if present) from the gas
union before connecting.
• After installation, use soapy water to check connections
for leaks.
5.1.3. SUPPLY PRESSURE CHECK (all versions)
Make sure the appliance is suitable for the type of gas
available, according to that given on the dataplate (otherwise,
follow the instructions given in the section. "Conversion to
another type of gas"). The supply pressure must be measured
with the appliance operating, using a pressure gauge (min.
0.1 mbar).
• Remove the control panel.
• Remove retaining screw "N" from the pressure point and
connect the manometer "O" (fig. 2A and 2B).
• Compare the value read on the pressure gauge with that
given in Table B (see handbook Appendix)
• If the pressure gauge gives a reading outside the range
of values in Table B, do not switch the appliance on.
Consult the gas company.
5.1.4 GAS PRESSURE REGULATOR
If the gas pressure is higher than that specified or is difficult
to regulate (not stable), install a gas pressure regulator
(accessory code 927225) in an easily accessed position
ahead of the appliance.
The pressure regulator should preferably be fitted horizontally,
to ensure the right outlet pressure:
• "1" connection side gas from mains.
• "2" pressure regulator;
• "3" connection side gas towards the appliance;
The arrow on the regulator (
direction.
2
NOTE! These models are designed and certified for use with
natural or propane gas. For natural gas, the pressure regulator
on the header is set to 8" w.c. (20mbar).
5.1.5. PRIMARY AIR CHECK
The primary air is correctly adjusted when the flame does
not "float" with the burner cold and there is no flareback
with the burner hot.
•
Undo screw "A" and position aerator "E" at distance "H"
given in Table B; retighten screw "A" and seal with paint (fig.
3A, 3E oven).
5.1.6. CONVERSION TO ANOTHER TYPE OF GAS
Table B "technical data/gas nozzles" gives the type of nozzles
to be used when replacing those fitted by the manufacturer
(the number is stamped on the nozzle body).
At the end of the procedure, carry out the following check-
list:
Check
• burner nozzle/s replacement
• correct adjustment of primary air supply to
burner/s
• pilot nozzle/s replacement
• minimum flame screw/s replacement
• correct adjustment pilot/s if necessary
• correct adjustment of supply pressure
(see technical data/gas nozzles table)
• apply sticker (supplied) with data of new gas type
used
) indicates the gas flow
3
1
Ok
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