Accorroni GHIBLI 4-5-6 ELITE, Техническая информация

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page 18
an adequate rating to be used as a general
switch to turn off the appliance(s).
Connect the power supply cable to the phase,
neutral terminals and to the earth connection of
the appliance. Insert the power supply cable
through the special cable gland, making sure to
cut the wires so that the yellow/green earth cable
is slightly longer than the other two.
This precaution, in case of accidental
detachment, allows the earth cable to be the last
connection to be removed
(fig. 19) .
Comply with the phase/neutral polarity,
otherwise the control equipment will gene-
rate a safety lock out.
THESE APPLIANCES MUST BE EARTHED.
4.4.7 Using a timer (the kit is supplied on
request)
To operate the air heater automatically at
predetermined hours, it is possible to install a
digital timer on the appliance, even after the
appliance has already been installed. The timer
is supplied on request as an assembly kit.
4.4.8 Connecting more than one unit with a
single external timer
To operate several appliances with just one
timer follow the diagram given in
fig. 20 to avoid
malfunctions of the entire installation.
To complete this special connection, use a
normally open contact relay with an adequate
rating. Terminals 3 and 4 will be connected to the
terminal board of the appliances, after having
removed the existing bridge.
5. START-UP
WARNING! The appliance initial start-up
operations and tests must be performed by
skilled technical personnel.
5.1 TESTS
5.1.1 Before starting the air heater, make sure
that all the current provisions and standards
relevant to the installation of these appliances
have been observed. Pay particular attention to
the correct positioning of the combustion
product exhaust terminal.
5.1.2 Make sure that the single-phase, 230 V ~
50 Hz electric power supply and the earth wire
are connected to the special air heater terminals.
The phase conductor must be connected to the
terminal marked with the letter "L", otherwise the
control equipment will generate a safety lockout.
5.1.3 Check that the gas injector mounted on
the burner corresponds to what is indicated for
the type of gas to be used
(table on page 11)
.
WARNING! The appliance are delivered
already set in the factory to use natural gas
G20, with a supply pressure of 20 mbar.
Instead, if gas from the third group is used
(G30 - G31), first carry out the operations
described in point
6.1.
5.1.4 Check that the gas on-off valves on the
meter and on the air heater are open. Make sure
that the air inside the gas supply piping has been
purged.
Fig. 20
4
3
1
st
heater 2
nd
heater
4
3
n th heater
n
2
1
n
2
1
Relay
with n
contacts
timer
switch
Neutral
Phase
4
3
Fig. 19
POWER SUPPLY CABLE CONNECTION
Brown
Yellow / Green
Blue