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- Using a CH11 spanner open the manual air vent valve located
above the air box; the tube supplied with the boiler must be
connected to the valve to let out the water into an outside
container.
- Turn on the system filling tap on the hydraulic unit and wait until
the water starts coming out of the valve. Make sure that it comes
only water.
- Close the manual air vent valve with the CH11 spanner.
- Turn off the system filling tap when the water pressure indicated
by the hydrometer reaches 1-1.5 bar.
- Switch on the power supply to the boiler leaving the boiler in OFF
mode. Check that the gas tap is closed.
- The boiler, now, starts the vent cycle. Perform it by checking
that there is no air inside the boiler and that the pressure does
not drop too much (otherwise repeat the operations described
above).
- Turn on the gas tap and ignite the boiler.
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Before the ignition and the functional testing of the
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boiler, it is necessary to:
- check that the system fuel and water supply taps are open
- check that the gas type and the power supply pressure are those
for which the boiler is designed
- make sure the cap on the vent valve is open
- check on the display that the pressure of the water circuit when
cold is between 1 bar and 1.5 bar and that the circuit is vented
- check that the pre-loading of the expansion tank is adequate
(see the "Technical data" table)
- check that the electrical connections have been carried out
correctly
- check that the combustion product outlet and air suction pipes
were adequately realised
- check that the circulator turns freely; undo the inspection screw
and check with a flat screwdriver that the rotor shaft moves
without hindrances.
9
Before loosening or removing the closing tap of the circulator,
protect the underlying electrical devices from possible water
leakage.
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The
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rst time you turn the boiler on and in case of maintenan-
ce work, before using the appliance you must
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ll the siphon
with water and make sure that the condensation is evacuated
correctly.
Fill the condensation collection siphon pouring 1 litre of water into
the boiler combustion-analysis outlet with the boiler off, and check
that:
the safety cut-off device is
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oating
water is
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owing correctly from the discharge pipe out of the boiler
the condensate outlet connection line is watertight.
If the condensate outlet circuit (siphon and pipes) is working cor-
rectly, the condensation level will not exceed the maximum.
Filling the siphon before using the appliance, and the use of a sa-
fety cut-off device inside the siphon, prevent exhaust gases from
being released into the environment.
Repeat during standard and non-standard maintenance work.
~15 mm
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- Adjust the ambient temperature thermostat to the desired
temperature (~20°C) or, if the system is equipped with a
programmable thermostat or timer, ensure that the thermostat or
timer is "active" and set correctly (~20°C)
- A variety of information appears on the display for each power
supply, including the value of the flue gases probe meter (-C- XX
- see "Display and fault codes" - Fault A 09), the boiler will then
start an automatic venting cycle of about 2 minutes
- The display shows the symbol
To stop the automatic venting cycle, proceed as follows:
- access the electronic board by removing the housing, turning the
instrument panel forwards you and opening the terminal board
cover.
Then:
- press the CO button.
9
Live electrical parts (230 Vac).
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To start up the boiler it is necessary to carry out the following
operations:
- power the boiler
- turn on the gas tap to allow fuel flow
- adjust the ambient thermostat to the required temperature
(~20°C).
Turn the mode selector to the required position:
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Turn the function selector to within the adjustment range. The
boiler produces domestic hot water and heating water. The boiler
lights automatically in response to a heat request. The digital
display indicates the heating water temperature. The boiler lights
automatically in response to a request for domestic hot water. The
display indicates the domestic hot water temperature.
