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ENGLISH
3.15
Emptying the domestic hot water circuit (only C.S.I.
model)
When there is risk of frost, the domestic hot water system must be
emptied in the following way:
- close the water mains tap
- open all the hot and cold water taps
- empty the lowest points.
3.16
Cover connections
The installation completed, it is possible to apply the cover
connections as shown below:
- position the cover connections so that the lateral slots are in
correspondence with the holes (A) present on the bracket
- using anchor bolts supplied, secure from the inside the cover to
the shell.
Do not tighten the pins in the bottom, but leave a sufficient space
to allow the cover to rotate.
- rotate upwards and slide the cover towards the wall till the limit
To open the cover connections act as described below:
- press cover by releasing the hooks (B) that hold it in place pull it
towards you
- push it down.
In this way you have the full access to the taps and fittings.
A
4 -
IGNITION AND OPERATION
4.1
Preliminary checks
When the boiler is first started the siphon for collecting the
condensate is empty.
It is therefore necessary to create a head of water filling the siphon
before starting up, following these instructions:
- remove the siphon by releasing it from the plastic pipe connecting
to the combustion chamber
- fill the siphon about 3/4" full with water, making sure it is free of
any impurities
- check the float of the plastic cylinder
- put back the siphon, being careful not to empty it, and secure it
with the clip.
The plastic cylinder inside the siphon has the job of preventing
combustible gas coming out into the surroundings if the appliance is
started without first creating the head of water in the siphon.
Repeat this operation during routine and extraordinary maintenance
operations.
First ignition is carried out by competent personnel from an authorised
Technical Assistance Service Centre.
Before starting up the boiler, check:
a)
that the supply networks data (electric, water, gas) corresponds
to the label data
b)
that piping leaving the boiler is covered by thermal insulation
sheath
c)
that flue gas extraction and air suction pipes work correctly
d)
that conditions for regular maintenance are guaranteed if the
boiler is placed inside or between furniture
e)
the seal of the fuel adduction system
f)
that fuel capacity corresponds to values requested by the boiler
g)
the correct calibration of the gas valve and, if necessary, adjust
as indicated in paragraph 4.7 "Adjustments"
h)
that the fuel supply system is sized to provide the correct delivery
to the boiler, and that it has all the safety and control devices
prescribed by national and local regulations.
10
A
B
4.2
Appliance ignition
Each time the boiler is electrically powered the display shows a
series of information including the gas probe counter value (-C- XX)
(see section 4.4 - fault A09) and then the boiler begins an automatic
venting cycle that lasts about 2 minutes. During this phase the symbol
will appear on the display (fig. 25).
To interrupt the automatic venting cycle: access the electronic card
by removing the shell, turning the instrument panel upside down and
opening the electrical parts inspection cover. Subsequently:
- press the CO button (fig. 26).
Live electrical parts (230 Vac).
To start-up the boiler it is necessary to carry out the following
operations:
- electrically power the boiler
- unhook the connections cover as indicated in section 3.16
"Connections cover"
- open the gas tap to allow fuel flow
- set the ambient thermostat at the required temperature (~20°C)
- turn the mode selector to the desired position:
Winter
Turning the mode selector (fig. 27) within the area marked with "+"
and "-" the boiler provides domestic hot water and heating.
The boiler lights automatically in response to a heat request.
The digital monitor indicates the heating water temperature (fig. 28).
In the event of a request for domestic hot water.
The display indicates the domestic hot water temperature (fig. 29).
Adjusting the heating water temperature
To adjust the heating water temperature, turn the knob with the
symbol (fig. 27) clockwise to the area marked with "+" and "-".
Depending on the type of system, the most suitable temperature
range can be pre-selected:
- standard installations 40-80°C
- floor installations 20-45 °C.
For details see section 4.5.
Summer (R.S.I. model only if an external tank is connected)
Turning the selector to the
function of only domestic hot water is activated.
The boiler lights automatically in response to a request for domestic
hot water.
The digital monitor indicates the domestic hot water temperature
(fig.29).
Pre-heating (faster hot water) (only C.S.I. model)
Positioning the mode selector to summer or winter and turning the
domestic hot water temperature adjustment knob to the
(fig. 31) the pre-heating function is activated. Bring the domestic hot
water temperature adjustment knob back to the required position.
This function keeps the water in the domestic hot water exchanger
hot, to reduce standby times when a request is made.
The display indicates the outlet temperature of the heating water or
the domestic hot water based upon the request in progress.
During burner ignition following a pre-heating request, the monitor
indicates the
symbol.
To deactivate the pre-heating function, rotate the domestic hot water
temperature adjustment knob back to the symbol
Bring the domestic hot water temperature adjustment knob back to
the required position.
This function cannot be activated when the boiler is OFF: mode
selector (fig.32) on
OFF.
Adjusting the heating water temperature with an external probe
connected
When an external probe is installed, the delivery temperature
is automatically selected by the system, which quickly adjusts
the ambient temperature according to variations in the outside
temperature.
If you want to alter the temperature value (increasing or reducing
the value automatically calculated by the electronic card), use the
heating water temperature selector: turn it clockwise to increase the
temperature, or anticlockwise to reduce it.
The correction possibility is between 15 and 25 comfort levels which
are shown on the digital display by rotating the knob.
summer symbol (fig. 30) the traditional
.
symbol
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