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3.11
Filling the heating system (fig. 18-19-20)
Once the hydraulic connections have been carried out, fill the heating
system.
This operation must be carried out with a cold system, following these
instructions:
- open the lower automatic relief valve cap (A) by two or three turns
to allow continuous air venting and leave it open
- ensure that the cold water inlet tap is open
- open the filling tap (outside the boiler) until the pressure indicated
on the water gauge is between 1 bar and 1.5 bar
- re-close the filling tap.
NOTE
The deareation of the boiler takes place automatically by means of
the two automatic A and E bleed valves, the former positioned on
the circulator whereas the latter is positioned inside the air box. If
the deareation phase is difficult, operate as described in section 3.4.
3.12
Emptying the heating system
Before starting emptying, switch off the electricity supply by turning
off the main switch of the system.
- Close the heating system shut-off devices
- Slacken the discharge system valve by hand (D)
- The system's water is discharged through the discharge manifold (F).
b
The discharge manifold must be connected via a rubber pipe
to an appropriate collection and evacuation system in the white
water discharge drain in compliance with current regulations.
The outer diameter of the manifold is 20 mm: it is therefore
advisable to use a rubber pipe Ø18-19 mm closed with a
suitable clamp (not provided).
3.13
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
fig. 21
4 -
IGNITION AND OPERATION
4.1
Preliminary checks
b
Fig. 22-23: The first time you turn the boiler on and in case
of maintenance work, before using the appliance you must fill
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 floating
- water is flowing 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 correctly,
the condensation level will not exceed the maximum.
A
B
Filling the siphon before using the appliance, and the use of a safety
cut-off device inside the siphon, prevent exhaust gases from being
released into the environment.
Repeat during standard and non-standard maintenance work.
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.
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. 24).
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. 25).
b
Live electrical parts.
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 3.13
"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. 26) 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. 27).
In the event of a request for domestic hot water.
The display indicates the domestic hot water temperature (fig. 28).
Adjusting the heating water temperature
To adjust the heating water temperature, turn the knob with the
symbol (fig. 26) 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 (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. 28).
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.
MySMART R.S.I.
summer symbol (fig. 29) the traditional
9
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