Beretta Mynute Green E 30 R.S.I. Manual Para El Instalador Y El Usuario página 4

ENGLISH
- microprocessor card to control inputs, outputs and alarm manage-
ment
- continuous electronic flame modulation for domestic hot water and
heating
- electronic ignition with flame ionisation control
- fan controlled by Hall-effect revolutions counter
- built-in gas pressure stabiliser
- NTC probe to control delivery temperature of the primary circuit
- NTC probe to control return temperature of the primary circuit
- dual device for separation and automatic purging of air
- automatic heating circuit by-pass
- 3-way valve with electric actuator
- expansion tank
- low consumption modulating circulator
- manual loading of the heating circuit
- water pressure switch
- hydrometer to visualise heating water pressure
- circulator anti-blocking device
- airtight combustion chamber
- electrically operated gas valve with dual shutter to command the
burner
- self-diagnostics for signalling the cleaning of the primary circuit
heat exchanger.
The safety devices of the appliance are:
- a water limit thermostat, to check for any overheating of the appli-
ance and thereby ensure the 100% safety of the system. To restore
operation if a limit thermostat has been triggered, set the function
selector to OFF/RESET and then return it to the desired position
- flue gas probe: this intervenes (putting the boiler in safety stop
mode) if the temperature of the combustion products exceeds the
maximum operating temperature of the discharge pipes
- 3 bar safety valve on the heating circuit
- a microprocessor check of probe continuity, with any faults indicat-
ed on the display
- a syphon with float, for discharging the condensate and preventing
the leakage of flue gases
- a condensate level sensor that operates by blocking the boiler if
the level of condensate in the heat exchanger exceeds the allowed
limit
- first level anti-freeze function (suitable for indoor installations)
which also operates with the boiler in standby and which is activat-
ed when the water temperature falls below 6°C
- diagnosis for absence of circulation (via the display of the temper-
atures read by the delivery and return probes)
- diagnosis for absence of water (via the water pressure switch)
- a flue gas safety evacuation system incorporated in the pneumatic
operation of the gas valve
- diagnosis for overtemperature on both the delivery and return
lines, with dual probe - limit temperature 95°C -
- high modulation, the boiler can automatically modulate the output
power in a maximum and minimum range (see technical data)
The boiler is installation ready for the following:
- a safety thermostat for reduced temperature systems
- an ambient thermostat or hourly timer
- connection to remote control with related alarm signalling
- external sensor
- water tank
4
3 - INSTALLATION
3.1 Installation regulations
Installation must be carried out by qualified personnel in compliance
with local regulations.
POSITION
The boiler has protection that guarantees correct operation with a
temperature range from 0°C to 60°C.
To take advantage of protective devices, the appliance must be able
to start up, since any lockout condition (for example, absence of gas
or electrical supply, or safety operation) deactivates the protective
devices. If the machine is left powered down for long periods in areas
where temperatures may fall below 0°C, and you do not want to drain
the heating system, you are advised to add a good quality antifreeze
liquid to the primary circuit to protect it from freezing. Carefully follow
the manufacturer's instructions with regards not only the percentage of
antifreeze liquid to be used for the minimum temperature at which you
want to keep the machine circuit, but also the duration and disposal of
the liquid itself. For the domestic hot water part, we recommend you
drain the circuit.
The boiler component materials are resistant to ethylene glycol
based antifreeze liquids.
MINIMUM DISTANCES
In order to have access to the boiler to perform regular maintenance
operations, respect the minimum spaces foreseen for installation
(fig. 1).
For correct appliance positioning:
- do not place it on a cooker or other cooking device
- do not leave inflammable products in the room where the boiler is
installed
- heat sensitive walls (for example, wooden walls) must be protected
with proper insulation.
IMPORTANT
Before installation, wash every system piping carefully in order to
remove any residues that may impair the operation of the appliance.
Connect the discharge manifold to a suitable discharge system (for
details, refer to chapter 3.6). The domestic hot water circuit does not
need a safety valve, but make sure that the pressure of waterworks
does not exceed 6 bar. In case of doubts, install a pressure reducer.
Prior to ignition, make sure that the boiler is designed to operate with
the gas available; this can be checked by the wording on the packag-
ing and by the adhesive label indicating the gas type.
It is very important to highlight that in some cases the smoke pipes
are under pressure and therefore, the connections of several ele-
ments must be airtight.
3.2 Cleaning the system / characteristics of the heating
circuit water
In the case of a new installation or replacement of the boiler, it is
necessary to clean the heating system.
To ensure the device works well, top up the additives and/or chemical
treatments (e.g. anti-freeze liquids, filming agents, etc.) and check
the parameters in the table are within the values indicated.
Parameters Um
PH value
Hardness ° F
Appearance
Heating
Filling water
circuit water
7~8 -
- 15~20
- clear