Beretta Mynute LOW NOx 24 C.S.I. Installer And User Manual page 8

ENGLISH
Do not clean the appliance or its parts with inflammable substanc-
es (e.g. petrol, alcohol, etc.).
Do not clean panels, painted parts and plastic parts with paint thinner.
Panel cleaning must be carried out only with soapy water.
5.1 Check the combustion parameters
- power the boiler.
To carry out the combustion analysis, proceed as follows:
- open the hot water tap to its maximum output
- set the mode selector to summer
temperature selector to the maximum value (fig. 12a).
- remove the screw of the combustion analysis inlet cover (fig. 24)
and insert the probes
- power the boiler
The appliance works at maximum output and it is possible to check
combustion.
After analysis is complete:
- close the hot water tap
- remove the probe from the analyser and close the combustion
analysis inlet fastening carefully the screw previously removed.
USER
1A GENERAL WARNINGS
The instruction manual is an integral part of the product and it must
therefore be kept carefully and must accompany the appliance; if
the manual is lost or damaged, another copy must be requested
from the Technical Assistance Service.
Boiler installation and any other assistance and maintenance
operation must be carried out by qualified personnel accord-
ing to current local and national regulations.
For installation, it is advisable to contact specialised personnel.
The boiler must only be used for the application foreseen by
the manufacturer. The manufacturer shall not be liable for
any damage to persons, animals or property due to errors in
installation, calibration, maintenance or due to improper use.
The safety and automatic adjustment devices must not be
modified, during the system life cycle, by the manufacturer or
supplier.
This appliance produces hot water, therefore it must be con-
nected to a heating system and/or a domestic hot water
mains, compatible with its performance and output.
In case of water leakage, close the water supply and contact
the Technical Assistance Service immediately.
In case of absence for long periods time, close the gas sup-
ply and switch off the electrical supply main switch. In case of
risk of frost, empty the boiler.
From time to time check that the operating pressure of the
hydraulic system does not decrease under 1 bar.
In case of failure and/or malfunctioning, deactivate the appli-
ance, and do not try to repair or intervene directly on it.
Appliance maintenance must be carried out at least once a
year: program it with the Technical Assistance Service will
avoid wasting time and money.
Boiler use requires to strictly observe some basic safety rules:
Do not use the appliance in any manner other than its in-
tended purpose.
It is dangerous to touch the appliance with wet or damp body
parts and/or in bare feet.
Under no circumstances cover the intake grids, dissipation
grids and ventilation vents in the installation room with cloths,
paper or any other material.
Do not activate electrical switches, telephone or any other
object that causes sparks if there is a smell of gas. Ventilate
the room by opening doors and windows and close the gas
central tap.
8
and the domestic hot water
Do not place anything in the boiler.
Do not perform any cleaning operation if the appliance is not
disconnected from the main power supply.
Do not cover or reduce ventilation opening of the room where
the generator is installed.
Do not leave containers and inflammable products in the in-
stallation room.
Do not attempt to repair the appliance in case of failure and/
or malfunctioning.
It is dangerous to pull or twist the electric cables.
Children or unskilled persons must not use the appliance.
Do not intervene on sealed elements.
For better use, remember that:
- a periodic external cleaning with soapy water not only improves
its aesthetic aspect but also preserves panelling from corrosion,
extending its life cycle;
- if the wall-mounted boiler is enclosed in pendant furniture, leave
at least 5 cm for ventilation and maintenance;
- installation of an room thermostat will favour a greater comfort, a
more rational use of the heat and energy saving; the boiler can
also be connected to a programming clock in order to manage
ignition and switching off during the day or week.
2A IGNITION
First ignition must be carried out by personnel from the Technical
Assistance Service. At the same time, if it is necessary to put the
appliance in service again, carefully follow the described operations.
To start-up the boiler it is necessary to carry out the following op-
erations:
- power the boiler
- open the gas tap present in the system to allow fuel flow
- turn the mode selector (1 - fig. 1a) to the desired position:
Summer mode: turning the selector to the symbol summer
(fig. 2a) the traditional function of only domestic hot water is acti-
vated. If there is a domestic hot water request the digital display
shows the hot water system temperature, the icon to indicate the
hot water supply and the flame icon
Winter mode: by turning the mode selector within the area
marked + and - (fig. 3a), the boiler provides domestic hot water
and heating. If there is a heat request, the boiler switches on
and the digital monitor indicates the heating water temperature,
the icon to indicate heating and the flame icon (fig. 4a). If there
is a domestic hot water request, the boiler switches on and the
digital display shows the hot water system temperature, the icon
to indicate the hot water supply and the flame icon (fig. 5a)
Pre-heating (faster hot water): rotate the domestic hot water
temperature adjustment knob to the
vate the pre-heating function. This function keeps the water in the
domestic hot water exchanger hot, to reduce standby times when
a request is made. When the pre-heating function is enabled, the
monitor indicates the delivery temperature of the heating water
or the domestic hot water, according to the current request. During
burner ignition following a pre-heating request, the monitor indicates
the symbol (fig. 7a). 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: function selector (8a) on
Adjustment of central heating temperature
To adjust central heating temperature, turn the knob
se within the area marked + and - (fig. 3a)
symbol (fig. 6a), to acti-
OFF.
clockwi-