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5
DESCRIPTION OF THE APPLIANCE
5.1
Characteristics
GO BF
are last generation low temperature wall mounted boilers
which Sime has produced for heating and domestic hot water
production. The main design choices made by Sime for the GO
boilers are:
BF
– the atmospheric burner combined with a copper heat
exchanger for heating and a rapid heat exchanger for DHW
– the sealed combustion chamber which can be classified
"Type C" or "Type B" in relation to the room where the boiler
is installed, depending on the smoke outlet configuration
adopted during installation
– the microprocessor electronic control board, which makes
the heating and domestic hot water production system
easier to manage and offers the option to be connected to
room thermostats or to a remote control (with Open Therm
protocol) and also to an external sensor. Where connected
to an external sensor, the boiler temperature varies on the
basis of the external temperature, according to the selected
optimal climatic curve. This provides significant energy and
cost savings.
Other special features of the GO BF boilers are:
– DHW anti-freeze function that comes on automatically if
the temperature detected by the DHW sensor falls below
4°C. The circulation pump and the burner start up. When
the temperature reaches 35°C the burner goes off and the
circulation pump stays on for ~ 150 s (post circulation), after
which the anti-freeze function stops
– central heating anti-freeze function that comes on
automatically at two levels:
- if the temperature detected by the delivery sensor falls below
7°C only the circulation pump comes on. If the temperature
reaches 10°C, the anti-freeze function stops
- if, on the other hand, rather than rising, the temperature falls
below 5°C, the burner also starts up. When the temperature
reaches 42°C the burner goes off and the circulation pump
stays on for ~ 150 s (post circulation), after which the anti-
freeze function stops
– the anti-blocking function of the pump and diverter valve, this
activates automatically every 24 hours if no request for heat
has been made
– the chimney sweep function lasts 15 minutes and makes the
job of the qualified technician easier when measuring the
parameters and combustion efficiency and when checking
gas pressure at the nozzles
– screen display of the operating and self-diagnostic
parameters with error code display when the fault occurs.
This makes repair interventions easier and allows appliance
operation to be restored correctly.
5.2
Check and safety devices
The GO BF boilers are equipped with the following check and
safety devices:
– thermal safety thermostat 100°C
– 3 bar relief valve
– heating water pressure switch
– delivery sensor
– DHW sensor
– air pressure switch.
d
IT IS FORBIDDEN
to commission the appliance with safety devices which
do not work or which have been tampered with.
52
a
WARNING
Safety device may only be replaced by professional
qualified personnel using Sime original spare parts.
5.3
Identification
The GO BF boilers can be identified by means of:
this is located on the outside of the
1
Packaging label:
packaging and provides a code, the serial number of the
boiler and the bar code
2
Technical Data Plate:
this is located on the side of the appliance
and provides the technical data, appliance performance
information and any other information required by law in the
country where the appliance will be used.
1
GO ... BF
2
m
CAUTION
Tampering with, removing or failing to display the
identification plate or carrying out any other operation
which does not allow safe identification of the product
or which may hinder installation and maintenance
operations.
EN
1
2
Fig. 16
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