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9 ADITIONAL FUNCTIONS
The boiler Evolution EV FDX is equipped with an electronic control able to regulate the
automatic operation of the boiler in an efficient way and it also includes the following aditional
control features:
9.1 Pumps anti-block function
This feature prevents the blocking of the circulation pumps of the boiler, due to prolonged
periods that the pumps don't work. This system will remain enable while the boiler is
onnected to the electric network.
9.2 Boiler anti-freezing function
This feature protects the boiler of freezing during the freeze periods. When the temperature
of the boiler decreases up to 6 ºC, it will start the heating circulation pump. If the temperature
of boiler continues descending up to 4 ºC, it will put into operation the burner, heating the
installation. Once enabled this feature, will be active until reaching 8 ºC in the boiler. This
system will remain in alert while the boiler is connected to the electric network.
9.3 Boiler pressure sensorize function
This feature prevents of a bad operation of the boiler because a low level of water and an
excess of pressure in the boiler. The pressure is sensed by a sensor of pressure (11), and its
value is visualized in the digital display of the main board. When the pressure is lower than
0.5 bar, the electronic control stops the operation of the boiler and enables an alarm in the
screen. When the pressure of the boiler is upper than 2.5 bar, it lights on an intermittent neon
of alarms (20), warning of the excess of pressure. It is recommended, in this case, to call to
Technical Assistance Service, and proceed to drain the boiler a little.
9.4 Phone relay connection
The boiler Evolution is prepared with the possibility of connecting a phone relay for switch
on and switch off the boiler. This feature allows remote shutdown and light on the boiler, from
any place, with a phone call. The connection of the relay to the boiler realizes connecting it in
the terminal strip J6 (see Electrical Connection Diagram). When the phone relay is close, the
boiler starts, and when the relay is open, the boiler will shutdown, remainding the anti-freeze
protection and anti-block of pumps functions activated.
9.5 Room thermostat connection
The boiler has two terminals, in the terminal strip J5, prepared for the connection of a room
thermostat or room timer (see Electrical Connection Diagram), which allow to control the
heating service depending on the temperature of home. For its connection, it should take off
the bridge of the terminals J5 and connect the room thermostat there.
The installation of a room thermostat will optimize the operation of the installation, adjusting
the operation of the heating to the requirements of home, and obtaining some enhanced
benefits of comfort. Also, if the thermostat allows the programming of the hours of operation
(room timer), it will be able to adjust the heating system schedule to the usage of the
installation.
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