11
5 FILLING THE INSTALLATION
A fill valve for filling the installation is to be provided for. The installation should be filled up using this
valve until a pressure of 1 - 1.5 bar appears on the left side of the digital display. Filling is to be done
slowly and with the cap of the automatic air drain valve
(7)
loose, so that the air is released from the
installation. The rest of the installation is also to be suitably drained using the air drain valves fitted for
this purpose. Once the installation has been filled, close the filling valve.
Evolution boilers incorporate a pressure sensor
(5)
, which controls the pressure of the installation. If
the installation drops below the minimum pressure of 0.5 bar, the boiler will not switch on and a low
pressure alarm will appear on the display ("AP").
NOTE: Switching on the boiler with no water inside could result in serious damage.
6 DIGITAL DISPLAY
The Evolution boiler is electronic and incorporates a digital display
(13)
showing the actual
temperatures, the set point temperatures and the pressure of the installation. When the display is on
standby, the pressure is indicated on the left side of the display (in bars), and the actual temperature of
the boiler on the right of the display (in ºC). By pressing the set button underneath the display, the rest
of the available display options can be browsed, as follows:
Set button
Digital display
1.5
Press the set button successively to select the different display options. When the desired option
has been selected, it will return to standby after ten seconds have elapsed.
The following table shows the different display options:
1.5 63
bar ºC
Standby. The pressure is shown on the left, and the actual boiler
temperature on the right.
T 1 63
Actual boiler temperature.
T2 45
Actual hot water temperature (with storage heater).
T3 35
Actual flow temperature of the underfloor heating installation.
(option SRAC2/EV only)
TC 70
Boiler temperature selected using the corresponding dial
(16)
.
A( 45
Hot water temperature selected using the corresponding dial
(20)
(with storage heater).
TR 35
Set point flow temperature for the underfloor heating installation
selected using the corresponding dial
(16)
.
(option SRAC2/EV only)
SP 1.5
Actual boiler pressure, measured by the Pressure Sensor
(5)
.
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