Conventional heating installation (direct circuit)
The maximum temperature, an operating curve for heating circuit 1 (see instructions
enclosed with the E20 remote control) and the desired heating times and room
temperatures can all be selected on the remote control. The E20 remote control
calculates the required boiler temperature at each particular time, depending on the
temperature inside the home and the outside weather conditions, in accordance with the
operating curve selected (setting HEATSLOPE 1 on the E20), switching the heating on and
off in accordance with the heating times and the room temperatures programmed.
Heating installation with an SRHFC2/EV underfloor heating kit (mixed circuit)
If the boiler has an SRHFC2/EV underfloor heating kit installed on circuit 1 and the control
of this kit is activated on the E20 remote control using the HEATSLOPE 2 setting (see
instructions enclosed with the E20 remote control), the adjustment and control of the
underfloor heating circuit flow temperature will be performed by the remote control. The
E20 will calculate the required flow temperature at each particular time, depending on
the temperature inside the home and the outside weather conditions, in accordance with
the operating curve selected (the HEATSLOPE 2 setting on the E20 remote control). For
mixed underfloor heating circuits, we recommend selecting operating curves of less than
0.8.
The boiler setpoint temperature will be fixed at 75ºC and can be changed using the boiler
control panel. This setpoint temperature can be changed by using the MODE touch
button to browse to the "boiler temperature setpoint" display option. When the display
shows this option, touch the "+ /-" symbols to select the desired temperature.
The E20 remote control can also be used to select the maximum flow temperature for
heating circuit 1 and to programme the desired heating times and room temperature. The
E20 remote control will switch the heating function of this circuit on and off in accordance
with the heating times and room temperatures programmed.
NOTE: For mixed underfloor heating circuits, we recommend selecting a maximum flow
temperature NO HIGHER THAN 45 ºC, to protect the underfloor heating installation
from overheating.
11.3.- Functioning with a DHW tank (Optional)
When the boiler is installed with a DHW production tank connected, the E20 remote control
can be used to select up to two DHW temperatures and the desired DHW production times.
The E20 remote control regulates the DHW tank temperature at each particular time, and
enables or disables the DHW function according to the times scheduled.
The E20 remote control also has an option for enabling a function to protect against
legionella bacteria (see instructions enclosed with the E20 remote control).
11.4.- Telephone relay function
The E20 remote control is designed for connection to an external telephone relay. If a
telephone relay is connected to the E20 remote control, the heating mode of heating circuit
1 and the DHW mode can be switched on and off from anywhere in the world, simply by
making a telephone call (see instructions enclosed with the E20 remote control).
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