Evolution EV HFC
16
8.2
Functioning with a Sanit hot water tank
The
Evolution EV HFC
boiler may be installed together with a hot water tank from the
DOMUSA
TEKNIK
Sanit
range, to obtain domestic hot water. For correct installation of the tank, carefully
follow the instructions given in the “Installation Instructions” section of this manual.
In this mode, select the desired DHW setpoint temperature (see "
Selecting the DHW setpoint
temperature
"). The burner and the DHW pump will switch on. When the hot water tank reaches the
selected DHW setpoint temperature, it is ready to heat up the heating installation if it is enabled,
starting up the heating pump and switching off the DHW pump. The burner will shut down when
the boiler reaches its selected setpoint temperature. The heating pump will stop when the room
temperature reaches or exceeds the temperature set on the installation’s room thermostat (if it has
one).
If you wish, you may totally disable the domestic hot water production function by selecting "
OFF
"
as the DHW setpoint temperature.
8.3
Heating circuit 2 functioning (Optional)
All the models in the
Evolution EV HFC
range of boilers have the option of controlling a second
heating circuit. This requires the installation of a second circulation pump on the boiler. To correctly
install this pump, carefully follow the instructions given in the “Installing heating circuit 2” section
of this manual.
Heating circuit 2 will work with the selected boiler setpoint temperature (see “
Selecting the boiler
setpoint temperature
” ) and the temperature of room thermostat 2 (
TA2
) (if the boiler has one). The
burner and the heating pump of circuit 2 (
BC
2
) will begin to function until the installation reaches
the selected boiler setpoint temperature (or the temperature on room thermostat 2, if the unit has
one). When the temperature of the installation drops below the selected boiler temperature, the
burner will start up again, running the heating cycle.
NOTE: When the heating function is disabled, if OFF is selected circuit 2 will also be disabled.
8.4
Functioning with an SRFC2/EV Underfloor Heating Kit (Optional)
The
Evolution EV HFC
boiler may be used with an SRFC2/EV Underfloor Heating Kit (fitted to
heating circuit 1). This kit basically consists of a motorised 3-way mixing valve, a circulation pump
and an underfloor heating installation flow temperature sensor. For correct hydraulic installation,
carefully follow the assembly and connection instructions enclosed with the kit.
The underfloor heating installation is worked by the electronic boiler control. The installation flow
sensor is used to adjust the temperature, selecting the installation flow setpoint temperature using
the boiler setpoint adjustment touch button on the control panel, between OFF, 0 and 45 ºC (see
“
Selecting the Underfloor Heating flow setpoint temperature
”). In this operating mode, the
electronic control sets the boiler setpoint temperature to 75ºC by default, and the installation flow
temperature can be adjusted to the selected setpoint temperature using the mixing valve.
The boiler setpoint temperature can be changed 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.
If you wish, the SRFC2/EV Underfloor Heating circuit function can be totally disabled, by selecting
""
OFF
" as the installation flow setpoint temperature.
NOTE:
When the Underfloor Heating circuit function is disabled by selecting OFF as the
setpoint temperature, only circuit 1 will be disabled. Circuit 2 will continue to function.
Summary of Contents for EVOLUTION EV 20 HFC
Page 1: ...INSTALLATION AND OPERATING INSTRUCTIONS EVOLUTION EV HFC ...
Page 44: ...Evolution EV HFC 42 NOTES ...
Page 45: ...43 NOTES ...
Page 46: ...Evolution EV HFC 44 NOTES ...
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