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3.2018
8.2 Additional Source
For the functioning of the backup source, the following must be done correctly:
Choosing the type of backup source,
Choosing the operation mode of the external source,
Making an electrical connection between the external source and
If needed, connecting the temperature probe of the external source.
The backup source can be triggered automatically by the air temperature outside the
operating range of the device
’s generator or possible malfunction of the device’s generator or
by choosing the differential operation of the backup source or the backup source can be
triggered manually by choosing the operation among the basic operation programmes or the
schedule or by the external signal. Heating with the additional source can also be triggered
when the combined programmes
“Quick water heating”, “Comfort plus” and “Automatic quick
water heating
” are activated.
8.2.1 Correct choice of the additional source
For correct operation of the additional source it is necessary to choose a backup source to
heat the water (chapter 7.3.15.2). The factory choice
is an electric heater
built into the
device.
In case of using
the external heating source,
it is necessary to choose the fire icon or the
fire with heater icon (
or
).
8.2.2 Choosing the correct operation mode of the external source
In case of choosing an external heating source as additional source, it is necessary to
determine how the external source will operate
(chapter 7.3.15.8).
8.2.2.1 The device's generator priority (additional external electric heater, furnace
oil/gas/pellet/wood biomass ...)
The operation mode of the external source with the device's generator priority is
used in cases when the external source is always available. These methods of
heating are the additional external electric heater, furnace oil/gas/pellet/wood
biomass ... This kind of operation mode means the controller in its basic mode will
always use the primary source (the device's generator) for heating DHW. The external
heating source will be used only when the air temperature is outside the operating range or if
the device's generator is out of order.
Heating only with the external source can be chosen manually with the basic programme
"Additional source
« with a set schedule or a set external signal. It can also be used
together with the combined programmes "Quick Water Heating
«, »Automatic quick water
heating« and »Comfort plus
(only electric heater
) «.
Installing an additional temperature sensor for the external source is not obligatory, but it is
preferred. Not using the sensor can result in the external source not being warm enough and
the cooling of the heat pump boiler.
To turn on the external source temperature verification, your authorized installer must
activate the parameter in the service menu.
Operation of the external source temperature verification with the device's generator
as priority:
When the need for the external source arises, the device turns it on via the electric signal
(turning on the external source's circulation pump at the same time). Checking the operation
of the external source is performed by comparing the temperature of the external source with
the temperature of the heat pump boiler. When the temperature of the external source is at
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