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Note that connection of the sensor is optional. When it is not mounted,
circulation pump works continuously according to circulation schedule.
If the sensor is mounted, circulation pump also works according to circulation
schedule but only until the temperature in the circulation stabilizes.
At certain time intervals circulation temperature is verified. If water temperature
needs to be raised, the pump is activated.
When the sensor is not mounted, the pump works continuously. When the sensor is
mounted, the pump works when temperature in circulation declines. Control system
automatically detects the presence of the sensor and adjusts accordingly circulation
pump control algorithm.
Master appliance (entry NA)
In order to limit the electricity used, it is possible to make the work of devices conditional
from other external controllers. In this case, the break contact needs to be connected
to NA entry so that switching on electricity master appliance will result in opening the
contact, which will block the heating.
Function entry (entry FN)
Entry of switching on heating regardless of the schedule. In order to use this function
the break contact needs to be connected to NA entry. Contraction of FN entry will result
in turning on heating with all available sources (heat pump, coil heater, external heat
source) to setting 60°C.
Exit ZC
It is a relay output for controlling an external heat source. It is active only if option
“Additional heat source” was switched on in setup.
Connection of external control appliances
Circulation temperature
sensor (Tcrk)
(additional
component - WE sensor 019/01)
Location of mounting the sensor
is shown in the hydraulic system
diagram. Cable connection of
the sensor should be as short as
possible, shouldn’t be led close to
power cords or wrapped around
other wires.
FN
NA
Tcrk
ZC
SG
NO COM NC NO COM NC
Tcrk
FN
FN
Under no circumstances should any voltage be connected to these terminals
(SG, ZC, NA, FN, TCRK), as this will result in the damage of boiler’s controller.
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