10
drops below the activation temperature (minus hysteresis, e.g. 2
O
C). In this case, the
pump will stop at boiler temperature of 33
O
C.
.7. H.C.W. Pump Activation
With this function, you can set the temperature that will activate the hot consumption
water pump (the temperature is measured on the boiler). Above the setpoint
temperature (e.g. 40
O
C), the pump is activated and operates depending on the selected
operation mode. The pump will be deactivated when the boiler temperature drops below
the activation temperature (minus hysteresis, e.g. 3
O
C). In this case, the pump will
stop at boiler temperature of 37
O
C.
.8. Operation Mode
With this function, you can select one out of four operation modes.
.8.a) House Heating
If you select this option, the regulator will switch to the house heating mode. The central
heating pump starts to run above the pump activation temperature (set to 35
O
C by
default). Below this temperature (minus central heating hysteresis), the pump is shut
off. While in the house heating mode, the letter D is displayed in the bottom right corner
of the main screen.
.8.b) H.C.W. Priority
Activating the hot consumption water priority will cause the regulator to switch into the
water heater priority mode. In this mode, the (hot consumption water) heater pump is
activated until the set H.C.W. temperature is reached. Then, the H.C.W. pump is shut
off and the C.H. pump is activated. The central heating pump will run until the water
heater temperature drops below the setpoint value (and the H.C.W. hysteresis); then,
the C.H. pump is shut off and the H.C.W. pump is activated.
In this mode, the fan is operated as long as the temperature is below 62°C to prevent
the boiler from overheating.
The hot consumption water priority function consists in that the consumption water is
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