Dhw Heating With Solar System; Intermediate Heating Operation; Parallel Pump Operation - Samson TROVIS 5573 Mounting And Operating Instructions

6.4

DHW heating with solar system

The systems Anl 1.3 and 2.3 include a solar system for DHW heating. In these systems, the dif-
ference between the temperatures measured at storage sensor SF3 and the sensor at the solar
collector VF3 is determined. The Solar pump ON parameter determines the minimum tempera-
ture difference between sensors VF3 and SF3 required to activate the solar pump. If the temper-
ature difference falls below the value of Solar pump OFF, the solar pump is switched off. Ba-
sically, the solar pump is also switched off when the water temperature measured at sensor SF3
has reached the Max. storage tank temperature .
Note: The times-of-use of the DHW circuit do not affect the operation of the solar system.
After the key number 1999 has been set, the operating hours of the solar pump are displayed in
extended information level.
Parameters
Solar pump ON
Solar pump OFF
Max. storage tank temperature
6.5

Intermediate heating operation

This function can only be activated in systems Anl 2.x, 4.1 and 4.5. With the setting
CO4 -> F07 - 1, heating operation of the UP1 heating circuit is reactivated for a period of 10
minutes after 20 minutes of priority (heating deactivated during DHW heating). By setting
CO4 -> F07 - 0, storage tank charging is given unlimited priority over the heating operation in
the UP1 heating circuit.
Function
Intermediate heating
6.6

Parallel pump operation

This function can only be activated in systems Anl 2.1 to 2.3, 4.1 and 4.5. With the setting
CO4 -> F06 - 1, the circulation pump UP1 remains switched on during DHW heating unless
certain operating situations occur. These situations include, for example, those when the current
flow temperature demand of the pump circuit is lower than the adjusted Flow limit temperature
for parallel pump operation . In this case, the controller applies priority operation, if necessary
with intermediate heating. Once a parallel pump operation cycle has been activated and the
WE Parameter level / Range of values
10.0 °C PA4 / 1.0 to 30.0 °C
3.0 °C PA4 / 0.0 to 30.0 °C
80.0 °C PA4 / 20.0 to 90.0 °C
WE Configuration
1 CO4 -> F07 - 1
Functions of the DHW circuit
EB 5573 EN
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