Samson TROVIS 5575 - Parallel Pump Operation; Circulation Pump Operation During Storage Tank Charging; Priority Operation

6.6 Parallel pump operation
This function is only available 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 cur
-
rent flow temperature demand of the pump circuit is lower than the adjusted
Flow limit tem
-
perature 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 acti
-
vated and the time for
Stop parallel operation in case of deviation has elapsed, system devi
-
ations greater than 5 °C cause the controller to suspend parallel operation for 10 minutes
and to apply priority operation. Setting the
Stop parallel operation in case of deviation to 0
minutes leads to a parallel operation once initiated remaining regardless of a deviation.
Function
WE Configuration
Parallel pump operation 0
10 min
40 °C
CO4 -> F06 - 1
Stop parallel operation in case of deviation / 0 to 10 min
Flow limit temperature for parallel pump operation /
20 to 90 °C
6.7 Circulation pump operation during storage tank charging
With the setting CO4 -> F11 - 1, the circulation pump continues operation according to the
set schedule even during storage tank charging.
With the setting CO4 -> F11 - 0, the circulation pump is switched off as soon as the storage
tank charging pump is activated. The circulation pump returns to operate according to
schedule when the storage tank charging pump has been switched off again.
Function
WE Configuration
Circulation pump operation
during storage tank charging
0 CO4 -> F11
6.8 Priority operation
In many district heating systems with primary DHW heating, the allotted amount of water is
only intended to supply the heating system. As a result, the capacity required for DHW heat
-
ing needs to be taken from the heating system when great heating loads occur; and this, until
DHW heating has been concluded.
Nevertheless, heating operation is not to be interrupted simply. Only the amount of energy
required for DHW heating is to be deducted. This can be achieved by using the priority func
-
tions Reverse control and Set-back operation.
70 EB 5575 EN
Appendix