13Subject to technical amendments without prior notice | 83055800gUK – Translation of the original operating manual | ait-deutschland GmbH
10 Settingtheoverowvalve
NOTE
● The activities in this section are only neces-
sary for integration of the storage tank in series
● Complete the work steps quickly, otherwise
the maximum return temperature could be
exceeded and the heat pump will switch to
high-pressure fault
● Turn the rotary-push button on the overow
valve to the right to increase the temperature
dierence(thespread),turnittothelefttore-
duce it
Thesystemisrunninginheatingmode(ideallyin
cold condition).
If the storage tank is integrated in series, the IBN – as-
sistantallowsyoutoadjusttheoverowvalveaccord-
ing to to the hydraulic system.
ConrmtheIBN–assistantor:
The “Set bypass valve” menu item is set by default to
“No”.Theoverowvalveadjustmentfunctionisdeac-
tivated.
● The UWP control signal is the indication of the
currently required pump capacity as a %
● Theactualowrateisthecurrentowrate(meas-
uring accuracy +/- 200 l/h)
1. Fully open the overow valve, close the heating
circuits.
2. If the “Set bypass valve” menu item is set from
“No” to “Yes”, the circulation pump is activated to
100% – and the pump starts up.
3. If the control signal UWP reaches 100%, close
theoverowvalvetotheextentthatthemaximum
ow rate ( “Technical data / scope of supply”,
page 16) can be ensured.
1 Rotary-push button
2 Overowvalve
4. If you exit the “Set bypass valve” menu or at the
latest after one hour, the circulation pump switch-
es back to standard regulation.
5. Open valves to heating circuit.