Automatic Night Setback - evenes He-HS 35 Serie Mode D'emploi

pump SettingS and DElIvERy RatE
Proportional pressure control
during operation the pump is running according to the proportional pres-
sure curve set the differential pressure is controlled through the pump
depending on the delivery current the proportional pressure characteris-
tics are named pd1 to pd4 in the corresponding Q/H diagrams
Constant speed control
the constant speed control characteristics are named i to iii in the Q/H
diagrams When selecting constant speed control the pump speed does
not change over the entire cycle
Requirements for automatic night setback
pumps installed in gas water heaters which only contain a small amount of
water must not be set to night setback
Note: if the heating system does not deliver sufficient
water to the radiators, please check whether the auto-
matic night setback is activated if necessary, switch off the
night setback
the following requirements must be fulfilled to ensure proper working of
the night setback:
1 the pump must be installed in the advance flow
2 the heating system must be equipped with an automatic
advance flow temperature control
24 eVeneS Heating pump He-HS