CTC Union EcoZenith i555 Pro 1x230V, Installation And Maintenance Manual

Page: 75 / 168

75
CTC EcoZenith i555 Pro
dT setpoint low °C 7 (2...50)
Setting for the number of degrees by which the lower
tank of the EcoZenith must exceed its reference value
to start transfer to the external buffer tank. This setting
applies to charging of solar energy when a heating need
is present on the heating circuit.
HP charging On (On/Off)
Setting for heat pump charging of the external buffer
tank via remote control ("On"/”Off").
This menu bar is displayed if both of the criteria below
are met:
• a remote control input has been defined for the
"HP charging" function.
• a normal mode (Normally Open (NO) or Normally
Closed (NC)) for the external control signal has
been defined.
Read more in the "Def. Remote Control" section of the
"Installer / Define” chapter.
HP charging schedule
Charging an external buffer tank with heat from a heat
pump is mainly of relevance when there are different
tariffs for electricity over a 24 hour period. In such an
instance, the buffer tank(s) can be charged when the
tariff is low. The lower tank of the EcoZenith will work
towards the set temperature during those periods which
are scheduled and then transfer heated radiator water
to the buffer tank(s), provided that the latter has/have a
lower temperature.
This menu bar is displayed if a "Schedule" is defined
for the "HP charging" function in the "Installer/Define/
Remote Control" menu.
For more information, refer to:
• chapter "Weekly Program" for schedule setting.
• section "Def. Remote Control" of the
"Installer / Define” chapter for defining the remote
control function.