Technical data

Ichill 200CX EVO rev 1.1 14/11/2013
Pag. 84 of 151
the solar panel are enabled to work (valve is open and water pump on); heating probe is defined by FS58
parameter (it is possible to set another probe, if needed).
Compressors are normally managed by heating regulation.
• Solar panel in Heating (FS56=2)
If:
solar panel temperature – heating temperature > FS60 (Dt to enable solar panel in heating)
the solar panel are enabled to work; heating probe is defined by FS58 parameter (it is possible to set another
probe, if needed).
At first compressors are not used for heating.
It is possible to set a maximum time to use solar panel (FS61); when this time is elapsed and sanitary set
point is not reached, the solar panel are disabled and compressors are switched on.
In regulation, if
solar panel temperature – heating temperature < FS60
the solar panel are disabled and the heating is done by compressors.
Dt control is done only at the time of the request of heating; if Dt< FS60 the solar panel are not used and
compressors are used for heating.
42. UNIT WITH HYBRID EXCHANGERS (AIR / WATER UNIT)
The parameter CF75=1 enables this function.
This unit manages two exchangers by relay:
- Hybrid exchanger 1
- Hybrid exchanger 2
Setting the parameter CF75=1 hybrid exchangers are enabled; through the parameter dF35 is possible to
select witch probe is used for the regulation (external temperature or condenser temperature/pressure).
If external temperature is selected, hybrid exchangers regulation of both circuits works in parallel.
If condenser temperature/pressure is selected:
• common condenser: the regulation is done according the higher value of pressure/temperature of the
circuits in summer and the lower value in winter
• separated condenser: every exchanger is managed accordind the temperature/pressure of the
specific circuit
Parametres involved:
-
- Hybrid exchangers set point 1 in chiller (parameter dF27)
- Hybrid exchangers set point 1 in chiller (parameter dF29)
- Hybrid exchangers set point 2 in chiller (parameter dF28)
- Hybrid exchangers set point 2 in chiller (parameter dF30)
- Hybrid exchangers set point 1 in heat pump (parameter dF31)
- Hybrid exchangers set point 1 in heat pump (parameter dF33)
- Hybrid exchangers set point 2 in heat pump (parameter dF32)
- Hybrid exchangers set point 2 in heat pump (parameter dF34)
Summer operation mode: