IC200CX EVO
user manual
40
11.2 Compressors management during domestic hot water production
The regulation takes place on the set point for the production of domestic hot water (DHW) and with
a proportional band that can be set by parameter (grouping of parameters FS); with the domestic hot
water function active, the led of the domestic hot water mode and the led of the working
mode (cooling or heating) are displayed.
Compressor regulator diagram in DHW mode
•
FS03
Set point DHW, also accessible by key ,
SetS
•
FS04
DHW proportional band
All’abbassarsi della temperatura dell’acqua sanitaria l’accensione dei compressori avviene in modo
proporzionale rispetto al set point ACS. When the domestic hot water temperature decreases, the
compressors are switched on proportionally to the DHW set point.
At the moment in which there is demand for domestic hot water production, an FS09 minute counter
is active which determines the maximum time for reaching the domestic hot water setpoint; after this
time all the compressors are inserted (if they were not already inserted).
In case of an error of domestic hot water probe the DHW function is inhibited; the unit will however
work normally in cooling or heating.
If during the production of domestic hot water the main thermoregulation (main exchanger input
probe) goes into error, there is no blockage of the unit but the cooling or heating thermoregulation
will be disabled and DHW water production will remain active.
