Technical data

Ichill 200CX EVO rev 1.1 14/11/2013
Pag. 79 of 151
FS46=3 Only compressors are used in Anti-legionella cycle
Only compressors are used in the Anti-legionella cycle (heaters off); when FS14 + FS20 temperature is
reached the compressors are switched off.
Once reached the set point, the instrument works to maintain the set point for FS19 time; the Anti-legionella
cycle lasts maximum FS29 minutes.
Priority management (domestic hot water or heating/cooling)
If FS02 =0, priority is given to the production of chilled/hot water; sanitary hot water is produced once the
chiller/heat pump requests has been satisfied.
The production of anti-legionella is stopped in case of chiller/heat pump requests.
If FS02=1, priority is given to the production of domestic hot water (or anti-legionella). Chilled water or hot
water can be produced once the need for sanitary hot water has been satisfied (if required).
If FS02=2, if the digital input configured as “Domestic hot water priority” is active, the priority is given to the
production of domestic hot water.
If defrosting is required, this takes priority over the production of domestic hot water or anti-legionella even if
FS02=1.
40.2 Water Pumps Management
The domestic hot water pump is managed in sanitary hot water regulation or during the anti-legionella cycle.
Evaporator water pump:
• if CO16=1 (evaporator water pump always on), also in domestic hot water regulation the water pump
is ON. If the machine is forced to work only in domestic hot water (digital input “only domestic hot
water” is active), the evaporator water pump is:
o OFF if FS47=1
o ON if FS47=0
• if CO16=2 (evaporator water pump on if at least a compressor is on), the parameter FS47 allows to
choose if the water pup is on or off in case of sanitary hot water production. If the machine has the
sanitary valves placed in the gas circuit, in case of contemporary cooling and sanitary hot water
production, the evaporator water pump is on.
If only one water pump is needed for cooling, heating and domestic hot water, the evaporator water pump
has to be configured.
The times for managing the domestic hot water pump are as follows:
• The valve 1 and valve 2 are switched with the delay of FS27 seconds from start-up of the domestic hot
water pump
• The domestic hot water pump is switched off with the delay of FS28 seconds from switching valve 1 and
valve 2
The domestic hot water flow switch is operated according to the times of the evaporator flow switch
(parameter AL15, AL16, AL17 and AL18).
Domestic hot water flow switch, solar panel flow switch and overload domestic hot water pump.
It is possible to enable the domestic hot water flow switch by setting appropriately parameters AL65..AL68.
It is possible to enable the solar panel flow switch by setting appropriately parameters AL69..AL72.
If domestic hot water flow switch or domestic hot water pump overload is active, domestic hot water
regulation is disabled; heating and cooling regulation proceed normally.