1592015610 User manual IC200D EVO GB rel1.0 10.11.2015_rev10 IC200D 96/192
Compressors and domestic hot water heaters in Anti-legionella cycle
FS46=0 Compressors and heaters used at the same time in Anti-legionella cycle
When the anti-legionella cycle is active, all the compressors and heating elements configured for the
domestic hot water are switched on; once the set-point (FS14) is reached, the compressors are switched off
(delayed of CO04 time) while the heating elements are switched off when the the set-point (FS14) + band
(FS20) is reached.
The anti-legionella cycle is enabled for FS19 time; during this time the machine works to maintain the anti-
legionella set point.
The Anti-legionella cycle lasts maximum FS29 minutes.
It is possible to switch off the compressors if the domestic hot water temperature reaches FS50 temperature.
At the end of this procedure, the controller returns to the production of domestic hot water or normal
heating/cooling regulation.
If the FS02 parameter (operating priority) gives priority to heating/cooling regulation and the production of
anti-legionella needs to be enabled, then the heat regulation set-point has to be reached beforehand.
The anti-legionella cycle has to end before heating/cooling regulation can start, even if the FS02 parameter
gives the priority to heating/cooling regulation.
FS46=1 First compressors then heaters are used in Anti-legionella cycle
At first the compressors are switched on; when FS50 set point is reached, all the compressors are switched
off and domestic hot water heaters are switched on to reach the Anti-legionella set point (FS14) + band
(FS20).
Once reached, the instrument works to maintain the set point for FS19 time; if water temperature falls down
below FS14 the heaters are switched on and if falls down below FS 50 compressors are switched on.
The Anti-legionella cycle lasts maximum FS29 minutes.
FS46=2 Only heaters are used in Anti-legionella cycle
Only domestic hot water heaters are used in the Anti-legionella cycle (compressors off); when FS14 + FS20
temperature is reached the heaters 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.
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; domestic 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 domestic 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.
38.2 WATER PUMPS MANAGEMENT
The domestic hot water pump is managed in domestic 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:
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