1592015610 User manual IC200D EVO GB rel1.0 10.11.2015_rev10 IC200D 95/192
of a compressor, activation of the unloading function,..) or if the domestic hot water set-point is not reached
within a configured timeframe (described in greater detail below).
The FS08 parameter allows you to determine if the domestic hot water heaters can be used when a
compressor is not available.
When the domestic hot water heaters are activated, the regulation band is divided according to the number
of compressors and domestic hot water heaters available (see figure below).
Max time for reaching the domestic hot water set-point
A counter determines the maximum time for reaching the domestic hot water set-point as from the moment
the production of domestic hot water is requested; once this time has elapsed (parameter FS09) there are 2
options:
If FS07=0, enable all the compressors (if not already enabled)
If FS07=1, enable all the compressors and all the heating elements
After all the available steps (compressors and heaters) have been enabled, they remain activated until the
domestic hot water set-point has been reached. At which point the heating elements are switched off
immediately, while the compressors are switched off in order, with a CO03 delay between each one.
In the event of domestic hot water probe 1 faulty (the domestic hot water regulation probe), the domestic hot
water function is stopped and disabled; the controller will regulate normally in chiller or heat pump mode.
In the event of domestic hot water probe 2 faulty (not involved in the regulation), the alarm is signalled
without affecting heat regulation in any way; domestic hot water will continue to be produced normally even if
the display probe is not working properly.
If there is an error with the heat regulation probe (for the chiller or heat pump) during production of domestic
hot water, the machine will continue to operate but the regulation of the chiller or heat pump is disabled and
domestic hot water continues to be produced.
38.1 ANTI-LEGIONELLA FUNCTION
The FS12 parameter allows you to enable the anti-legionella function.
FS12=0 intervals between two anti-legionella cycles; the process will have to be repeated after the
FS13 time since the last anti-legionella production procedure was carried out. The counter continues to
operate, regardless of whether the machine is on or off or in standby; if the power is OFF, the value of the
counter is recorded and then continued when the machine is next started up.
FS12=1 time-bands; Ichill with internal real time clock is required (you need to configure the day of
activation FS18 and the start time FS17).
FS12=2 daily time band (start time FS17 is needed)
To disable the function is necessary to configure FS12=0 and FS13=0 or FS12=1 and FS18=0 or FS12=2
and FS17=0:00.
The function is enabled when the machine is ON. If the request for an anti-legionella cycle is made when the
machine is switched off, the cycle will start immediately when the machine is next switched on and the
priority is given to anti-legionella cycle.
If instead heat regulation is prioritized, the anti-legionella cycle will run when the chiller/heat pump set-point
is reached.
The function must remain active for the minimum time configured with parameter FS19 (activated when the
temperature of the domestic hot water reaches the anti-legionella set-point) and can last a maximum of FS29
minutes.
If FS02=0 the Anti-legionella cycle starts when cooling/heating set point is reached.
If the legionella cycle ends for maximum time and not to have achieved and maintained the set point for the
time needed, ALEG alarm is generated (registered in the alarm log); the alarm has no effect on regulation
and it is only a warning.
If the cycle ends because of alarms, defrost, OFF machine, etc., the alarm is generated and the legionella
request is maintained (when the alarm is reset, the legionella cycle starts).
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