1592015820 User manual IC260_261L_D DUO FW1.9 rel. 1.0
Pag. 90 of 149
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 (sanitary 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 sanitary 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 “Sanitary water priority” is active, the priority is given to the
production of sanitary water.
If defrosting is required, this takes priority over the production of sanitary water or anti-legionella even if
FS02=1.
41.2 Water Pumps Management
The sanitary 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 sanitary water regulation the water pump is ON.
If the machine is forced to work only in sanitary water (digital input “only sanitary 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 sanitary water, the evaporator water pump has to
be configured.
The times for managing the sanitary water pump are as follows:
The valve 1 and valve 2 are switched with the delay of FS27 seconds from start-up of the sanitary water
pump
The sanitary water pump is switched off with the delay of FS28 seconds from switching valve 1 and valve 2
The sanitary water flow switch is operated according to the times of the evaporator flow switch (parameter
AL15, AL16, AL17 and AL18).
Sanitary water flow switch, solar panel flow switch and overload sanitary water pump.
It is possible to enable the sanitary 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
sanitary water flow switch or sanitary water pump overload is active, sanitary water regulation is disabled;
heating and cooling regulation proceed normally.
If
solar panel flow switch is active, solar panel regulation is disabled; heating and cooling regulation proceed
normally.
