30 18.01. 6755441_03
ANL-ANLH 020-202
EN
• SEASON CHANGE controlled from the PR3
• ON/OFF CONTROL from the PR3
Confirm the selection pressing key and exit the
menu with the key
Once the PR3 remote panel is enabled the change of
season selection can be made directly from the switch
. The unit will automatically switch on and off
with the selected operating mode.
For further information refer to the USER manual.
9. OPERATING CHARACTERISTICS
9.1. COOLING SETPOINT
9.2. HEATING SETPOINT
Intheeventofamomentarypowerinterruponthe
selectedoperangmodewillberetainedinmemory.
9.3. COMPRESSOR DELAY TIMERS
Toavoidexcessivecompressorstartstwofunconsare
provided:
- Minimum time from last stop 60 seconds in cooling
mode.
- Minimum time from last start 300 seconds in heat-
ing mode.
9.4. CIRCULATING PUMPS
Thewiringschemacprovidesoutputstocontrol
thecirculangpumps.Thesystemsidepumpstarts
immediatelyandaer30secondsofoperaon,when
thewaterowisstabilised,thepressuredierenal/
owswitchcontrolfunconisenabled.Ifnoalarms
are present the unit will start.
9.5.
The alarm
11
isalwaysacveeveninstandbymode.
To prevent damage to the plate heat exchanger by
freezingofthewaterwithintheunitisstoppedand
an alarm raised if the water temperature drops below
theminimuman-freezesetpointof3°C.Theunitcan
onlyre-startaeramanualresetandifthean-freeze
sensor reads a water temperature above 4°C
12
. With
theunitinomodeandwithawatertemperature
below4°Cthefactorystandardedelectricheaters
ontheheatexchangerareturnedon,andturnedo
when the water temperature exceeds 5°C. The water
pumpalwaysremainsacve.
9.6. WATER FLOW ALARM
Theunithasalowwaterowratealarmusingafac-
toryeddierenalpressureswitchorowswitch.
Thissafetyacvatesaertherst30secondsofpump
operaonifthewaterowrateisnotsucient.The
operaonofthisalarmstopsthecompressorsandthe
pump.
WARNING
11
Theanti-freezesetpoint
can only be adjusted by an
authorised service centre and
only after verifying that the
hydraulic circuit has the cor-
rect%ofanti-freezesolution.
12
If this alarm occurs immediate-
ly call the authorised technical
service assistance.
WARNING
FOR 230V/1/50Hz UNITS:
The unit is provided with a compres-
sor soft starter. This device contains
capacitors that could overheat
through repeated quick starts. If
power supply is removed wait at
least 3 minutes before powering up.