AERMEC ANK Panduan Instalasi - Halaman 7
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9. The voltage is within the tolerance of 10% of the unit nominal value
10. Earthing is correctly made. All electric and hydraulic connections are
correctly tightened.
4.2. MACHINE COMMISSIONING
‐ Close the electric control board hatch.
‐ Position the appliance master switch at ON.
‐Make sure that the auxiliary switch contact (IA)
(see wiring diagram) is open (if u sed, and the display LED (I)A must be off.
‐Press the ON key for 3 sec to switch the machine on.
4.3. SEASON CHANGEOVER, OPERATION PARAMETERS
‐ For every season change, check that the functioning limits lie within the
proper limits.
‐ Check that the compressor input current is lower than the maximum
indicated in the technical data table.
‐ Make sure that the voltage value lies within the pre‐fixed limits and that
unbalance between the three phases (three‐phase power supply) is not
above 3%.
SEASON CHANGEOVER FROM PANEL ON MACHINE
Access the USER SET list by touching the insert password key 000
(already displayed); just confirm by re‐pressing the key
The parameter affected is the Sta, changing the value 0 and 1 will change
the operation from cooling to heating accordingly. For further informa‐
tion refer to the USER MANUAL
SEASON CHANGEOVER FROM PR3
Just act directly on the switch. The machine switches off automatically‐
and switches back‐on with the selected functioning mode. Advance based
on the timeframe for the completion of works for the system. Prior to
the work to be carried out by the AERMEC service personnel, all other
works (electrical and hydraulic hook‐ups, priming and bleeding of air
from the system) must have been completed.
7
5.1. SET POINT IN COOLING MODE. PARAMETER 1STF
(factory set)=7°C/44.9°F, ∆t=9°C.
5.2. SET POINT IN HEATING MODE. PARAMETER 3STC
(factory set) = 45C/113°F, ∆t = 9°C.
If the unit power supply is restored after a temporary interruption,
the set mode will be kept in the memory.
5.3. COMPRESSOR START-UP DELAY
Two functions have been prepared to prevent compressor start‐ups
that are too close.
‐
‐
5.4. CIRCULATION PUMP
The circuit board delivers an output for pump management, which
starts on commissioning and remains on for at least 150 seconds
and controls the state of the probes.
After the first 40 seconds of pump operation the water flow switch
closes and the unit starts, when the water flow rate is in normal
working conditions, the water flow rate alarm functions are acti‐
vated (differential pressure switch or flow meter). When the ma‐
chine enters stand‐by mode, the pump remains on for 30 sec and
controls the flow meter or the pressure switch
5.5. FAN SPEED CONTROL
DCPX ACCESSORY
COOLING OPERATION AT LOW AMBIENT CONDITIONS
AND HEATING OPERATION AT HIGH AMBIENT CONDI-
TIONS.
To allow correct functioning of the unit at different external tem‐
peratures, the MODUCONTROL by reading the pressure via the
pressure probe, controls the rotation speed of the fans, thus allow‐
ing to increase and/or decrease heat exchange, keeping the con‐
densation or evaporation pressures more or less constant. The fan
functions independently with respect to the compressor. Remem‐
ber that the DCPX is mandatory for the production of DHW. And
cooling below 20°C/68°F.
5.6. ANTI-FREEZE ALARM
The anti‐freeze alarm is never active if the machine is off or in stand
‐by mode. In order to prevent breakage of the plate heat exchanger
due to freezing of the water it contains, the MODUCONTROL stops
the compressor if the temperature detected by the probe postioned
at the outlet of the heat exchanger and in inlet to the chiller is
below +4°C/39°F.
THIS ANTI‐FREEZE SET TEMPERATURE CAN ONLY BE VARIED BY AN
AUTHORISED AFTER‐SALES CENTRE AND ONLY AFTER HAVING CHECKED
THAT THERE IS ANTI‐FREEZE SOLUTION IN THE WATER SYSTEM.
The intervention
and not pump block, which remains active along with the switch‐on
of the resistance if installed. To restore normal functions the tem‐
5. OPERATION
Minimum time from last switch‐off 180 seconds.
Minimum time from last switch‐on 300 seconds.
of this alarm determines compressor stop