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English
5 - Start-up
WARNING
The unit must be started for the first time by
personnel suitably trained by one of Authorised
Service Centre. Failure to meet this requirement
will immediately void the warranty.
NOTE
The operations carried out by authorised
personnel are limited to the start-up of the
unit, and do not include any other operation on
the plant, such as, for example, electrical and
hydraulic connections etc.
5.1 Preliminary check
The checks listed below shall be performed before starting the unit
and before the arrival of the personnel authorised.
n
Check the cross-section of the power supply and grounding
cables; make sure that terminals are tightened and check the
correct operation of contactors, with the main switch open.
n
Connect the external pump line to terminals 4 and 5 and the flow
switch to terminal 2 and 3 (refer to electrical connections for
details)
n
Check that the components of the external water circuit (pump,
user equipment, filters, power supply tank and reservoir, flow
switch and filter) have been installed properly, and according to
the manufacturer’s instructions.
n
Check the filling of the hydraulic circuits, and make sure that
the fluid circulation is correct, without any trace of leaks and air
bubbles. Glycol mixture must not be used.
n
Check that the direction of rotation of the pumps is correct, and
that fluids have been circulating for at least 12 hours.
n
Adjust the liquid distribution network in such a way that the flow
rate inside the Water heat exchanger is within the specified range.
n
Check that the water quality is to the required specifications.
5.2 Start-up
Start-up sequence:
n
Turn on the Main switch.
n
Check the operation of all the external equipment, and make sure
that the control devices of the plant are properly calibrated.
n
Start the pump and provide the nominal flow rate as indicated in
the technical data. In order to do so, a flow meter or a differential
pressure transducer across the WHE unit is needed.
n
Set the desired fluid temperature on the control board.
n
Calibrate the flow switch intervention as described in the
accessory chapter
Initial settings
The indoor and outdoor unit control PCB utilises a semiconductor
memory element (EEPROM). The settings required for operation were
made at the time of shipment. If the EPROM needs to be changed, set
the parameters following the next instruction:
1. Keep pressing the
,
and
buttons
simultaneously for 4 or more seconds. The "maintenance
func" screen appears on the LCD display.
2. Press the
or
to see each menu. If you wish to
see the next screen instantly, press the
or
button.
Select "8. detailed settings" on the LCD display and press the
button.
The "Detailed settings" screen appears on the LCD display.
Select the "Unit no." by pressing the
or
button for
changes.
3. Select the "Code no." by pressing the
or
button.
change the "Code no." by pressing the
or
button
(or keeping it pressed).
