5
START UP
5.4 PROCEDURES
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On the machine:
• Set the main system switch to ON.
• Set the main door-lock switch to ON.
• The control panel display lights up.
On the Control Panel:
• Set the language of the control panel.
In case of geothermal probe:
• Perform the glycol mixing operation.
• Select pump in ON.
• Allow the geothermal circulator to run for at least 4 hours after checking that the circulator is primed and that the probes are adequately
vented.
System guided configuration:
• Enter maintenance technician password
• Select system guided configuration
• Follow the step-by-step procedure, entering the required values according to the system configuration.
Make sure the geothermal circulator is primed and that the flow is guaranteed during its operation.
For the electrical connection of the device, follow the instructions in the wiring diagram of the unit.
5.4.2
Flow switch activation (versions /P with exchange in well - disposable water)
Before starting the system:
• Lower the circuit breakers to protect the compressors
• Test the device reducing the water flow to the exchanger until it stops
• Check the alarm signal on the display and the consequent automatic release of the power contactor.
5.4.3 Initial
start-up
The initial start-up of the heat pump must be carried out by personnel authorised by the manufacturer.
On the machine:
• Turn OFF the general differential switch located outside the machine
• Place the remote on/off switch SA1 (see wiring diagram) in the OFF position
• First remove the front panel then the electrical panel.
• Lift the magnetothermal switch on the compressors.
• Close the cover of the electrical panel
• Place the door interlock switch in the ON position
• Put the general differential switch in the ON position.
• At this point the control panel will switch on to indicate the presence of voltage inside the machine.
• To allow the oil inside the compressor to warm up, select the OFF operation on the control panel and wait at least 8 hours before activating
the unit.
• Follow the guided step-by-step configuration procedure, entering the required values according to the system configuration.
In case of operation with well water, check correct functioning of the relative flow switch.
In the case of units in the well version (/P), make sure that the water in the source is compatible with the materials of the
plate heat exchanger. It is also necessary to be certain that the flow rate of the source is not lower than that indicated in the
technical data of the unit. These checks must be repeated periodically to prevent dangers of serious breakages to the unit.
Rev. C 09-2020
MTEC.3810.GB-C-1 Operation and maintenance manual serie WZA English
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