38
EVH-X SPACE 2.1 - 12.1
M0SM10N17-03
General
The indicated operations should be done by
qualified technician with specific training on the
product.
The electrical and hydraulic connections upon
request; the remaining work on the system is the
responsibility of the installer.
Agree upon the start-up date with the service
centre sufficiently in advance.
For details refer to the different manual sections.
Before checking, please verify the following:
• the unit should be installed properly and in
conformity with this manual
• the electrical power supply line should be
sectioned at the beginning
• the line sectioning device is open, locked and
equipped with the suitable warning signs
• ensure no voltage is present
After turning off the power, wait at least 10
minutes before accessing to the electrical panel or
any other electrical component.
Before accessing check with a multimeter that
there are no residual stresses.
Preliminary checks
Unit OFF power supply
1 safety access
2 functional clearances
3 structure integrity
4 ventilatori girano liberamente
5 unit on vibration isolators
6 unit input water filter + shut-off valves for
cleaning
7 vibration isolators on water connections
8 expansion tank (indicative volume = 10% system
content)
9 minimum system water content
10 cleaned system
11 loaded system + possible glycol solution +
corrosion inhibitor
12 system under pressure
13 vented system
14 refrigerant circuit visual check
15 earthing connection
16 power supply features
17 electrical connections provided by the customer
Start-up sequence
Power unit ON
1 compressor crankcase heaters operating at least
since 8 hours
2 off-load voltage measure
3 phase sequence check
4 unit ON
5 load voltage measure and absorptions
6 measure return and supply water temperature
7 check no anomalous vibrations are present
8 climatic curve personalization
9 climatic curve personalization
10 scheduling personalization
11 complete and available unit documentation
Refrigerantion circuit
1 Visually check the refrigerating circuit: the
presence of oil stains can mean leakage
(caused, for example, by transport, handling or
other).
2 Check that the refrigerating circuit is under
pressure: use service pressure gauges to check
that the refrigerant circuit is pressurized.
3 Ensure that all the service outlets are closed
with the proper caps; if caps are not present a
leak of refrigerant is possible.
4 Aprire tutti i rubinetti del circuito frigorifero (se
presenti).
Water circuit
1 Before realizing the unit connection make sure
that the hydraulic system has been cleaned up
and the clearing water has been drained .
2 Check that the water circuit has been charged
and pressurised .
3 Check that the cut-off valves on the circuit are
in the "OPEN" position.
4 Check that no air is present in the circuit, if
required, evacuate using the air bleeding valve
placed at the system
5 When using antifreeze solutions, make sure the
glycol percentage is suitable for the type of use
envisaged.. → table page following
Neglecting the washing will lead to several filter
cleaning interventions and at worst cases can
cause damages to the exchangers and the other
parts.
8 START-UP
Weight of glycol (%) 10 20 30
Freezing temperature (°C) -3,9 -8,9 -15,6
Safety temperature (°C) +1 -4 -10
Glycol solutions
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