8
Refrigerant valves
Refrigerant valves
GRV 220 L
4.2.4 - USING THE FLARE VALVE
Liquid side
3-way valve
3-waay
valve
Gas side
Indoor
unit
4.3.2 - TABLES OF CURRENT
* The indoor unit
is connected to
230/1/50.
• After completing the connection to the internal and external units, the
connections and internal unit must be bled.
• Proceed as indicated below:
1 - Undo the plugs (1).
2 - Remove the bleed plug (2).
3 - Connect the vacuum pump (3).
4 - We recommend that you fit a shut-off valve (4).
5 - After bleeding, close the shut-off valve (4).
6 - Open the two valves completely until they are right against the seat.
7 - Remove the vacuum pump (3) and the shut-off valve (4).
8 - Tighten the bleed plug (2).
9 - Fully tighten the plugs (1).
10 - Add more charge if necessary (see § 4.2).
Note: Refrigerant and electrical connections can be supplied as accessories. See the "Accessories" section.
Cooling mode
Heating mode
CSCV 175 L
Unit on 400V/3N/50Hz *
Nominal current
A
Max. current
A
Starting current
A
Max. current with heating
2 kW
A
3 kW
A
4.2
7
21
9.5
14
5.2
8
38
9.5
14
CSCV 225 L
GRV 180 L
Cooling mode
Heating mode
CSCV 175 L
Unit on 230V/1/50Hz
Nominal current
A
Max. current
A
Starting current
A
Max. current with heating
2 kW
A
3 kW
A
11.2
13.4
52
9.5
14
4.2.3 - CONNECTION TO THE OUTDOOR UNIT
• Connect the gas and liquid pipes on the corresponding Flare
valves.
• Tighten by hand.
• Tighten using torque wrenches (see tightening torque in the table
page 7).
4.3 - ELECTRICAL CONNECTIONS
NOTES :
• Class 1 appliance.
• The electrical connection conduits must be fixed.
• The electrical installation must be carried out in compliance with the rules in force (especially NFC 15-100
CEI 364).
• The cables are not included in the supplies.
MAINS SUPPLY
• The power supply must come from an isolation and electric protection device (not supplied) in accordance with existing
regulations. It is connected to the outdoor unit. See the connection diagram below.
• The acceptable voltage variation is
±
10% during operation.
CAUTION: In the case of a three-phase power supply, prior to commissioning the unit, make sure that the phase
rotation order is correct. The phase-sequence controller restricts the unit from operating if the 3 supply phases are
not in order or if a phase is absent.
4.3.1 - CONNECTION CABLES
MAINS POWER CABLE
• on 230V/1/50Hz
: 3 G 2.5 mm
2
• on 400V/3N/50Hz : 5 G 1.5 mm
2
without electrical heating,
5 G 2.5 mm
2
with electrical heating.
CONNECTION CABLE BETWEEN THE UNITS
• Use a cable of section equivalent to that of the mains power cable.
NOTE
The sections are given as an
indication only.
They must be checked and
adapted to suit the installation
conditions according to existing
standards.
