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16.6
To check refrigerant piping joints
for leaks after charging refrigerant
Tightness test of field-made refrigerant joints indoors
1 Use a leakage test method with a minimum sensitivity of 5 g of
refrigerant/year. Test leaks using a pressure of at least 0.25
times the maximum working pressure (see "PS High" on the
unit nameplate).
If a leak is detected
1 Recover the refrigerant, repair the joint, and repeat the test.
2 Perform the leak tests see
"15.3.2 To perform a leak
3 Charge refrigerant.
4 Check for refrigerant leaks after charging (see above).
17
Electrical installation
CAUTION
See
"2 Specific installer safety
sure this installation complies with all safety regulations.
17.1
About electrical compliance
This equipment complies with:
▪ EN/IEC 61000‑3‑12 provided that the short-circuit power S
greater than or equal to the minimum S
point between the user's supply and the public system.
▪ EN/IEC
61000‑3‑12
=
Standard setting the limits for harmonic currents produced by
equipment connected to public low-voltage systems with input
current >16 A and ≤75 A per phase.
▪ It is the responsibility of the installer or user of the equipment to
ensure, by consultation with the distribution network operator if
necessary, that the equipment is connected ONLY to a supply
with a short-circuit power S
minimum S
value.
sc
Model
RXYSA8
RXYSA10
RXYSA12
RXYSA8~12AMY1B
VRV 5-S system air conditioner
4P752781-1B – 2024.02
test" [ 4 33].
instructions" [ 4 5] to make
sc
value at the interface
sc
European/International
Technical
greater than or equal to the
sc
Minimum S
value
sc
2684 kVA
3101 kVA
3383 kVA
17.2
Specifications of standard wiring
components
NOTICE
We recommend using solid (single-core) wires. If stranded
wires are used, slightly twist the strands to consolidate the
end of the conductor for either direct use in the terminal
clamp or insertion in a round crimp-style terminal. Details
are described in "Guidelines when connecting the electrical
wiring" in the installer reference guide.
Component
(a)
Power supply
MCA
cable
Voltage
Phase
Frequency
Wire size
Interconnection
Voltage
cable
Wire size
is
Recommended field fuse
Earth leakage circuit
breaker/ residual current
circuit breaker
(a)
MCA=Minimum circuit ampacity. Stated values are maximum
values.
Please use the table above to specify the requirements for the power
supply wiring.
NOTICE
When using residual current operated circuit breakers, be
sure to use a high-speed type 300 mA rated residual
operating current.
17.3
Connecting the electrical wiring
Use the following methods for installing wires:
Wire type
Single-core wire
Or
Stranded conductor
wire twisted to "solid-
like" connection
a Curled wire (single-core or twisted
stranded conductor wire)
b Screw
c Flat washer
17 Electrical installation
Outdoor unit
RXYSA8
RXYSA10
18.5 A
22 A
380-415 / 400 V
3N~
50/60 Hz
5 core cable
Must comply with national wiring
regulation.
Wire size based on the current, but
not less than:
2.5 mm²
220-240 V
Only use harmonised wire providing
double insulation and suitable for
applicable voltage.
2-core shielded cable
0.75-1.5 mm²
25 A
Must comply with national wiring
regulation.
Installation method
c b
A
A´
c
a
Installation and operation manual
RXYSA12
24 A
4 mm²
32 A
AA´
a
37
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