15 Electrical installation
Installation and operation manual
31
RXYSA4~6A7V/Y1B
VRV 5-S system air conditioner
4P600329-1A – 2020.01
NOTICE
Applicable legislation on
fluorinated greenhouse gases
requires that the refrigerant charge of the unit is indicated
both in weight and CO
2
equivalent.
Formula to calculate the quantity in CO
2
equivalent
tonnes:
GWP value of the refrigerant × total refrigerant
charge [in kg] / 1000
Use the GWP value mentioned on the refrigerant charge
label. That GWP is based on the current legislation on
fluorinated greenhouse gases. The GWP mentioned in the
manual might be outdated.
2
Fix the label on the inside of the outdoor unit. There is a
dedicated place for it on the wiring diagram label.
14.6
To check for refrigerant leaks after
charging
All field made refrigerant joints must be tested for tightness.
No leak shall be detected with a test method that has a sensitivity of
5 grams refrigerant per year or better, at a pressure of at least
0.25 times the maximum working pressure (see "PS High" on the
unit name plate).
In case a leak is detected, recover the refrigerant and repair the
joint(s).
Then:
▪ perform the leak tests see
▪ charge refrigerant.
▪ check for refrigerant leaks after charging (see above).
15
Electrical installation
DANGER: RISK OF ELECTROCUTION
WARNING
▪ All wiring MUST be performed by an authorised
electrician and MUST comply with the applicable
legislation.
▪ Make electrical connections to the fixed wiring.
▪ All components procured on-site and all electrical
construction MUST comply with the applicable
legislation.
WARNING
Appliance shall be installed in accordance with national
wiring regulations.
WARNING
ALWAYS use multicore cable for power supply cables.
15.1
About electrical compliance
Equipment complying with:
▪
EN/IEC 61000‑3‑12
provided that the short-circuit power S
sc
is
greater than or equal to the minimum S
sc
value at the interface
point between the user's supply and the public system.
▪ EN/IEC
61000‑3‑12
=
European/International
Technical
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
sc
greater than or equal to the
minimum S
sc
value.
Model
Minimum S
sc
value
RXYSA4_V
122.95 kVA
RXYSA5_V
154.07 kVA
RXYSA6_V
173.05 kVA
15.2
Safety device requirements
Power supply wiring
The power supply must be protected with the required safety
devices, i.e. a main switch, a slow blow fuse on each phase and an
earth leakage protector in accordance with the applicable legislation.
Selection and sizing of the wiring should be done in accordance with
the applicable legislation based on the information mentioned in the
table below.
Model
Minimum circuit
ampacity
(a)
Recommended
fuses
(a)
Power supply
RXYSA4_V
27.0 A
32 A
1~ 50 Hz
220-240 V
RXYSA5_V
RXYSA6_V
RXYSA4_Y
13.6 A
16 A
3N~ 50 Hz
380-415 V
RXYSA5_Y
RXYSA6_Y
(a)
Per phase (if applicable)
15.3
To connect the electrical wiring to
the outdoor unit
NOTICE
▪ Follow the wiring diagram (delivered with the unit,
located at the inside of the service cover).
▪ Make sure the electrical wiring does NOT obstruct
proper reattachment of the service cover.
1
Remove the service cover. See
2
Connect the transmission wiring as follows:
