17 Electrical installation
Installation and operation manual
39
REMA5+REYA8~20A7Y1B
VRV 5 heat recovery
4P684060-1 – 2022.02
NOTICE
Make sure to open all stop valves after (pre-) charging the
refrigerant.
Operating with the stop valves closed will damage the
compressor.
16.8
To fix the fluorinated greenhouse
gases label
1
Fill in the label as follows:
b
Contains fluorinated greenhouse gases
2
1
1
1
2
2
kg
tCO
2
eq
GWP × kg
1000
=
=
+
kg
=
kg
=
GWP: XXX
RXXX
a
f
c
d
e
a
If a multilingual fluorinated greenhouse gases label is
delivered with the unit (see accessories), peel off the
applicable language and stick it on top of
a
.
b
Factory refrigerant charge: see unit name plate
c
Additional refrigerant amount charged
d
Total refrigerant charge
e
Quantity of fluorinated greenhouse gases
of the total
refrigerant charge expressed as tonnes CO
2
equivalent.
f
GWP = Global warming potential
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.
2
Fix the label on the inside of the outdoor unit near the gas and
liquid stop valves.
16.9
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).
17
Electrical installation
CAUTION
See
"2 Specific installer safety instructions"
8] to make
sure this installation complies with all safety regulations.
17.1
About electrical compliance
This equipment complies with:
▪
EN/IEC 61000‑3‑11
provided that the system impedance Z
sys
is
less than or equal to Z
max
at the interface point between the user's
supply and the public system.
▪ EN/IEC
61000‑3‑11
=
European/International
Technical
Standard setting the limits for voltage changes, voltage
fluctuations and flicker in public low-voltage supply systems for
equipment with rated current ≤75 A.
▪ 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 system impedance Z
sys
less than or equal to Z
max
.
▪
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.
Single outdoor unit
Model
Z
max
[Ω]
Minimum S
sc
value
[kVA]
REMA5
—
2598
REYA8
—
2789
REYA10
—
3810
REYA12
—
4157
REYA14
—
4676
REYA16
—
5369
REYA18
—
6062
REYA20
—
7274
Multiple outdoor units
Model
Z
max
[Ω]
Minimum S
sc
value
[kVA]
REYA10
—
5196
REYA13
—
5387
REYA16
—
5577
REYA18
—
6599
REYA20
—
6945
REYA22
—
7967
REYA24
—
8158
REYA26
—
8833
REYA28
—
9526
INFORMATION
Multi units are standard combinations.
17.2
Safety device requirements
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.
