Preparing Electrical Wiring; About Preparing Electrical Wiring; About Electrical Compliance; Safety Device Requirements - Daikin VRV IV+ RYYQ12U7Y1B Series Installer And User Manual

NOTICE
There are restrictions on the refrigerant pipe connection
order between outdoor units during installation in case of a
multiple outdoor unit system. Install according to following
restrictions. The capacities of outdoor units A, B and C
must fulfill the following restriction conditions: A≥B≥C.
A B
a b c
a To indoor units
b Outdoor unit multi connecting piping kit (first branch)
c Outdoor unit multi connecting piping kit (second branch)
5.4

Preparing electrical wiring

5.4.1

About preparing electrical wiring

INFORMATION
Also read the precautions and requirements in the
"General safety precautions" chapter.
WARNING
▪ If the power supply has a missing or wrong N-phase,
equipment might break down.
▪ Establish proper earthing. Do NOT earth the unit to a
utility pipe, surge absorber, or telephone earth.
Incomplete earthing may cause electrical shock.
▪ Install the required fuses or circuit breakers.
▪ Secure the electrical wiring with cable ties so that the
cables do NOT come in contact with sharp edges or
piping, particularly on the high-pressure side.
▪ Do NOT use taped wires, stranded conductor wires,
extension cords, or connections from a star system.
They can cause overheating, electrical shock or fire.
▪ Do NOT install a phase advancing capacitor, because
this unit is equipped with an inverter. A phase
advancing capacitor will reduce performance and may
cause accidents.
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
legislation.
WARNING
The backup heater MUST have a dedicated power supply
and MUST be protected by the safety devices required by
the applicable legislation.
WARNING
ALWAYS use multicore cable for power supply cables.
5.4.2

About electrical compliance

This equipment complies with:
RYYQ+RYMQ+RXYQ8~20U7Y1B
VRV IV+ heat pump
4P546228-1 – 2018.09
C
comply with the applicable
▪ EN/IEC 61000‑3‑11 provided that the system impedance Z
less than or equal to Z at the interface point between the user's
max
supply and the public system.
▪ EN/IEC 61000‑3‑11 =
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
▪ 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
RYYQ8/RYMQ8/RXYQ8
RYYQ10/RYMQ10/RXYQ10
RYYQ12/RYMQ12/RXYQ12
RYYQ14/RYMQ14/RXYQ14
RYYQ16/RYMQ16/RXYQ16
RYYQ18/RYMQ18/RXYQ18
RYYQ20/RYMQ20/RXYQ20
RYYQ22/RXYQ22
RYYQ24/RXYQ24
RYYQ26/RXYQ26
RYYQ28/RXYQ28
RYYQ30/RXYQ30
RYYQ32/RXYQ32
RYYQ34/RXYQ34
RYYQ36/RXYQ36
RYYQ38/RXYQ38
RYYQ40/RXYQ40
RYYQ42/RXYQ42
RYYQ44/RXYQ44
RYYQ46/RXYQ46
RYYQ48/RXYQ48
RYYQ50/RXYQ50
RYYQ52/RXYQ52
RYYQ54/RXYQ54
INFORMATION
Multi units are standard combinations.
5.4.3

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.
5 Preparation
European/International Technical
less than or equal to Z .
sys max
value at the interface
sc
European/International Technical
greater than or equal to the
sc
Z (Ω) Minimum S
max
value (kVA)
— 4050
— 5535
— 6038
— 6793
— 7547
— 8805
— 9812
— 11573
— 11597
— 12831
— 13585
— 14843
— 15094
— 16352
— 17359
— 19397
— 20378
— 20629
— 21132
— 21887
— 22641
— 23899
— 25157
— 26415
Installer and user reference guide
is
sys
is
sc
sc
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