About Electrical Compliance; Safety Device Requirements; Field Wiring: Overview - Daikin VRV IV+ Installation And Operation Manual

WARNING
ALWAYS use multicore cable for power supply cables.
15.1

About electrical compliance

This equipment complies with:
▪ 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.
RYYQ+RYMQ+RXYQ8~20U7Y1B
VRV IV+ heat pump
4P546220-1C – 2020.10
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
15.2

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.
For standard combinations
Selection and sizing of the wiring should be done in accordance with
is
sys
the applicable legislation based on the information mentioned in the
table below.
Model
RYYQ8/RYMQ8/RXYQ8
RYYQ10/RYMQ10/RXYQ10
RYYQ12/RYMQ12/RXYQ12
RYYQ14/RYMQ14/RXYQ14
RYYQ16/RYMQ16/RXYQ16
is
sc
RYYQ18/RYMQ18/RXYQ18
RYYQ20/RYMQ20/RXYQ20
For all models:
▪ Phase and frequency: 3N~ 50 Hz
▪ Voltage: 380~415 V
▪ Transmission line section: 0.75~1.25 mm
1000 m. If the total transmission wiring exceeds these limits, it
may result in communication error.
For non-standard combinations
Calculate the recommended fuse capacity.
sc
Formula Calculate, by adding the minimum circuit amps of each
used unit (according to the table above), multiply the
result by 1.1 and select the next higher recommended
fuse capacity.
Example Combining the RXYQ30 by using the RXYQ8,
RXYQ10, and RXYQ12.
▪ Minimum circuit ampacity of the RXYQ8=16.1 A
▪ Minimum circuit ampacity of the RXYQ10=22.0 A
▪ Minimum circuit ampacity of the RXYQ12=24.0 A
Accordingly, the minimum circuit ampacity of the
RXYQ30=16.1+22.0+24.0=62.1 A
Multiply the above result by 1.1: (62.1 A×1.1)=68.3 A,
so the recommended fuse capacity would be 80 A.
NOTICE
When using residual current operated circuit breakers, be
sure to use a high-speed type 300 mA rated residual
operating current.
15.3

Field wiring: Overview

Field wiring consists of:
▪ power supply (including earth),
▪ DIII transmission wiring between communication box and outdoor
unit,
▪ RS‑485 transmission wiring between communication box and
monitoring system.
Example:
15 Electrical installation
Minimum Recommended
circuit fuses
ampacity
16.1 A 20 A
22.0 A 25 A
24.0 A 32 A
27.0 A 32 A
31.0 A 40 A
35.0 A 40 A
39.0 A 50 A
2
, maximum length is
Installation and operation manual
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