Preparing Electrical Wiring; About Electrical Compliance; Safety Device Requirements; Installation - Daikin RXYSCQ4TMV1B Installer And User Manual

6 Installation

Maximum height difference BP-BP
▪ Example 2: H4≤Limit
Maximum height difference BP-indoor
▪ Example 2: H5≤Limit
(a) Assume equivalent piping length of refnet joint=0.5 m and refnet header=1 m (for calculation purposes of equivalent piping length, not for
refrigerant charge calculations).
Example 1 (VRV DX indoor units)
Example 1.1
a b c d
A B C D
h i j
1 2 3
Example 1.2
a
H1
c d
1 2
Example 1.3
a
b c d e
1 2 3
Refnet joint
Refnet header
BP box
1~8 VRV DX indoor units
11~18 RA DX indoor units
5.4

Preparing electrical wiring

5.4.1

About electrical compliance

Equipment complying with
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.).
5.4.2

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.
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
RXYSCQ4+5 29.1 A
For all models:
▪ Phase and frequency: 1~ 50 Hz
▪ Voltage: 220-240 V
▪ Transmission line section:
Transmission wiring
Installer and user reference guide
14
Requirement
e f g
H1
E F G
p
k l m n
4 5 6 7
8
H2
i
A B
k
b j
7 8
H2
e f g h
3 4 5 6
H1
f g h i
4 5 6 7
8
H2
EN/IEC 61000‑3‑12 (European/
Recommended
fuses
32 A
Vinyl cords with 0.75 to
1.25 mm² sheath or cables
(2‑core wires)
VRV DX
N/A
N/A
Example 2 (RA DX indoor units)
a
A
c
H3
d
H4
H1
BP1
11 12 13
Maximum wiring length
(= distance between outdoor
and furthest indoor unit)
Total wiring length
(= distance between outdoor
and all indoors)
If the total transmission wiring exceeds these limits, it may
result in communication error.
6 Installation
6.1

Overview: Installation

This chapter describes what you have to do and know on-site to
install the system.
Typical workflow
Installation typically consists of the following stages:
▪ Mounting the outdoor unit.
▪ Mounting the indoor units.
▪ Connecting the refrigerant piping.
▪ Checking the refrigerant piping.
▪ Charging refrigerant.
▪ Connecting the electrical wiring.
▪ Finishing the outdoor installation.
Limit
RA DX
15 m
5 m
b
e
BP2
BP3
14 15 16
l
H2
H5 m
17
18
300 m
600 m
RXYSCQ4+5TMV1B
VRV IV-S system air conditioner
4P404224-1 – 2015.03