Daikin RXYSQ4TAY1B, Installation And Operation Manual

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5 Installation
Installation and operation manual
9
RXYSQ4~6TAY1B
VRV IV-S system air conditioner
4P482256-1 – 2017.03
E: Piping between BP unit and RA DX indoor unit
Indoor unit capacity
index
Piping outer diameter size (mm)
Gas pipe Liquid pipe
15~42 9.5 6.4
50 12.7
60 9.5
71 15.9
4.2.4 To select refrigerant branch kits
For piping example, refer to "4.2.3 To select the piping size" on
page 8 .
Refnet joint at first branch (counting from outdoor unit)
When using refnet joints at the first branch counted from the outdoor
unit side, choose from the following table in accordance with the
capacity of the outdoor unit.
Example: Refnet joint A→B‑1.
Outdoor unit capacity type
(HP)
Refrigerant branch kit
4~6 KHRQ22M20T
Refnet joints at other branches
For refnet joints other than the first branch, select the proper branch
kit model based on the total capacity index of all indoor units
connected after the refrigerant branch.
Example: Refnet joint
B‑1→C‑1.
Indoor unit capacity index Refrigerant branch kit
<182 KHRQ22M20T
Refnet headers
Concerning refnet headers, choose from the following table in
accordance with the total capacity of all the indoor units connected
below the refnet header.
Indoor unit capacity index Refrigerant branch kit
<182 KHRQ22M29H
INFORMATION
Maximum 8 branches can be connected to a header.
4.3 Preparing electrical wiring
4.3.1 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
Recommended
fuses
RXYSQ4~6 18.5 A 25 A
For all models:
▪ Phase and frequency: 3N~ 50 Hz
▪ Voltage: 380-415 V
▪ Transmission line section:
Transmission wiring Vinyl cords with 0.75 to
1.25 mm² sheath or cables
(2‑core wires)
Maximum wiring length
(= distance between outdoor
and furthest indoor unit)
300 m
Total wiring length
(= distance between outdoor
and all indoors)
600 m
If the total transmission wiring exceeds these limits, it may
result in communication error.
5 Installation
5.1 Opening the units
5.1.1 To open the outdoor unit
DANGER: RISK OF ELECTROCUTION
DANGER: RISK OF BURNING
2×
5.2 Mounting the outdoor unit
5.2.1 To provide the installation structure
Prepare 4 sets of anchor bolts, nuts and washers (field supply) as
follows:
(mm)
>150
620
350
(345-355)
4× M12
a
a Make sure not to cover the drain holes.