Daikin RXYTQ48TYF [7/36] Installation
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Daikin RXYTQ48TYF [7/36] Installation

Daikin RXYTQ44TYF [7/36] Installation
5 Installation
Installation and operation manual
7
RXYTQ8~16T7YF
VRV IV system air conditioner
4P388987-1C – 2016.02
If Then
≤2m
a
b
≤2 m
>2m
a
≤2 m ≤2 m
≥200 mm
≥200 mm
b
>2 m >2 m
a To indoor unit
b Piping between outdoor units
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 C
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)
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
RXYTQ8 16.1A 20A
RXYTQ10 22.0A 25A
RXYTQ12 24.0A 32A
RXYTQ14 27.0A 32A
RXYTQ16 31.0A 40A
What? Case1 Case2
Phase and frequency 3N~50Hz 3N~60Hz
Voltage 380-415V 400V
Transmission line
section
(1)
0.75~1.25mm
2
For multi combinations
Calculate the recommended fuse capacity
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 RXYTQ30 by using the RXYTQ8,
RXYTQ10, and RXYTQ12.
▪ Minimum circuit ampacity of the RXYTQ8=16.1A
▪ Minimum circuit ampacity of the RXYTQ10=22.0A
▪ Minimum circuit ampacity of the RXYTQ12=24.0A
Accordingly, the minimum circuit ampacity of the
RXYTQ30=16.1+22.0+24.0=62.1A
Multiplying the above result by 1.1 (62.1×1.1)=68.31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.
5 Installation
5.1 Opening the units
5.1.1 To open the outdoor unit
DANGER: RISK OF ELECTROCUTION
DANGER: RISK OF BURNING
To gain access to the unit, front plates need to be opened as follows:
14×14×
8 HP 10~16 HP
Once the front plates open, the electrical component box can be
accessed. See "5.1.2 To open the electrical component box of the
outdoor unit"on page7.
For service purposes, the push buttons on the main PCB need to be
accessed. To access these push buttons, the electrical component
box cover does not need to be opened. See "6.1.3 To access the
field setting components"on page19.
5.1.2 To open the electrical component box of
the outdoor unit
NOTICE
Do not apply excessive force when opening the electronic
component box cover. Excessive force can deform the
cover, resulting in entering of water to cause equipment
failure.
(1)Maximum length is 1000m. If the total transmission wiring exceeds these limits, it may result in communication error.

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