Installation; Overview: Installation; Opening The Units; To Open The Outdoor Unit - Daikin RYYQ8T7Y1B Installer And User Reference Manual

Model
RYYQ34/RXYQ34
RYYQ36/RXYQ36
RYYQ38/RXYQ38
RYYQ40/RXYQ40
RYYQ42/RXYQ42
RYYQ44/RXYQ44
RYYQ46/RXYQ46
RYYQ48/RXYQ48
RYYQ50/RXYQ50
RYYQ52/RXYQ52
RYYQ54/RXYQ54
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
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
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.
6

Installation

6.1

Overview: Installation

This chapter describes what you have to do and know on-site to
install the system.
It contains information about:

▪ Opening the units

▪ Mounting the outdoor unit
▪ Connecting the refrigerant piping
▪ Checking the refrigerant piping
▪ Charging refrigerant
▪ Connecting the electrical wiring
RYYQ+RYMQ+RXYQ8~20T7Y1B
VRV IV system air conditioner
4P370475-1C – 2016.11
Minimum Recommended
circuit fuses
ampacity
66.0 A 80 A
70.0 A 80 A
76.0 A 100 A
81.0 A 100 A
84.0 A 100 A
86.0 A 100 A
89.0 A 100 A
93.0 A 125 A
97.0 A 125 A
101.0 A 125 A
105.0 A 125 A
2
, maximum length is
6.2 Opening the units
6.2.1

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:
8~12 HP 14~20 HP
14× 14×
Once the front plates open, the electrical component box can be
accessed. See "6.2.2 To open the electrical component box of the
outdoor unit" on page 21.
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
field setting components" on page 40.
6.2.2 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.
8~12 HP
2×
SW8
14~20 HP
6×
6 Installation
"7.2.3 To access the
SW8
Installer and user reference guide
21