Daikin VRV IV RXMLQ8T7Y1B Series - Installation; Opening the Units; To Open the Outdoor Unit; To Open the Electrical Component Box of the Outdoor Unit

5 Installation
Installation and operation manual
10
RXMLQ8 + RXYLQ10~14T7Y1B*
VRV IV system air conditioner
4P543426-1 – 2018.07
▪ Transmission line section: 0.75~1.25 mm
2
, maximum length is
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 RXYLQ18 by using the RXMLQ8 and
the RXYLQ10.
▪ Minimum circuit ampacity of the RXMLQ8=16.1A
▪ Minimum circuit ampacity of the RXYLQ10=22.0A
Accordingly, the minimum circuit ampacity of the
RXYLQ18=16.1A+22.0A=38.1A
Multiply the above result by 1.1 ⇒ (38.1A×1.1)=
41,91A, so the recommended fuse capacity would be
45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×
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10.
For service purposes, the pushbuttons on the main PCB need to be
accessed. To access these pushbuttons, the electrical component
box cover does not need to be opened. See "6.1.3 To access the
field setting components"on page21.
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.
6×
SW8
NOTICE
When closing the electrical component box cover, make
sure that the sealing material on the lower back side of the
cover is NOT caught and bend towards the inside.
a
b
c
d
e
a Electrical component box cover
b Front side
c Power supply terminal block
d Sealing material
e Moisture and dirt could enter
X Not allowed
O Allowed
5.2 Mounting the outdoor unit
5.2.1 To provide the installation structure
Make sure the unit is installed level on a sufficiently strong base to
prevent vibration and noise.
NOTICE
▪ When the installation height of the unit needs to be
increased, do NOT use stands to only support the
corners.
▪ Stands under the unit must be at least 100mm wide.
≥100 mm
≥100 mm
*
X Not allowed
O Allowed (* = preferred installation)
▪ The height of the foundation must at least be 150 mm from the
floor. In heavy snowfall areas, this height should be increased,
depending on the installation place and condition.