HXY48TAVJU
VRV System indoor unit
3P616151-1A – 2021.12
Installation and operation manual
11
6.3.2.
Overview of electrical connections on the indoor unit
The following illustration shows the required field wiring.
a Dedicated power supply for the indoor unit
b HXY48
c User interface
d Optional user interface
7.
Installation
Before installing, first read the instructions of previous chapter.
7.1.
Mounting the indoor unit
7.1.1.
To install the indoor unit
1
Remove the accessories from the unit, see instructions in
chapter "3.1.2. To remove the accessories from the indoor unit"
on page 4.
2
Install indoor unit as follows.
INFORMATION
The following illustration is an example and may NOT
match your system layout.
For details see "13.2. Wiring diagram" on page 39.
Item
Description
Wiring
Maximum
running
current
High voltage wiring (High voltage bundle)
1
Indoor unit power supply
2+GND
(a)
(a) Refer to name plate on the indoor unit.
2
Malfunction output
2
0.3 A
(b)
(b) Minimum cable section 0.75 mm² (AWG18).
3
Operation ON/OFF output
2
0.3 A
(b)
4
Cooling/heating output
2
0.3 A
(b)
Low voltage wiring (Low voltage bundle)
5
Operation ON signal*
2
(b)
6
Operation OFF signal*
2
(b)
7
Indoor/outdoor transmission
2
(c)
(c) Cable section 0.75 mm² (AWG18).
*
Demand PCB kit (EKRP1AHTA) is required.
8
User interface transmission
2
(c)
b
a
5
2
3
4
1
7
d
c
8
6
INFORMATION
Installation shall be done by an installer, the choice of
materials and installation shall comply with the applicable
legislation.
WARNING
Tear apart and throw away plastic packaging bags so that
children will not play with them. Children playing with
plastic bags face danger of death by suffocation.
CAUTION
Do NOT grasp the piping to lift the indoor unit.
NOTE
Please install following the spacing installation guidelines
as described in "6.1.1. Installation site requirements of the
indoor unit" on page 7.
60kg
1
2
4x
1
2
3
3
2x
4
3
5
6
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