5 Installation
Installation and operation manual
7
RKXYQ5T7Y1B
VRV IV compressor unit for indoor installation
4P408443-1 – 2015.07
Maximum wiring length
(= distance between compressor
unit and furthest indoor unit)
300 m
Total wiring length
(= distance between compressor
unit and all indoor units, and
between compressor unit and
heat exchanger unit)
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 compressor unit
DANGER: RISK OF BURNING
DANGER: RISK OF ELECTROCUTION
1
Remove the service cover of the compressor unit.
2
If you want to make field settings, remove the inspection cover.
3
If you want to connect electrical wiring, remove the switch box
cover.
2
3
1
5×
4×
5.2
Mounting the compressor unit
5.2.1
Guidelines when installing the
compressor unit
Check the strength and level of the installation ground so that the
unit will not cause any operating vibration or noise. If the vibration
might be transmitted to the building, use a vibration-proof rubber
(field supply).
You can install the compressor unit directly on the floor or on a
structure.
▪
On the floor.
You do NOT have to fix the unit with anchor bolts.
▪
On a structure.
Fix the unit securely with anchor bolts, nuts and
washers (field supply) to the structure. The foundation (steel beam
frame or concrete) must be larger than the grey marked area.
a
≤
480
516
≥666
426
≥640
(mm)
Minimum foundation
a
Anchor point (4×)
INFORMATION
The recommended height of the upper protruding part of
the bolts is 20 mm.
20 mm
5.3
Connecting the refrigerant piping
DANGER: RISK OF BURNING
5.3.1
Using the stop valve and service port
To handle the stop valve
▪ Make sure to keep all stop valves open during operation.
▪ The stop valve is factory closed.
To open the stop valve
1
Remove the stop valve cover.
2
Insert a hexagon wrench into the stop valve and turn the stop
valve counterclockwise.
3
When the stop valve cannot be turned any further, stop turning.
Result:
The valve is now open.
To fully open the Ø19.1 stop valve, turn the hexagonal wrench until a
torque between 27 and 33 N•m is achieved.
Inadequate torque may cause leakage of refrigerant and breakage of
the stop valve cap.
1
2
3
4
