6 Installation
Installer reference guide
10
FDXM25~60F3V1B(9)
Split system air conditioners
4P550955-1 – 2018.07
WARNING
▪ All wiring MUST be performed by an authorised
electrician and MUST comply with the applicable
legislation.
▪ Make electrical connections to the fixed wiring.
▪ All components procured on-site and all electrical
construction MUST comply with the applicable
legislation.
WARNING
ALWAYS use multicore cable for power supply cables.
6
Installation
6.1
Overview: Installation
This chapter describes what you have to do and know on-site to
install the system.
Typical workflow
Installation typically consists of the following stages:
1
Mounting the outdoor unit.
2
Mounting the indoor unit.
3
Connecting the refrigerant piping.
4
Checking the refrigerant piping.
5
Charging refrigerant.
6
Connecting the electrical wiring.
7
Finishing the outdoor installation.
8
Finishing the indoor installation.
INFORMATION
This chapter only describes installation instructions specific
to the indoor unit. For the other instructions, see:
▪ The installation manual of the outdoor unit
▪ The installation manual of the user interface
▪ The installation manual of the optional accessories
6.2
Mounting the indoor unit
6.2.1
Precautions when mounting the indoor
unit
INFORMATION
Also read the precautions and requirements in the
following chapters:
▪ General safety precautions
▪ Preparation
6.2.2
Guidelines when installing the indoor unit
INFORMATION
Optional equipment.
When installing optional equipment,
also read the installation manual of the optional equipment.
Depending on the field conditions, it might be easier to
install the optional equipment first.
▪
Ceiling strength
. Check whether the ceiling is strong enough to
support the weight of the unit. If there is a risk, reinforce the ceiling
before installing the unit.
▪ For existing ceilings, use anchors.
▪ For new ceilings, use sunken inserts, sunken anchors or other
field supplied parts.
▪
Suspension bolts.
Use W3/8 M10 suspension bolts for
installation. Attach the hanger bracket to the suspension bolt. Fix it
securely using a nut and washer from the upper and lower sides
of the hanger bracket.
▪
Ceiling opening size.
Make sure the ceiling opening is within the
following limits:
d
e
A
B
f
620
500
f
a1
b
b
a2
c
4×
Class
A (mm)
B (mm)
35
740
790
60
1140
1190
a1
Nut (field supply)
a2
Double nut (field supply)
b
Washer (accessories)
c
Hanger bracket
d
Control box
e
Suspension bolt pitch
f
Overall dimension
▪
External static pressure.
Refer to technical documentation to
ensure that the unit's external static pressure is not exceeded.
▪
Ceiling opening.
(Ceiling with opening for installation)
1
Pass all pipes and wiring through the unit's piping and wiring
holes.
2
Make sure that the ceiling is level.
▪
Installation example:
b
a
c
e
d
a
Anchor bolt
b
Ceiling slab
c
Long nut or turn-buckle
d
Suspension bolt
e
Indoor unit
▪
Install suction cover and air filter (accessory)
In case of
bottom suction:
3
Remove the suction cover.
