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6 Installation
WARNING
▪ If the power supply has a missing or wrong N-phase,
equipment might break down.
▪ Establish proper earthing. Do NOT earth the unit to a
utility pipe, surge absorber, or telephone earth.
Incomplete earthing may cause electrical shock.
▪ Install the required fuses or circuit breakers.
▪ Secure the electrical wiring with cable ties so that the
cables do NOT come in contact with sharp edges or
piping, particularly on the high-pressure side.
▪ Do NOT use taped wires, stranded conductor wires,
extension cords, or connections from a star system.
They can cause overheating, electrical shock or fire.
▪ Do NOT install a phase advancing capacitor, because
this unit is equipped with an inverter. A phase
advancing capacitor will reduce performance and may
cause accidents.
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
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 (+ decoration panel).
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 decoration panel
Installer and user reference guide
12
comply
with
the
applicable
NOTICE
After installing the decoration panel:
▪ Make sure there is no gap between the unit body and
the decoration panel. Possible consequence: Air
might leak and cause dew drop.
▪ Make sure no oil remains on the plastic parts of the
decoration
panel.
Degradation and damage of plastic parts.
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.
▪ Decoration panel. Install the decoration panel always after
installing the unit.
▪ 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.
A
50~100 mm
a
Ceiling slab
b
Anchor
c
Long nut or turnbuckle
d
Suspension bolt
e
Suspended ceiling
▪ Suspension bolts. Use M8~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.
533
(mm)
a1
Nut (field supply)
a2
Double nut (field supply)
b
Washer (accessories)
c
Hanger bracket (attached to the unit)
Possible
consequence:
a
b
c
d
e
4×
a1
b
c
b
a2
FFA25~60A2VEB(9)
Split system air conditioners
4P550955-4 – 2018.08
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