Preparing Refrigerant Piping; Refrigerant Piping Requirements; Refrigerant Piping Insulation; Preparing Electrical Wiring - Daikin FCAG35AVEB Installer And User Reference Manual

6 Installation

≥263 mm: In case of installation with fresh air intake kit
100~140 class:
≥256mm: In case of installation with standard panel
≥306mm: In case of installation with fresh air intake kit
≥316mm: In case of installation with self-cleaning panel
a Indoor unit
b Lighting (the figure shows ceiling-mounted lighting, but
recessed lighting is also allowed)
c Air fan
d Static volume (example: table)
▪ A: Minimum distance to the wall. Depends on the air flow
directions towards the wall.
a
≥1500 ≥500
A A
a Air outlet and corners open
b Air outlet closed, corners open (optional blocking pad kit
required)
c Air outlet and corners closed (optional blocking pad kit
required)
▪ B: Minimum and maximum distance to the floor:
▪ Minimum: 2.5 m to avoid accidental touching.
▪ Maximum: Depends on the air flow directions and the capacity
class. Also make sure the "Ceiling height" field setting
corresponds with the actual situation. See Field settings.
If air flow direction...
All-round
(a)
4-way
(a)
3-way
(a) Optional blocking kit required
5.3

Preparing refrigerant piping

5.3.1

Refrigerant piping requirements

INFORMATION
Also read the precautions and requirements in the
"General safety precautions" chapter.
Refrigerant piping material
▪ Piping material: Phosphoric acid deoxidised seamless copper.
▪ Piping temper grade and thickness:
Outer diameter Temper grade
(Ø)
6.4 mm (1/4") Annealed (O)
9.5 mm (3/8")
12.7 mm (1/2")
15.9 mm (5/8")
(a) Depending on the applicable legislation and the unit's
maximum working pressure (see "PS High" on the unit
name plate), larger piping thickness might be required.
Refrigerant piping diameter
Use the same diameters as the connections on the outdoor units:
Model L1 liquid piping
FCAG35A Ø6.4
FCAG50~60A Ø6.4
FCAG71~140A Ø9.5
Installer and user reference guide
12
b c
≥200
A
Then B
FCAG35~71 FCAG100~140
≤3.5 m ≤4.2 m
≤4.0 m ≤4.5 m
≤3.5 m ≤4.2 m
(a)
Thickness (t)
Ø
≥0.8 mm
t
L1 gas piping
Ø9.5
Ø12.7
Ø15.9
5.3.2

Refrigerant piping insulation

▪ Use polyethylene foam as insulation material:
▪ with a heat transfer rate between 0.041 and 0.052 W/mK (0.035
and 0.045 kcal/mh°C)
▪ with a heat resistance of at least 120°C
▪ Insulation thickness
Ambient Humidity
temperature
≤30°C 75% to 80% RH
>30°C ≥80% RH
5.4

Preparing electrical wiring

5.4.1

About preparing electrical wiring

INFORMATION
Also read the precautions and requirements in the
"General safety precautions" chapter.
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 authorized
electrician and must comply with the applicable
legislation.
▪ Make electrical connections to the fixed wiring.
▪ All components procured on the 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:
▪ Mounting the outdoor unit.
▪ Mounting the indoor unit (+ decoration panel).
Minimum thickness
15 mm
20 mm
comply with the applicable
FCAG35~140AVEB
Split system air conditioners
4P473927-1 – 2017.03