Preparation; Preparing The Installation Site; Installation Site Requirements Of The Indoor Unit; Preparing Refrigerant Piping - Daikin ATXF25A5V1BB Manuel D'installation

4 Preparation

Operation mode
(a)
Heating ▪ Outdoor temperature: –15~24°C DB
▪ Indoor temperature: 10~30°C DB
(a)
Drying ▪ Outdoor temperature: –10~46°C DB
▪ Indoor temperature: 18~32°C DB
▪ Indoor humidity: ≤80%
(a)
A safety device might stop the operation of the system if the unit
runs outside its operation range.
(b)
Condensation and water dripping might occur if the unit runs
outside its operation range.
4 Preparation
4.1

Preparing the installation site

WARNING
The appliance shall be stored in a room without
continuously operating ignition sources (example: open
flames, an operating gas appliance or an operating electric
heater).
4.1.1 Installation site requirements of the
indoor unit
INFORMATION
The sound pressure level is less than 70 dBA.
▪ Air flow. Make sure nothing blocks the air flow.
▪ Drainage. Make sure condensation water can be evacuated
properly.
▪ Wall insulation. When conditions in the wall exceed 30°C and a
relative humidity of 80%, or when fresh air is inducted into the
wall, then additional insulation is required (minimum 10 mm
thickness, polyethylene foam).
▪ Wall strength. Check whether the wall or the floor is strong
enough to support the weight of the unit. If there is a risk, reinforce
the wall or the floor before installing the unit.
▪ Spacing. Install the unit at least 1.8 m from the floor and keep the
following requirements in mind for distances from the walls and
the ceiling:
≥50
4.2

Preparing refrigerant piping

4.2.1

Refrigerant piping requirements

NOTICE
The piping and other pressure-containing parts shall be
suitable for refrigerant. Use phosphoric acid deoxidised
seamless copper for refrigerant.
▪ Foreign materials inside pipes (including oils for fabrication) must
be ≤30 mg/10 m.
Refrigerant piping diameter
Use the same diameters as the connections on the outdoor units:
Installation manual
4
Operation range
≥50
(mm)
Class L1 liquid piping
20~35 Ø6.4
Refrigerant piping material
▪ Piping material: Phosphoric acid deoxidised seamless copper.
▪ Flare connections: Only use annealed material.
▪ Piping temper grade and thickness:
Outer diameter Temper grade
(Ø)
6.4 mm (1/4") Annealed (O)
(a)
Depending on the applicable legislation and the maximum
working pressure of the unit (see "PS High" on the unit name
plate), larger piping thickness might be required.
4.2.2

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
Pipe outer diameter Insulation inner
(Ø ) diameter (Ø
p
6.4 mm (1/4") 8~10 mm
Ø Ø
i i
Ø Ø
p p
t
If the temperature is higher than 30°C and the humidity is higher
than RH 80%, the thickness of the insulation materials should be at
least 20 mm to prevent condensation on the surface of the
insulation.
5

Installation

5.1

Opening the units

5.1.1

To open the indoor unit

To remove the front panel
1 Hold the front panel by the panel tabs on both sides and open
it.
a Panel tabs
2 Remove the front panel by sliding it to the left or the right and
pulling it toward you.
Result: The front panel shaft on 1 side will be disconnected.
3 Disconnect the front panel shaft on the other side in the same
manner.
L1 gas piping
Ø9.5
(a)
Thickness (t)
Ø
≥0.8 mm
t
Insulation thickness
) (t)
i
≥10 mm
a
ATXF25~35A5V1B
Daikin room air conditioner
3P519299-6D – 2019.02