Preparing Refrigerant Piping; Refrigerant Piping Requirements; Refrigerant Piping Insulation; Installation - Daikin CTXA15A2V1BW Installation Manual

5 Installation

It is NOT recommended to install the unit in the following places
because it may shorten the life of the unit:
▪ Where the voltage fluctuates a lot
▪ In vehicles or vessels
▪ Where acidic or alkaline vapour is present
▪ In places where a mineral oil mist, spray or vapour may be
present in the atmosphere. Plastic parts may deteriorate and fall
off or cause water leakage.
▪ In places where the unit would be in the path of direct sunlight.
▪ In bathrooms.
▪ Sound sensitive areas (e.g. near a bedroom), so that the
operation noise will cause no trouble.
WARNING
Do NOT place objects below the indoor and/or outdoor unit
that may get wet. Otherwise condensation on the unit or
refrigerant pipes, air filter dirt or drain blockage may cause
dripping, and objects under the unit may get dirty or
damaged.
▪ 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
Note: Make sure that there are no obstacles within 500 mm under
the signal receiver. They may influence reception performance of the
user interface.
4.2

Preparing refrigerant piping

4.2.1

Refrigerant piping requirements

Refrigerant piping diameter
Use the same diameters as the connections on the outdoor units:
Class L1 liquid piping
15~35 Ø6.4
42+50 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)
9.5 mm (3/8")
12.7 mm (1/2")
(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.
Installation manual
4
≥50
(mm)
L1 gas piping
Ø9.5
Ø12.7
(a)
Thickness (t)
Ø
≥0.8 mm
t
4.2.2

Refrigerant piping insulation

Pipe outer diameter Insulation inner
(Ø ) diameter (Ø
p
6.4 mm (1/4") 8~10 mm
9.5 mm (3/8") 12~15 mm
12.7 mm (1/2") 14~16 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 indoor unit

5.1.1

To open the indoor unit

To open the front panel
1 Hold the front panel on both sides and open it.
2 Pull down both locks on the back of the front panel.
3 Open the front panel until the support fits into the fixing tab.
a
a Lock (1 on each side)
b Backside of the front panel
c Fixing tab
d Support
To close the front panel
1 Lift the front panel slightly and remove the support from the
fixing tab.
a Backside of the front panel
b Fixing tab
c Support
2 Close the front panel.
Insulation thickness
) (t)
i
≥10 mm
b
c
d
a
b
c
(C)(F)TXA15~50A2V1B(W)(S)(T)
Daikin room air conditioner
3P482320-7H – 2018.02