Preparing Refrigerant Piping; Refrigerant Piping Requirements; Refrigerant Piping Length And Height Difference; Refrigerant Piping Insulation - Daikin RXF50B2V1B Installation Manual

4 Installation

3.2

Preparing refrigerant piping

3.2.1

Refrigerant piping requirements

▪ Piping material: Phosphoric acid deoxidised seamless copper.
▪ Piping diameter:
Liquid piping
Gas piping
▪ Piping temper grade and thickness:
Outer diameter Temper grade
(Ø)
6.4 mm (1/4") Annealed (O)
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.
3.2.2 Refrigerant piping length and height
difference
What?
Maximum allowable pipe length
Minimum allowable pipe length
Maximum allowable height distance
3.2.3

Refrigerant piping insulation

Pipe outer diameter Insulation inner
(Ø ) diameter (Ø
p
6.4 mm (1/4") 8~10 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.
4 Installation
4.1

Mounting the outdoor unit

4.1.1

To provide the installation structure

Prepare 4 sets of M8 or M10 anchor bolts, nuts and washers (field
supply).
Installation manual
6
Ø6.4 mm (1/4")
Ø12.7 mm (1/2")
(a)
Thickness (t)
Ø
≥0.8 mm
t
Distance
30 m
3 m
20 m
Insulation thickness
) (t)
i
≥10 mm
(mm)
In any case, provide at least 300 mm of free space below the unit.
Additionally, make sure the unit is positioned at least 100 mm above
the maximum expected level of snow. In this case, it is
recommended to construct a pedestal.
(mm)
a Maximum snowfall height
If the unit is installed on brackets fixed to the wall, install the unit as
follows:
RXF50~71(A)(B)2V1B + RXP50~71L2V1B
R32 split series
3P512025-4C – 2018.01