Piping Installation; Preparing Refrigerant Piping; Refrigerant Piping Requirements - Daikin FAA71BUV1B Installer And User Reference Manual

17 |

Piping installation

17 Piping installation
In this chapter

17.1 Preparing refrigerant piping

17.1.1 Refrigerant piping requirements

Refrigerant piping diameter
Refrigerant piping material
Installer and user reference guide
62
17.1 Preparing refrigerant piping ...................................................................................................................................................
17.1.1 Refrigerant piping requirements ...........................................................................................................................
17.1.2 Refrigerant piping insulation..................................................................................................................................
17.2 Connecting the refrigerant piping..........................................................................................................................................
17.2.1 About connecting the refrigerant piping...............................................................................................................
17.2.2 Precautions when connecting the refrigerant piping............................................................................................
17.2.3 Guidelines when connecting the refrigerant piping..............................................................................................
17.2.4 Pipe bending guidelines .........................................................................................................................................
17.2.5 To flare the pipe end..............................................................................................................................................
17.2.6 To connect the refrigerant piping to the indoor unit............................................................................................
INFORMATION
Also read the precautions and requirements in the
4
precautions" [
CAUTION
Piping MUST be installed according to instructions given in
4
installation" [
compliant with the latest version of ISO14903 can be used.
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.
For piping connections of the indoor unit use the following piping diameters:
Liquid pipe
Ø9.5
▪ Piping material: Phosphoric acid deoxidised seamless copper.
▪ Flare connections: Only use annealed material.
▪ Piping temper grade and thickness:
Outer diameter (Ø)
9.5 mm (3/8")
15.9 mm (5/8")
(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.
8].
62]. Only mechanical joints (e.g. braze+flare connections) that are
Pipe outer diameter (mm)
Temper grade
Annealed (O) ≥0.8 mm
Annealed (O)
"2 General safety
"17 Piping
Gas pipe
Ø15.9
(a)
Thickness (t)
FAA71+100BUV1B
Split system air conditioner
4P654517-1 - 2021.03
62
62
63
63
63
63
64
65
65
66
Ø
t