Piping Installation; Preparing Refrigerant Piping; Refrigerant Piping Requirements - Daikin FHA50AVEB98 User Reference Manual

17 Piping installation

In this chapter

17.1 Preparing refrigerant piping

17.1.1 Refrigerant piping requirements

Refrigerant piping diameter
Refrigerant piping material
FHA-A(9)
Split system air conditioner
4P708119-1 – 2022.11
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............................................................................................
CAUTION
Piping MUST be installed according to instructions given in
installation" [ 4
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 piping.
INFORMATION
Also read the precautions and requirements in the
4
precautions" [
▪ Foreign materials inside pipes (including oils for fabrication) must be
≤30 mg/10 m.
For piping connection of the indoor unit, use the following piping diameters:
Class
35
50+60
71~140
▪ Piping material: phosphoric acid deoxidised seamless copper
▪ Flare connections: Only use annealed material.
▪ Piping temper grade and thickness:
59]. Only mechanical joints (e.g. braze+flare connections) that are
7].
Pipe outer diameter (mm)
Liquid pipe
Ø6.4
Ø6.4
Ø9.5
17 Piping installation
|
"17 Piping
"2 General safety
Gas pipe
Ø9.5
Ø12.7
Ø15.9
Installer and user reference guide
59
59
60
60
60
61
62
62
62
63
59