Piping Installation; Preparing Refrigerant Piping; Refrigerant Piping Requirements - Daikin FTXA20C2V1BW Installer's Reference Manual

7 Piping installation

In this chapter

7.1 Preparing refrigerant piping

7.1.1 Refrigerant piping requirements

Refrigerant piping diameter
Refrigerant piping material
CTXA-C(W)(B)(S) + FTXA-C(W)(B)(S)
Daikin room air conditioner
4P518023-15P - 2023.05
7.1 Preparing refrigerant piping ...................................................................................................................................................
7.1.1 Refrigerant piping requirements ...........................................................................................................................
7.1.2 Refrigerant piping insulation..................................................................................................................................
7.2 Connecting the refrigerant piping..........................................................................................................................................
7.2.1 About connecting the refrigerant piping...............................................................................................................
7.2.2 Precautions when connecting the refrigerant piping............................................................................................
7.2.3 Guidelines when connecting the refrigerant piping..............................................................................................
7.2.4 Pipe bending guidelines .........................................................................................................................................
7.2.5 To flare the pipe end..............................................................................................................................................
7.2.6 To connect the refrigerant piping to the indoor unit............................................................................................
7.2.7 To check refrigerant piping joints for leaks after charging refrigerant.................................................................
CAUTION
Piping and joints of a split system shall be made with permanent joints when inside
an occupied space except joints directly connecting the piping to the indoor units.
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.
Use the same diameters as the connections on the outdoor units:
Class
15~42
50
▪ Piping material: phosphoric acid deoxidised seamless copper
▪ Flare connections: Only use annealed material.
▪ Piping temper grade and thickness:
7].
Pipe outer diameter (mm)
Liquid pipe
Ø6.4
Ø6.4
7 Piping installation
|
"2 General safety
Gas pipe
Ø9.5
Ø12.7
Installer reference guide
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