17 Piping installation
In this chapter
17.1 Preparing refrigerant piping
17.1.1 Refrigerant piping requirements
Refrigerant piping diameter
Refrigerant piping material
FXDA10~63A2VEB
VRV system air conditioner
4P599621-1A – 2020.10
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
precautions" [
4
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:
Class
10~32
40~63
▪
Piping material: Phosphoric acid deoxidised seamless copper.
▪
Flare connections: Only use annealed material.
▪
Piping temper grade and thickness:
5].
57]. Only mechanical joints (e.g. braze+flare connections) that are
Pipe outer diameter (mm)
Liquid piping
Ø6.4 mm
Ø6.4 mm
17
Piping installation
|
"2 General safety
"17 Piping
Gas piping
Ø9.5 mm
Ø12.7 mm
Installer and user reference guide
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