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Piping installation
Installer and user reference guide
63
EKVDX32~100A2VEB
VRV system air conditioner
4P664010-1 – 2021.08
16 Piping installation
In this chapter
16.1 Preparing refrigerant piping
16.1.1 Refrigerant piping requirements
INFORMATION
Also read the precautions and requirements in the
7].
CAUTION
Piping MUST be installed according to instructions given in
63]. Only mechanical joints (e.g. braze+flare connections) that are
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.
Refrigerant piping diameter
For piping connections of the indoor unit use the following piping diameters.
Model
Pipe outer diameter (mm)
R410A
R32
(a)
Gas
Liquid
Gas
Liquid
EKVDX32
Ø12.70
Ø6.35
Ø9.52
Ø6.35
EKVDX50
Ø12.70
Ø6.35
Ø12.70
Ø6.35
EKVDX80
Ø15.90
Ø9.52
Ø12.70
Ø6.35
EKVDX100
Ø15.90
Ø9.52
Ø15.90
Ø9.52
(a)
For R32 refrigerant, accessory pipes may be required for certain units. Accessory pipes are
supplied with the unit.
Refrigerant piping material
▪
Piping material:
Phosphoric acid deoxidised seamless copper.
▪
Flare connections:
Only use annealed material.
Содержание EKVDX-A
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