Daikin 4MXM80N2V1B9 User Manual

7 | Piping installation
Installer reference guide
33
2MXM68+3(A)MXM+3(A)MXF+4MXM+5MXM
R32 Split series
4P600463-1C – 2020.08
7 Piping installation
In this chapter
7.1 Preparing refrigerant piping................................................................................................................................................... 33
7.1.1 Refrigerant piping requirements ........................................................................................................................... 33
7.1.2 Refrigerant piping insulation.................................................................................................................................. 34
7.1.3 Refrigerant piping length and height difference ................................................................................................... 35
7.2 Connecting the refrigerant piping.......................................................................................................................................... 36
7.2.1 About connecting the refrigerant piping............................................................................................................... 36
7.2.2 Precautions when connecting the refrigerant piping............................................................................................ 36
7.2.3 Guidelines when connecting the refrigerant piping.............................................................................................. 38
7.2.4 Pipe bending guidelines ......................................................................................................................................... 38
7.2.5 To flare the pipe end.............................................................................................................................................. 39
7.2.6 Connections between outdoor and indoor unit using reducers........................................................................... 39
7.2.7 Using the stop valve and service port.................................................................................................................... 42
7.2.8 To connect the refrigerant piping to the outdoor unit ......................................................................................... 43
7.3 Checking the refrigerant piping.............................................................................................................................................. 44
7.3.1 About checking the refrigerant piping................................................................................................................... 44
7.3.2 Precautions when checking the refrigerant piping ............................................................................................... 44
7.3.3 To check for leaks................................................................................................................................................... 45
7.3.4 To perform vacuum drying .................................................................................................................................... 45
7.1 Preparing refrigerant piping
7.1.1 Refrigerant piping requirements
INFORMATION
Also read the precautions and requirements in the "2 General safety
precautions"[45].
▪ Piping material: Phosphoric acid deoxidised seamless copper.
▪ Piping diameter:
2MXM68
Liquid piping 2× Ø6.4mm (1/4")
Gas piping 1× Ø9.5mm (3/8")
1× Ø12.7mm (1/2")
3MXM40, 3MXM52, 3MXM68, 3AMXM52, 3MXF52, 3AMXF52, 3MXF68
Liquid piping 3× Ø6.4mm (1/4")
Gas piping 1× Ø9.5mm (3/8")
2× Ø12.7mm (1/2")
4MXM68
Liquid piping 4× Ø6.4mm (1/4")
Gas piping 2× Ø9.5mm (3/8")
2× Ø12.7mm (1/2")
4MXM80
Liquid piping 4× Ø6.4mm (1/4")

Daikin 4MXM80N2V1B9 Specifications

General

Brand	Daikin
Model	4MXM80N2V1B9
Category	Air Conditioner
Language	English