Piping Installation; Preparing Refrigerant Piping; Refrigerant Piping Requirements - Daikin 3MXM40N2V1B8 Installer's Reference Manual

In this chapter

2MXM68+3(A)MXM+3(A)MXF+4MXM+5MXM

R32 Split series

4P600463-1C - 2020.08

7.1

Preparing refrigerant piping ...................................................................................................................................................

7.1.1

Refrigerant piping requirements ...........................................................................................................................

7.1.2

Refrigerant piping insulation..................................................................................................................................

7.1.3

Refrigerant piping length and height difference ...................................................................................................

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

Connections between outdoor and indoor unit using reducers...........................................................................

7.2.7

Using the stop valve and service port....................................................................................................................

7.2.8

To connect the refrigerant piping to the outdoor unit .........................................................................................

7.3

Checking the refrigerant piping..............................................................................................................................................

7.3.1

About checking the refrigerant piping...................................................................................................................

7.3.2

Precautions when checking the refrigerant piping ...............................................................................................

7.3.3

To check for leaks...................................................................................................................................................

7.3.4

To perform vacuum drying ....................................................................................................................................

INFORMATION

Also read the precautions and requirements in the

4

precautions" [

▪

Piping material: Phosphoric acid deoxidised seamless copper.

▪

Piping diameter:

2MXM68

Liquid piping

Gas piping

3MXM40, 3MXM52, 3MXM68, 3AMXM52, 3MXF52, 3AMXF52, 3MXF68

Liquid piping

Gas piping

4MXM68

Liquid piping

Gas piping

4MXM80

Liquid piping

 5].

2× Ø6.4 mm (1/4")

1× Ø9.5 mm (3/8")

1× Ø12.7 mm (1/2")

3× Ø6.4 mm (1/4")

1× Ø9.5 mm (3/8")

2× Ø12.7 mm (1/2")

4× Ø6.4 mm (1/4")

2× Ø9.5 mm (3/8")

2× Ø12.7 mm (1/2")

4× Ø6.4 mm (1/4")

7

Piping installation

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"2  General safety

Installer reference guide

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