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8 Piping installation
In this chapter
8.1 Preparing refrigerant piping
8.1.1 Refrigerant piping requirements
ERGA04~08EAV3+V3A+V37 + EHSH/X(B)04+08P30+50EF
Daikin Altherma 3 R ECH₂O
4P678716-1A - 2022.07
8.1
Preparing refrigerant piping ...................................................................................................................................................
8.1.1
Refrigerant piping requirements ...........................................................................................................................
8.1.2
Refrigerant piping insulation..................................................................................................................................
8.2
Connecting the refrigerant piping..........................................................................................................................................
8.2.1
About connecting the refrigerant piping...............................................................................................................
8.2.2
Precautions when connecting the refrigerant piping............................................................................................
8.2.3
Guidelines when connecting the refrigerant piping..............................................................................................
8.2.4
Pipe bending guidelines .........................................................................................................................................
8.2.5
To flare the pipe end..............................................................................................................................................
8.2.6
To braze the pipe end ............................................................................................................................................
8.2.7
Using the stop valve and service port....................................................................................................................
8.2.8
To connect the refrigerant piping to the outdoor unit .........................................................................................
8.2.9
To connect the refrigerant piping to the indoor unit............................................................................................
8.3
Checking the refrigerant piping..............................................................................................................................................
8.3.1
About checking the refrigerant piping...................................................................................................................
8.3.2
Precautions when checking the refrigerant piping ...............................................................................................
8.3.3
To check for leaks...................................................................................................................................................
8.3.4
To perform vacuum drying ....................................................................................................................................
8.4
Charging refrigerant ............................................................................................................................................................... 100
8.4.1
About charging refrigerant .................................................................................................................................... 100
8.4.2
Precautions when charging refrigerant ................................................................................................................. 101
8.4.3
To fix the fluorinated greenhouse gases label....................................................................................................... 101
8.5
Preparing water piping ........................................................................................................................................................... 101
8.5.1
Water circuit requirements ................................................................................................................................... 101
8.5.2
To check the water volume and flow rate............................................................................................................. 104
8.6
Connecting water piping ........................................................................................................................................................ 105
8.6.1
About connecting the water piping ....................................................................................................................... 105
8.6.2
Precautions when connecting the water piping.................................................................................................... 106
8.6.3
To connect the water piping.................................................................................................................................. 106
8.6.4
To connect a pressure vessel ................................................................................................................................. 109
8.6.5
To fill the heating system ....................................................................................................................................... 109
8.6.6
To fill the heat exchanger inside the storage tank ................................................................................................ 111
8.6.7
To fill the storage tank ........................................................................................................................................... 111
8.6.8
To insulate the water piping .................................................................................................................................. 112
INFORMATION
Also read the precautions and requirements in the
4
precautions" [
Also see
"7.1.4 Special requirements for R32
requirements.
▪
Piping length: See
"7.1.3 Installation site requirements of the indoor
▪
Piping material: phosphoric acid deoxidised seamless copper
▪
Piping connections: Only flare and brazed connections are allowed. The indoor
and outdoor units have flare connections. Connect both ends without brazing. If
brazing should be needed, take the guidelines in the outdoor unit installer
reference guide into account.
▪
Flare connections: Only use annealed material.
▪
Piping diameter:
10].
8
Piping installation
|
"2 General safety
4
units" [
70] for additional
unit" [
Installer reference guide
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