Piping Installation; Preparing Refrigerant Piping; Refrigerant Piping Requirements - Daikin ERLA03DAV3 Installer's Reference Manual
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Also See for ERLA03DAV3:
- Installer's reference manual (196 pages) ,
- Installer's reference manual (212 pages)
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Piping installation
7 Piping installation
In this chapter
7.1 Preparing refrigerant piping
7.1.1 Refrigerant piping requirements
Installer reference guide
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7.1
Preparing refrigerant piping ...................................................................................................................................................
7.1.1
Refrigerant piping requirements ...........................................................................................................................
7.1.2
Refrigerant piping insulation..................................................................................................................................
7.2
Preparing water piping ...........................................................................................................................................................
7.2.1
Water circuit requirements ...................................................................................................................................
7.2.2
Formula to calculate the expansion vessel pre-pressure......................................................................................
7.2.3
To check the water volume and flow rate.............................................................................................................
7.2.4
Changing the pre-pressure of the expansion vessel .............................................................................................
7.2.5
To check the water volume: Examples ..................................................................................................................
7.3
Connecting the refrigerant piping..........................................................................................................................................
7.3.1
About connecting the refrigerant piping...............................................................................................................
7.3.2
Precautions when connecting the refrigerant piping............................................................................................
7.3.3
Guidelines when connecting the refrigerant piping..............................................................................................
7.3.4
Pipe bending guidelines .........................................................................................................................................
7.3.5
To flare the pipe end..............................................................................................................................................
7.3.6
To braze the pipe end ............................................................................................................................................
7.3.7
Using the stop valve and service port....................................................................................................................
7.3.8
To connect the refrigerant piping to the outdoor unit .........................................................................................
7.3.9
To connect the refrigerant piping to the indoor unit............................................................................................
7.4
Checking the refrigerant piping..............................................................................................................................................
7.4.1
About checking the refrigerant piping...................................................................................................................
7.4.2
Precautions when checking the refrigerant piping ...............................................................................................
7.4.3
To check for leaks...................................................................................................................................................
7.4.4
To perform vacuum drying ....................................................................................................................................
7.5
Charging refrigerant ...............................................................................................................................................................
7.5.1
About charging refrigerant ....................................................................................................................................
7.5.2
About the refrigerant .............................................................................................................................................
7.5.3
Precautions when charging refrigerant .................................................................................................................
7.5.4
To determine the complete recharge amount......................................................................................................
7.5.5
To fix the fluorinated greenhouse gases label.......................................................................................................
7.6
Connecting water piping ........................................................................................................................................................
7.6.1
About connecting the water piping .......................................................................................................................
7.6.2
Precautions when connecting the water piping....................................................................................................
7.6.3
To connect the water piping..................................................................................................................................
7.6.4
To connect the recirculation piping.......................................................................................................................
7.6.5
To fill the water circuit ...........................................................................................................................................
7.6.6
To fill the domestic hot water tank........................................................................................................................
7.6.7
To insulate the water piping ..................................................................................................................................
INFORMATION
Also read the precautions and requirements in the "General safety precautions"
chapter.
▪
Piping material: Phosphoric acid deoxidised seamless copper.
▪
Piping diameter:
Liquid piping
Gas piping
▪
Piping temper grade and thickness:
Ø6.4 mm (1/4")
Ø9.5 mm (3/8")
ERLA03DAV3 + EHFZ03S18DJ3V
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Daikin Altherma 3 R F
4P596821-1A - 2020.05
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