Daikin EHFH03S18DJ3V — руководство по установке трубопроводов для систем охлаждения [64/204]

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Daikin EHFH03S18DA3V [64/204] Refrigerant piping requirements
7 | Piping installation
Installer reference guide
64
ERLA03DAV3 + EHFH03S18DJ3V
Daikin Altherma 3 R F
4P596806-1A – 2020.05
7 Piping installation
In this chapter
7.1 Preparing refrigerant piping................................................................................................................................................... 64
7.1.1 Refrigerant piping requirements ........................................................................................................................... 64
7.1.2 Refrigerant piping insulation.................................................................................................................................. 65
7.2 Preparing water piping ........................................................................................................................................................... 65
7.2.1 Water circuit requirements ................................................................................................................................... 65
7.2.2 Formula to calculate the expansion vessel pre-pressure...................................................................................... 68
7.2.3 To check the water volume and flow rate............................................................................................................. 68
7.2.4 Changing the pre-pressure of the expansion vessel ............................................................................................. 70
7.2.5 To check the water volume: Examples .................................................................................................................. 70
7.3 Connecting the refrigerant piping.......................................................................................................................................... 71
7.3.1 About connecting the refrigerant piping............................................................................................................... 71
7.3.2 Precautions when connecting the refrigerant piping............................................................................................ 71
7.3.3 Guidelines when connecting the refrigerant piping.............................................................................................. 72
7.3.4 Pipe bending guidelines ......................................................................................................................................... 73
7.3.5 To flare the pipe end.............................................................................................................................................. 73
7.3.6 To braze the pipe end ............................................................................................................................................ 74
7.3.7 Using the stop valve and service port.................................................................................................................... 74
7.3.8 To connect the refrigerant piping to the outdoor unit ......................................................................................... 76
7.3.9 To connect the refrigerant piping to the indoor unit............................................................................................ 76
7.4 Checking the refrigerant piping.............................................................................................................................................. 77
7.4.1 About checking the refrigerant piping................................................................................................................... 77
7.4.2 Precautions when checking the refrigerant piping ............................................................................................... 77
7.4.3 To check for leaks................................................................................................................................................... 77
7.4.4 To perform vacuum drying .................................................................................................................................... 78
7.5 Charging refrigerant ............................................................................................................................................................... 79
7.5.1 About charging refrigerant .................................................................................................................................... 79
7.5.2 About the refrigerant ............................................................................................................................................. 79
7.5.3 Precautions when charging refrigerant ................................................................................................................. 80
7.5.4 To determine the complete recharge amount...................................................................................................... 80
7.5.5 To fix the fluorinated greenhouse gases label....................................................................................................... 80
7.6 Connecting water piping ........................................................................................................................................................ 81
7.6.1 About connecting the water piping ....................................................................................................................... 81
7.6.2 Precautions when connecting the water piping.................................................................................................... 81
7.6.3 To connect the water piping.................................................................................................................................. 82
7.6.4 To connect the recirculation piping....................................................................................................................... 83
7.6.5 To fill the water circuit ........................................................................................................................................... 83
7.6.6 To fill the domestic hot water tank........................................................................................................................ 83
7.6.7 To insulate the water piping .................................................................................................................................. 84
7.1 Preparing refrigerant piping
7.1.1 Refrigerant piping requirements
INFORMATION
Also read the precautions and requirements in the "General safety precautions"
chapter.
Piping material: Phosphoric acid deoxidised seamless copper.
Piping diameter:
Liquid piping Ø6.4mm (1/4")
Gas piping Ø9.5mm (3/8")
Piping temper grade and thickness:

Содержание

Узнайте, как правильно установить трубопроводы для систем охлаждения. Подробные инструкции по подготовке, подключению и проверке трубопроводов.

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