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8
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Piping installation
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
Installer reference guide
78
1 Connect the liquid stop valve from the outdoor unit to the refrigerant liquid
connection of the indoor unit.
a
b
a Refrigerant liquid connection
b Refrigerant gas connection
2 Connect the gas stop valve from the outdoor unit to the refrigerant gas
connection of the indoor unit.
NOTICE
It is recommended that the refrigerant piping between indoor and outdoor unit is
installed in a ducting or the refrigerant piping is wrapped with finishing tape.
The outdoor unit's internal refrigerant piping has been factory tested for leaks. You
only have to check the outdoor unit's external refrigerant piping.
Before checking the refrigerant piping
Make sure the refrigerant piping is connected between the outdoor unit and the
indoor unit.
Typical workflow
Checking the refrigerant piping typically consists of the following stages:
1
Checking for leaks in the refrigerant piping.
2
Performing vacuum drying to remove all moisture, air or nitrogen from the
refrigerant piping.
If there is a possibility of moisture being present in the refrigerant piping (for
example, water may have entered the piping), first carry out the vacuum drying
procedure below until all moisture has been removed.
INFORMATION
Also read the precautions and requirements in the following chapters:
▪
"2 General safety
▪
"8.1 Preparing refrigerant
4
precautions" [
10]
piping" [
4
71]
ERLA03D + EHFH03S18D
Daikin Altherma 3 R F
4P596806-1C – 2022.09
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