Daikin Altherma 3 GEO, Руководство по установке для специалистов

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7 | Piping installation
Installer reference guide
63
EGSAH/X06+10UDA9W
Daikin Altherma 3 GEO
4P598592-1A – 2019.12
7 Piping installation
7.1 Preparing piping
NOTICE
All piping MUST be installed according to section G3 of the Building Regulations.
7.1.1 Circuit requirements
INFORMATION
Also read the precautions and requirements in the "General safety precautions"
chapter.
NOTICE
In case of plastic pipes, make sure they are fully oxygen diffusion tight according to
DIN 4726. The diffusion of oxygen into the piping can lead to excessive corrosion.
▪ Circuit types. Except for the refrigerant circuit, inside the unit 2 other circuits are
included. For future references: the circuit connected to the bore hole is referred
to as the brine circuit, the other circuit connected to the heating emitters is
referred to as the space heating circuit.
▪ Connecting piping – Legislation. Make all piping connections in accordance with
the applicable legislation and the instructions in the "Installation" chapter,
respecting the water inlet and outlet.
▪ Connecting piping – Force. Do NOT use excessive force when connecting the
piping. Deformation of the piping can cause malfunctioning of the unit.
▪ Connecting piping – Tools. Only use appropriate tooling to handle brass, which is
a soft material. If NOT, pipes will get damaged.
▪ Connecting piping – Air, moisture, dust. If air, moisture or dust gets into the
circuit, problems may occur. To prevent this:
- Only use clean pipes
- Hold the pipe end downwards when removing burrs.
- Cover the pipe end when inserting it through a wall, to prevent dust and/or
particles from entering the pipe.
- Use a decent thread sealant to seal connections.
▪ Closed circuit. Use the indoor unit ONLY in a closed water system for brine circuit
and space heating circuit. Using the system in an open water system will lead to
excessive corrosion.
WARNING
When connecting to an open groundwater system, an intermediate heat exchanger
is required to prevent damage (dirt, freeze ups) to the unit.
▪ Expansion vessel – Water side. To avoid cavitation, install an expansion vessel
(field supply) on the entering pipe before the water pump within 10 m of the
unit.