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Piping installation
Installer reference guide
77
EWSAH/X06D
Daikin Altherma 3 WS
4P675764-1 – 2022.04
8.2.4 To fill the central water loop circuit
WARNING
Before, during and after filling carefully check the central water loop circuit for
leakage.
INFORMATION
The materials used in the central water loop circuit of the unit are chemically
resistant to the following anti-freeze fluids:
▪
40 mass% propylene glycol
▪
35 mass% ethylene glycol
NOTICE
Do NOT use the following substances in the central water loop circuit or in the glycol
inhibitors, they can harm the EPDM of the pressure independent control valve
(PICV):
▪
Acids
▪
Lubricants
▪
Oils
▪
Products containing chlorine or fluorine
▪
Alcohols
▪
Petroleum products
▪
Solvents
▪
Lacquers
NOTICE
A field supplied filling kit may come without a filter that protects components in the
central water loop circuit. In this case, it is the responsibility of the installer to install
a filter on the central water loop side of the system.
WARNING
Temperature of the fluid running through the evaporator can become negative. It
MUST be protected against freezing. For more information, see setting [A‑04] in
"Central water loop freezing temperature"
8.2.5 To insulate the central water loop piping
The piping in the complete central water loop circuit MUST be insulated to prevent
reduction of the heating capacity.
Consider that the central water loop circuit piping inside the house can/will
condensate. Foresee adequate insulation for these pipes.
8.3 Connecting water piping
8.3.1 About connecting the water piping
Before connecting the water piping
Make sure the indoor unit is mounted.
