Daikin EKHWET-BV3, Installer'S Reference Manual, Page: 39 / 120

8 | Piping installation
Installer reference guide
39
E120B
R32 Split series – Domestic hot water tank
4P680077-1A – 2022.11
8 Piping installation
In this chapter
8.1 Preparing refrigerant piping ................................................................................................................................................... 39
8.1.1 Refrigerant piping requirements ........................................................................................................................... 39
8.2 Connecting refrigerant piping ................................................................................................................................................ 39
8.2.1 To connect the refrigerant piping to the indoor unit............................................................................................ 39
8.3 Preparing water piping ........................................................................................................................................................... 40
8.3.1 Water circuit requirements ................................................................................................................................... 40
8.4 Connecting water piping ........................................................................................................................................................ 42
8.4.1 About connecting the water piping ....................................................................................................................... 42
8.4.2 Precautions when connecting the water piping.................................................................................................... 42
8.4.3 To connect the water piping.................................................................................................................................. 42
8.4.4 To connect the recirculation piping....................................................................................................................... 43
8.4.5 To fill the domestic hot water tank........................................................................................................................ 43
8.1 Preparing refrigerant piping
8.1.1 Refrigerant piping requirements
INFORMATION
Also read the precautions and requirements in the "2 General safety
precautions" [
4
9].
▪ Piping connections: Only flare and brazed connections are allowed. The indoor
and outdoor units have flare connections. Connect both ends without brazing. If
brazing should be needed, take the guidelines in the outdoor unit installer
reference guide into account.
Also see "7.1.2 Special requirements for R32 units" [ 4 29] for additional
requirements.
For information related with piping length, diameter, connections and insulation
see the Installation manual – Outdoor unit.
8.2 Connecting refrigerant piping
See the installation manual of the outdoor unit for all guidelines, specifications and
installation instructions.
8.2.1 To connect the refrigerant piping to the indoor unit
NOTICE
Make sure the tank stop valves are completely open.
INFORMATION
The stop valves are factory open and the refrigerant circuit of the tank is NOT
charged.
1 Connect the liquid stop valve from the outdoor unit to the refrigerant liquid
stop valve of the indoor unit.