4 Piping installation
Installation manual
12
EWSAH/X06UDA9W
Daikin Altherma 3 WS
4P675760-1 – 2021.10
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
"6.4.4 Central water loop freezing temperature"
4.2.3
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.
4.3
Connecting water piping
4.3.1
To connect the water piping
NOTICE
Do NOT use excessive force when connecting the field
piping and make sure the piping is aligned properly.
Deformation of the piping can cause malfunctioning of the
unit.
1
Install the shut off-valve with integrated filter (delivered as
accessory) at the space heating/cooling water inlet.
2
Connect the space heating/cooling IN pipe to the shut-off valve
and the space heating/cooling OUT pipe to the unit.
3
Connect the domestic hot water IN and OUT pipes to the indoor
unit. It is obligatory to use the accessory G3 kit EKUHWG3D(S)
to comply with UK legislation. See
piping for domestic hot water"
12].
a b
c d
b
a
Space heating/cooling water OUT (Ø22 mm)
b
Space heating/cooling water IN (Ø22 mm) and shut-off
valve with integrated filter (accessory)
c
Domestic hot water: hot water OUT (Ø22 mm)
d
Domestic hot water: cold water IN (Ø22 mm)
NOTICE
It is recommended to install shut-off valves to cold water IN
and hot water OUT connections. Shut-off valves are field
supplied.
NOTICE
About the shut-off valve with integrated filter (delivered as
accessory):
▪ The installation of the valve at the water inlet is
mandatory.
▪ Mind the flow direction of the valve.
NOTICE
Expansion vessel.
An expansion vessel (field supply)
MUST be installed on the entering piping before the water
pump within 10 m of the unit.
NOTICE
Install air purge valves at all local high points.
4.3.2
To connect the water piping for domestic
hot water
a
e
e
b
d
c
4‒1 Connect water piping for DHW
a
Pressure reducing valve/pressure relief valve
combination. Water inlet and water outlet 22 mm
connection, discharge piping connection 15 mm
b
Adaptor 22 mm×3/4" Female BSP
c
T-piece 22 mm×22 mm×22 mm
d
Expansion vessel of 18 l or 8 l – 3/4" Male BSP
e
Tundish 15 mm inlet, 22 mm outlet
1
Pre-assemble the adaptor and expansion vessel so that the
expansion vessel is ready for installation.
2
Mount the expansion vessel to the wall.
