Daikin Altherma 3 HT Installer's Reference Manual page 90

8 | Piping installation
Installer reference guide
90
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
Install air purge valves at all local high points.
Indoor unit
NOTICE
Do NOT use excessive force when connecting the piping. Deformation of the piping
can cause malfunctioning of the unit.
1 Connect the O-rings and shut-off valves to the outdoor unit water connection
pipes of the indoor unit.
2 Connect the outdoor unit field piping to the shut-off valves.
3 Connect the O-rings and shut-off valves to the space heating/cooling water
pipes of the indoor unit.
4 Connect the space heating/cooling field piping of both zones to the shut-off
valves.
5 Connect the domestic hot water in and out pipes to the indoor unit.
c1
c2
a1 Space heating/cooling – Water IN (screw connection, 1")
a2 Space heating/cooling – Water OUT (screw connection, 1")
b1 DHW – Cold water IN (screw connection, 3/4")
b2 DHW – Hot water OUT (screw connection, 3/4")
c1 Water IN from outdoor unit (screw connection, 1")
c2 Water OUT to outdoor unit (screw connection, 1")
NOTICE
It is recommended to install shut-off valves to domestic cold water in and domestic
hot water out connections. These shut-off valves are field supplied.
NOTICE
To avoid damage to the surroundings in case of water leakage, it is recommended to
close the domestic cold water inlet shut‑off valves during periods of absence.
a2 a1
b2 b1
EPRA14~18D + ETVH/X16S18+23E
Daikin Altherma 3 H HT F
4P644737-1A – 2022.03