Daikin Altherma 3 H F - Page 68

8 | Piping installation
Installer reference guide
68
EPGA11~16DAV3(7) + EAVZ16S18+23DA6V(7)+9W
Daikin Altherma 3 H F
4P556075-1A – 2021.09
c1c2
a1a2
d2
d1
b1
b2
a1 Space heating additional/direct zone – Water IN (screw connection, 1")
a2 Space heating additional/direct zone – Water OUT (screw connection, 1")
b1 Space heating main/mixed zone – Water IN (screw connection, 1")
b2 Space heating main/mixed zone – Water OUT (screw connection, 1")
c1 DHW – Cold water IN (screw connection, 3/4")
c2 DHW – Hot water OUT (screw connection, 3/4")
d1 Water IN from outdoor unit (screw connection, 1")
d2 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.
NOTICE
Overpressure bypass valve (delivered as accessory). We recommend to install the
overpressure bypass valve in the space heating water circuit.
▪ Mind the minimum water volume when choosing the installation location of the
overpressure bypass valve (at the indoor unit, or at the collector). See "8.1.3To
check the water volume and flow rate"[462].
▪ Mind the minimum flow rate when adjusting the overpressure bypass valve
setting. See "8.1.3To check the water volume and flow rate"[462] and "11.4.1To
check the minimum flow rate"[4157].