Daikin ETVZ16S18EA6V Installer's Reference Manual page 76

8 | Piping installation
Installer reference guide
76
c2 c1
d1
d2
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
check the water volume and flow
▪
Mind the minimum flow rate when adjusting the overpressure bypass valve
setting. See "8.1.3 To check the water volume and flow
"11.4.1 Minimum flow
a2 a1
4
rate" [ 71].
4
rate" [ 207].
EPRA14~18DAV3+W1 + ETVZ16S18+23EA6V+9W
"8.1.3 To
rate" [ 4 71] and
Daikin Altherma 3 H HT F
4P644739-1 – 2021.02