Daikin EPRA08EAV3, Installer'S Reference Manual

Page: 89 / 292

8 | Piping installation
Installer reference guide
89
EPRA08~W1 + ETVH/9W
Daikin Altherma 3 H MT F
4P634886-1 – 2021.03
b1 b2
a1 a2
c2
c1
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.
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
84].
▪
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 84] and
"11.4.1 Minimum flow rate" [
4
224].
NOTICE
Install air purge valves at all local high points.
NOTICE
A pressure relief valve (field supply) with an opening pressure of maximum 10 bar
(=1 MPa) must be installed on the domestic cold water inlet connection in
accordance with the applicable legislation.