Daikin Altherma EHBH08DA6V7 - 7.8.3 To connect the water piping

7 | Installation
Installer reference guide
90
ERGA04~08DAV3(A) + EHBH/X04+08DA*V7
Daikin Altherma 3 R W
4P618958-1 – 2020.03
7.8.3 To connect the water piping
NOTICE
Do NOT use excessive force when connecting the piping. Deformation of the piping
can cause malfunctioning of the unit.
To facilitate service and maintenance, 2 shut-off valves and 1 overpressure bypass
valve are provided. Mount the shut-off valves on the space heating water inlet and
space heating water outlet. To ensure the minimum flow rate (and prevent
overpressure), install the overpressure bypass valve on the space heating water
outlet.
1 Install the shut-off valves on the water pipes.
ab
a Water inlet
b Water outlet
2 Screw the indoor unit nuts on the shut-off valves.
3 Connect the field piping on the shut-off valves.
4 In case of connection with the optional domestic hot water tank, see the
installation manual of the domestic hot water tank.
NOTICE
Install air purge valves at all local high points.
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 "6.4.3To
check the water volume and flow rate"[459].
▪ Mind the minimum flow rate when adjusting the overpressure bypass valve
setting. See "6.4.3To check the water volume and flow rate"[459] and "9.4.1To
check the minimum flow rate"[4183].
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.