Daikin Altherma ERGA04E V3 Series, Installer'S Reference Manual

Page: 104 / 296

8 | Piping installation
Installer reference guide
104
ERGA04~08E + 23E
Daikin Altherma 3 R F
4P629090-1C – 2022.08
Typical workflow
Connecting the water piping typically consists of the following stages:
1 Connecting the water piping to the indoor unit.
2 Connecting the recirculation piping.
3 Connecting the drain hose to the drain.
4 Filling the water circuit.
5 Filling the domestic hot water tank.
6 Insulating the water piping.
8.6.2 Precautions when connecting the water piping
8.6.3 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 differential pressure
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 differential pressure bypass valve on the space
heating water outlet.
1 Install the shut-off valves on the space heating water pipes.
2 Screw the indoor unit nuts on the shut-off valve.
3 Connect the domestic hot water IN and OUT pipes to the indoor unit. It is
obligatory to use the accessory G3 kit EKUHWG3D to comply with UK
legislation. See
"8.6.4 To connect the water piping for domestic hot
water" [
4
106].
b1 b2
a1 a2
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")
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.
▪
However, make sure there is no valve between the pressure relief valve
(delivered with the domestic hot water tank kit) and the DHW tank.