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8
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Piping installation
8.6.2 Precautions when connecting the water piping
8.6.3 To connect the water piping
Installer reference guide
112
INFORMATION
Also read the precautions and requirements in the following chapters:
▪
"2 General safety
▪
"8.5 Preparing water
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
4
water" [
114].
a2
b2
b1
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.
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.
4
precautions" [
10]
4
piping" [
104]
a1
ERLA11~16D + EBVH16SU23D
Daikin Altherma 3 R F
4P655196-1A – 2022.05
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