8
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Piping installation
Installer reference guide
117
ERRA08~12E + ELVH/23E
Daikin Altherma 3 R MT F
4P708474-1 – 2023.05
8.6.2 Precautions when connecting the water piping
INFORMATION
Also read the precautions and requirements in the following chapters:
▪
"2 General safety precautions"
▪
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.
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")
4
Install the following components (field supply) on the cold water inlet of the
DHW tank:
g
c
b1
b2
d
a
*e
*f
a
