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Piping installation
Installer reference guide
104
ERRA08~12E + EL23E
Daikin Altherma 3 R MT F
4P708478-1 – 2023.05
8.6 Connecting water piping
8.6.1 About connecting the water piping
Before connecting the water piping
Make sure the outdoor and indoor unit are mounted.
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
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, 4 shut-off valves and 1 differential pressure
bypass valve are provided. Mount the shut-off valves on the space heating water
inlets and space heating water outlets. To ensure the minimum flow rate (and
prevent overpressure), install the
differential
pressure bypass valve
on the space
heating water outlet for the
additional zone
.
NOTICE
This unit is designed for operation on 2 temperature zones:
▪
underfloor heating in the
main zone
, this is the zone with the
lowest water
temperature
,
▪
radiators in the
additional zone
, this is the zone with the
highest water
temperature
.
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.