To Connect The Drain Hose To The Drain; Connecting Water Piping; To Connect The Water Piping; To Fill The Water Circuit - Daikin Altherma 3 H W Serie Manual De Instalación

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4 Installation
4.2.2

To connect the drain hose to the drain

Water coming from the pressure relief valve is collected in the drain
pan. You must connect the drain pan to an appropriate drain
according to the applicable legislation.
1 Connect a drain tube (field supply) to the drain pan connector
as follows:
a
a
Drain pan connector
It is recommended to use a tundish to collect the water.
4.3

Connecting water piping

4.3.1

To connect the water piping

NOTICE
Do NOT use excessive force when connecting the field
piping and make sure the piping is aligned properly.
Deformation of the piping can cause malfunctioning of the
unit.
NOTICE
Do NOT use excessive force when connecting the piping.
Deformation of the piping can cause malfunctioning of the
unit.
1 Connect the O-rings and shut-off valves to the indoor unit water
connections.
2 Connect the outdoor unit field piping on the water IN connection
(a) of the indoor unit.
3 Connect the space heating/cooling field piping on the space
heating water OUT connection (b) of the indoor unit.
b
a
a
Water IN (screw connection, 1")
b
Space heating water OUT (screw connection, 1")
Installation manual
8
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
the water volume and flow
▪ Mind the minimum flow rate when adjusting the
overpressure bypass valve setting. See
water volume and flow
rate" [ 4  22].
minimum flow
NOTICE
Install air purge valves at all local high points.
NOTICE
A pressure relief valve (field supply) with an opening
pressure of maximum 10  bar (=1  MPa) must be installed
on the domestic cold water inlet connection in accordance
with the applicable legislation.
4.3.2

To fill the water circuit

To fill the water circuit, use a field supply filling kit. Make sure you
comply with the applicable legislation.
NOTICE
Make sure both air purge valves (one on the magnetic filter
and one on the backup heater) are open.
All automatic air purge valves must remain open after
commissioning.
4.3.3
To protect the water circuit against
freezing
About freeze protection
Frost can damage the system. To prevent the hydraulic components
from freezing, the software is equipped with special frost protection
functions such as water pipe freeze prevention and drain prevention
(see the installer reference guide) that include the activation of pump
in case of low temperatures.
However, in case of a power failure, these functions cannot
guarantee protection.
Do one of the following to protect the water circuit against freezing:
▪ Add glycol to the water. Glycol lowers the freezing point of the
water.
▪ Install freeze protection valves. Freeze protection valves drain the
water from the system before it can freeze.
NOTICE
If you add glycol to the water, do NOT install freeze
protection valves. Possible consequence: Glycol leaking
out of the freeze protection valves.
"To check
rate" [ 4  5].
"To check the
rate"  [ 4   5] and
"To check the
EABH/X16DF6V+9W
Daikin Altherma 3 H W
4P644479-1 – 2020.12

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