4 Piping installation
Installation manual
10
EWSAH/X06UDA9W
Daikin Altherma 3 WS
4P675760-1 – 2021.10
a
Water drain valve
b
Central water loop drain valve
NOTICE
Ensure that no water can enter the switch box of the hydro
module.
5
Perform the remaining steps as described in
the hydro module from the unit"
8].
See also
2
To remove the hydro module from the unit [
3.2.3
To close the indoor unit
1
If applicable, reinstall the left side panel.
2
If applicable, reinsert the hydro module.
3
If applicable, close the cover of the main switch box and
reinstall the front panel.
4
Close the cover of the installer switch box.
5
Reconnect the cables to the user interface panel.
6
Reinstall the user interface panel.
7
Reinstall the top panel.
NOTICE
When closing the indoor unit cover, make sure that the
tightening torque does NOT exceed 4.1 N•m.
3.3
Mounting the indoor unit
3.3.1
To install the indoor unit
1
Lift the indoor unit from the pallet and place it on the floor. See
"2.1.2 To handle the indoor unit"
5].
2
Connect the drain hose to the drain. See
10].
3
Slide the unit into position.
4
Adjust the height of the 4 levelling feet of the outer frame to
compensate for floor irregularities. The maximum allowed
deviation is 1°.
≤1°
NOTICE
Do NOT tilt the unit forwards:
1° 1°
0°
NOTICE
To avoid structural damage on unit, ONLY move the unit
when levelling feet are at their lowest position.
NOTICE
For optimum sound reduction, carefully check if there is no
gap between the bottom frame and the floor.
3.3.2
To connect the drain hose to the drain
Condensate can form inside the unit during cooling operation or with
low central water loop temperatures. The top and backup heater
drain pans are connected to a drain hose inside the unit. You must
connect the drain hose to an appropriate drain according to the
applicable legislation. Route the drain hose through the rear panel,
towards the right side of the unit.
4
Piping installation
4.1
Preparing piping
WARNING
It is the responsibility of the installer to ensure the
compatibility of field piping with the used anti-freeze fluid in
the central water loop circuit. Do NOT use Zn-coated
piping, as this may lead to excessive corrosion.
NOTICE
In case of plastic pipes, make sure they are fully oxygen
diffusion tight according to DIN 4726. The diffusion of
oxygen into the piping can lead to excessive corrosion.
NOTICE
All piping MUST be installed according to section G3 of the
Building Regulations.
4.1.1
To check the water volume and flow rate
of the space heating circuit and the
central water loop circuit
Minimum water volume
Check that the total water volume per circuit in the installation is
minimum 20 litre, the internal water volume of the indoor unit NOT
included.
INFORMATION
If a minimum heating load of 1 kW can be guaranteed and
setting [4.B]
Space
heating/cooling
>
Overshoot
(overview field setting [9‑04]) is 4°C, the minimum water
volume can be lowered to 10 litre.
INFORMATION
In critical processes, or in rooms with a high heat load,
extra water might be required.
