Connecting Water Piping; To Connect The Water Piping; To Connect The Recirculation Piping; To Fill The Water Circuit - Daikin Altherma 3 R F Installation Manual

5.4

Connecting water piping

5.4.1

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
overpressure 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
overpressure 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.
a2 a1
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.
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
check the water volume and flow
▪ Mind the minimum flow rate when adjusting the
overpressure bypass valve setting. See
check the water volume and flow
"8.2.1 To check the minimum flow
NOTICE
Install air purge valves at all local high points.
EBVH/X11+16S18+23DJ
Daikin Altherma 3 R F
4P643599-1B – 2021.10
5.4.2
Prerequisite: Only required if you need recirculation in your system.
1 Remove the top panel from the unit, see
2 Cut out the rubber grommet on top of the unit, and remove the
3 Route the recirculation piping through the grommet and connect
4 Reattach the top panel.
5.4.3
To fill the water circuit, use a field supply filling kit. Make sure you
comply with the applicable legislation.
5.4.4
1 Open every hot water tap in turn to purge air from the system
2 Open the cold water supply valve.
3 Close all water taps after all air is purged.
4 Check for water leaks.
5 Manually operate the field-installed pressure relief valve to
5.4.5
The piping in the complete water circuit MUST be insulated to
prevent condensation during cooling operation and reduction of the
"5.3.1 To
heating and cooling capacity.
rate" [ 4 16].
If the temperature is higher than 30°C and the humidity is higher
than RH 80%, the thickness of the insulation materials should be at
"5.3.1 To
least 20 mm to prevent condensation on the surface of the
rate" [ 4 16] and
insulation.
rate" [ 4 38].
6

6 Electrical installation

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.

To connect the recirculation piping

unit" [ 4 13].
indoor
stop. The recirculation connector is placed below the hole.
it to the recirculation connector.

To fill the water circuit

NOTICE
Pump. To prevent blocking of the pump rotor, commission
the unit as quickly as possible after filling the water circuit.
INFORMATION
Make sure both air purge valves (one on the magnetic filter
and one on the backup heater) are open.

To fill the domestic hot water tank

pipe work.
ensure a free water flow through the discharge pipe.

To insulate the water piping

Electrical installation
DANGER: RISK OF ELECTROCUTION
"4.2.1 To open the
Installation manual
17