4 Installation
Installation manual
9
EHBH/X04+08DA*V7
Daikin Altherma 3 R W
4P618951-1 – 2020.03
4.4
Connecting water piping
4.4.1
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 water pipes.
a
b
a
Water inlet
b
Water outlet
2
Screw the indoor unit nuts on the shut-off valves.
3
Connect the field piping on the shut-off valves.
4
In case of connection with the optional domestic hot water tank,
see the installation manual of the domestic hot water tank.
NOTICE
Install air purge valves at all local high points.
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 rate"
6].
▪ Mind the minimum flow rate when adjusting the
overpressure bypass valve setting. See
check the water volume and flow rate"
6] and
"6.2.1 To check the minimum flow rate"
22].
NOTICE
In case an optional domestic hot water tank is installed: 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.
4.4.2
To fill the water circuit
To fill the water circuit, use a field supply filling kit. Make sure you
comply with the applicable legislation.
INFORMATION
Make sure both air purge valves (one on the magnetic filter
and one on the backup heater) are open.
4.4.3
To fill the domestic hot water tank
See the installation manual of the domestic hot water tank.
4.4.4
To insulate the water piping
The piping in the complete water circuit MUST be insulated to
prevent condensation during cooling operation and reduction of the
heating and cooling capacity.
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
least 20 mm to prevent condensation on the surface of the
insulation.
4.5
Connecting the electrical wiring
DANGER: RISK OF ELECTROCUTION
WARNING
ALWAYS use multicore cable for power supply cables.
4.5.1
About electrical compliance
Only for the backup heater of the indoor unit
See
"4.5.4 To connect the backup heater power supply"
10].
4.5.2
To connect the electrical wiring to the
indoor unit
1
Open the switch box so that you can access the back of the
switch box. See
"4.1.1 To open the indoor unit"
2
Route the wiring as follows:
▪ Enter the unit from the bottom.
▪ Route the wiring via the back of the switch box.
▪ Fix the cables with cable ties to the cable tie mountings at
the back of the switch box.
b
a
X2M
X1M
X5M
d
b+c
a
c
a, b, c
Field wiring (see table below)
d
Factory-mounted cable for power supply of backup heater
INFORMATION
When installing field supply or option cables, foresee
sufficient cable length. This will make it possible to open
the switch box and gain access to other components
during service.
Summary of Contents for EHBH08DA6V7
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