6 Electrical installation
Installation manual
17
EBBH/X11+16DF
Daikin Altherma 3 R W
4P643600-1B – 2021.10
a
b
a
Space heating/cooling – Water OUT (screw connection,
1")
b
Space heating/cooling – Water IN (screw connection, 1")
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
"5.3.1 To
check the water volume and flow rate"
[
4
16].
▪ Mind the minimum flow rate when adjusting the
overpressure bypass valve setting. See
"5.3.1 To
check the water volume and flow rate"
[
4
16] and
"8.2.1 To check the minimum flow rate"
[
4
38].
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.
5.4.2
To fill the water circuit
To fill the water circuit, use a field supply filling kit. Make sure you
comply with the applicable legislation.
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.
5.4.3
To fill the domestic hot water tank
See the installation manual of the domestic hot water tank.
5.4.4
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.
6
Electrical installation
DANGER: RISK OF ELECTROCUTION
WARNING
ALWAYS use multicore cable for power supply cables.
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.
6.1
About electrical compliance
Only for the backup heater of the indoor unit
See
"6.3.2 To connect the backup heater power supply"
[
4
20].
6.2
Guidelines when connecting the
electrical wiring
Tightening torques
Indoor unit:
Item
Tightening torque (N•m)
X1M
2.45 ±10%
X2M
0.88 ±10%
X5M
0.88 ±10%
X6M
2.45 ±10%
X7M, X8M
2.45 ±10%
X10M
0.88 ±10%
M4 (earth)
1.47 ±10%
6.3
Connections to the indoor unit
Item
Description
Power supply (main)
See
"6.3.1 To connect the main power
supply"
[
4
19].
Power supply (backup
heater)
See
"6.3.2 To connect the backup heater
power supply"
[
4
20].
Shut-off valve
See
"6.3.3 To connect the shut-off
valve"
[
4
22].
Electricity meters
See
"6.3.4 To connect the electricity
meters"
[
4
22].
Domestic hot water
pump
See
"6.3.5 To connect the domestic hot
water pump"
[
4
22].
Alarm output
See
"6.3.6 To connect the alarm
output"
[
4
23].
Space cooling/heating
operation control
See
"6.3.7 To connect the space cooling/
heating ON/OFF output"
[
4
23].
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