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6 Electrical installation
Installation manual
11
EHBH/X04+08EA/EJ6V+9W
Daikin Altherma 3 R W
4P629081-1A – 2020.08
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"
▪ Mind the minimum flow rate when adjusting the
overpressure bypass valve setting. See
check the water volume and flow rate"
10] and
"8.2.1 To check the minimum flow rate"
32].
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.
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.
6.1
About electrical compliance
Only for the backup heater of the indoor unit
"6.3.2 To connect the backup heater power supply"
6.2
Guidelines when connecting the
electrical wiring
Tightening torques
Item
Tightening torque (N•m)
M4 (X1M)
1.2~1.5
M4 (earth)
6.3
Connections to the indoor unit
Item
Description
Power supply (main)
"6.3.1 To connect the main power
Power supply (backup
heater)
"6.3.2 To connect the backup heater
Shut-off valve
"6.3.3 To connect the shut-off
15].
Electricity meters
"6.3.4 To connect the electricity
Domestic hot water
pump
"6.3.5 To connect the domestic hot
Alarm output
16].
Space cooling/heating
operation control
"6.3.7 To connect the space cooling/
Changeover to
external heat source
control
"6.3.8 To connect the changeover to
Power consumption
digital inputs
18].
Safety thermostat
thermostat (normally closed
contact)"
Smart Grid
Room thermostat
(wired or wireless)
See:
▪ Installation manual of the
wireless
room thermostat
▪ Installation manual of the
wired
room
thermostat
(digital
or
analogue) + multi-zoning base
unit
▪ Connection of the wired room
thermostat (digital or analogue)
to the multi-zoning base unit
▪ Connection of the multi-zoning
base unit to the indoor unit
▪ For cooling/heating operation,
you also need option EKRELAY1
▪ Addendum
book
for
optional
equipment
Wires: 0.75 mm²
Maximum running current: 100 mA
For the main zone:
▪ [2.9]
Control
▪ [2.A]
Thermostat type
For the additional zone:
▪ [3.A]
Thermostat type
▪ [3.9] (read-only)
Control