4 Installation
Installation manual
9
EHBH/X04+08DA
Daikin Altherma – Low temperature split
4P495266-1 – 2017.06
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
"3.2.1 To
check the water volume and flow rate" on page 6
.
▪ Mind the minimum flow rate when adjusting the
overpressure bypass valve setting. See
"3.2.1 To
check the water volume and flow rate" on page 6
and
"6.2.1 To check the minimum flow rate" on page 20
.
4.4.2
To connect the drain hose to the drain
Water coming from the pressure relief valve is collected in the drain
pan. It is recommended to connect the drain pan to an appropriate
drain according to the applicable legislation.
1
Connect a drain tube (field supply) to the drain pan connector
as follows:
a
a
Drain pan connector
It is recommended to use a tundish to collect the water.
4.4.3
To fill the water circuit
To fill the water circuit, use a field supply filling kit. Make sure you
comply with the applicable legislation.
4.4.4
To fill the domestic hot water tank
For installation instructions, see the installation manual of the
domestic hot water tank.
4.4.5
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" on
page 10
.
4.5.2
To connect the electrical wiring on 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" on page 6
.
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.
Routing
Possible cables (depending on unit type
and installed options)
a
Low voltage
▪ Preferential power supply contact
▪ User interface used as room thermostat
(option)
▪ Power consumption digital inputs (field
supply)
▪ Outdoor ambient temperature sensor
(option)
▪ Indoor
ambient
temperature
sensor
(option)
▪ Electrical meters (field supply)
▪ Safety thermostat (field supply)
b
High voltage power
supply
▪ Interconnection cable
▪ Normal kWh rate power supply
▪ Preferential kWh rate power supply
