Daikin EHBX08DA9W - Charging Refrigerant; About Charging Refrigerant; Precautions When Charging Refrigerant; To Determine the Additional Refrigerant Amount

7 Installation
Installer reference guide
40
ERGA04~08DAV3(A) + EHBH/X04+08DA
Daikin Altherma – Low temperature split
4P496758-1 – 2017.12
ab
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 "6.4.3 To
check the water volume and flow rate"on page26.
▪ Mind the minimum flow rate when adjusting the
overpressure bypass valve setting. See "6.4.3 To
check the water volume and flow rate"on page26 and
"9.4.1To check the minimum flow rate"on page79.
NOTICE
To avoid damage to the surroundings in case of water
leakage, it is recommended to close the domestic cold
water inlet shut‑off valves during periods of absence.
NOTICE
▪ A drain device and pressure relief device must be
installed on the cold water inlet connection of the
domestic hot water cylinder.
▪ To avoid back siphonage, it is recommended to install a
non-return valve on the water inlet of the domestic hot
water tank in accordance with the applicable legislation.
▪ It is recommended to install a pressure reducing valve
on the cold water inlet in accordance with the
applicable legislation.
▪ An expansion vessel should be installed on the cold
water inlet in accordance with the applicable legislation.
▪ It is recommended to install the pressure relief valve on
a higher position than the top of the domestic hot water
tank. Heating of the domestic hot water tank causes
water to expand and without pressure relief valve the
water pressure inside the tank can rise above the tank
design pressure. Also the field installation (piping,
tapping points, etc.) connected to the tank is subjected
to this high pressure. To prevent this, a pressure
relieve valve needs to be installed. The overpressure
prevention depends on the correct operation of the field
installed pressure relief valve. If this is NOT working
correctly, overpressure will deform the tank and water
leakage may occur. To confirm good operation, regular
maintenance is required.
7.8.4 To connect the drain hose to the drain
Water coming from the pressure relief valve is collected in the drain
pan. You must 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.
7.8.5 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.
7.8.6 To fill the domestic hot water tank
For installation instructions, see the installation manual of the
domestic hot water tank.
Final English - Tanslations in progress