Daikin Altherma EHYHBH05A Series, Installer'S Reference Manual

Page: 106 / 264

8 | Piping installation
Installer reference guide
106
08CA + EHY EHYHBH/X08A + EHYKOMB33AA
Daikin Altherma hybrid heat pump
4P355634-1G – 2022.09
NOTICE
Make sure that the straight brass fitting connections are tightened thoroughly to
prevent leakage. Maximum torque is 30 N∙m.
To connect the water piping for domestic hot water (not applicable for Switzerland)
1 Flush the installation thoroughly to clean.
a b
c
a Domestic hot water outlet
b Cold water inlet
c Pressure relief valve (field supply)
2 Install a pressure relief valve according to local and national regulations (if
required).
3 Connect the hot water connection (Ø15 mm).
4 Connect the main cold water connection (Ø15 mm).
DANGER: RISK OF BURNING/SCALDING
In case of high leaving water setpoints for space heating (either a high fixed setpoint
or a high weather-dependent setpoint at low ambient temperatures), the heat
exchanger of the boiler can be heated up to temperatures higher than 60°C.
In case of a tapping demand, it is possible that a small volume of water tapping
(<0.3 l) has a temperature higher than 60°C.
To connect the water piping for domestic hot water (applicable for Switzerland)
For Switzerland, domestic hot water should be made by a domestic hot water tank.
The domestic hot water tank must be installed with a 3-way valve to the space
heating piping. See the manual of the domestic hot water tank for more details.
8.6.5 To fill the space heating circuit
Before filling the space heating circuit, the gas boiler MUST be installed.
1 Flush the installation thoroughly to clean the circuit.
2 Connect the water supply hose to the drain point (field supply).
3 Power up the gas boiler to see the pressure indication on the boiler display.
4 Make sure that the air purge valves of the gas boiler and the heat pump
module are open (at least 2 turns).
5 Fill the circuit with water until the boiler display indicates a pressure of ±2 bar
(with a minimum of 0.5 bar).
6 Purge air from the water circuit as much as possible.
7 Disconnect the water supply hose from the drain point.