To Fill The Space Heating Circuit - Daikin Altherma H Hybrid EJHA04AAV3 Installer's Reference Manual

10 | Installation

10.6.6 To fill the space heating circuit

In case of dedicated gas boiler
Installer reference guide
98
Possibility 2
b2
INFORMATION
Air purge valves. In case of EHY2KOMB28+32AA gas boiler, the following air purge
valves are possible:
▪
Manual air purges valves on the shut-off valves (option EKBALLV1).
▪
Manual air purge valve inside the EHY2KOMB28+32AA gas boiler.
▪
Manual or automatic field-supplied air purge valves.
▪
Note: Automatic air purge valves are NOT allowed if glycol is used.
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 fill/drain point.
Note: The fill/drain point can be:
▪ Field supplied
▪ Part of option EKFL1A (filling loop kit for the EHY2KOMB28+32AA gas boiler)
3 Power up the gas boiler to see the pressure indication on the boiler display.
4 If an automatic air purge valve was installed, make sure it is open.
5 Fill the circuit with water until the boiler display indicates a pressure of ±2 bar
(with a minimum of 0.5 bar).
Note: The pressure relief valve of the outdoor unit is designed to open at
3 bar.
6 Purge air from all manual air purge valves in the system (open, purge air,
close).
7 Check the pressure. If it is too low, repeat from step 5.
8 Turn ON the pump, and check if you can still hear air in the circuit. After
±1 min, turn it OFF.
Note: To turn the pump ON and OFF, use the air purge function on the
outdoor unit's user interface. See
9 Purge air again from all manual air purge valves in the system (especially if you
heard air in the circuit).
10 Check the pressure again. If it is too low, repeat from step 5.
11 Disconnect the water supply hose from the fill/drain point.
With T-joint (field supply) + shut-off valve (field
supply).
2
"13.4.1 Air purge
b2
3
1
4
function" [ 188].
EJHA04AAV3 + EHY2KOMB28+32AA
Daikin Altherma H Hybrid
4P531180-1D – 2025.03