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9 Installation
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
purge function" on
page 79.
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.
NOTICE
The water pressure indicated on the boiler display vary
depending on the water temperature (higher pressure at
higher water temperature).
However, at all times water pressure shall remain above
1 bar to avoid air entering the circuit.
In case of third-party gas boiler
INFORMATION
Air purge valves. In case of third-party gas boiler, the
following air purge valves are possible:
▪ Manual air purge valves on the shut-off valves (option
EKBALLV1).
▪ Manual or automatic air purge valve inside the third-
party 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 the existing installation
3 Power up the gas boiler, and make sure you can read out the
pressure indication.
Note: The pressure indication can be:
▪ On the boiler display of the third-party gas boiler
▪ On a field-supplied manometer
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).
Installer reference guide
40
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
purge function" on
9 Turn ON the bivalent signal test, and check if you can still hear
air in the circuit. After ±1 min, turn it OFF.
Note: To turn the bivalent signal test, see
an actuator test run" on
10 Purge air again from all manual air purge valves in the system
(especially if you heard air in the circuit).
11 Check the pressure again. If it is too low, repeat from step 5.
12 Disconnect the water supply hose from the fill/drain point.
"12.4.1 Air
NOTICE
The water pressure indicated on the boiler display vary
depending on the water temperature (higher pressure at
higher water temperature).
However, at all times water pressure shall remain above
1 bar to avoid air entering the circuit.
9.6.7
To fill the domestic water circuit of the
gas boiler
1 Open the main tap to pressurize the hot water section.
2 Vent the exchanger and the pipe system by opening a hot water
tap.
3 Leave the tap open until all air has disappeared from the
system.
4 Check all connections for leaks including internal connections.
9.6.8
To fill the domestic hot water tank
For installation instructions, see the installation manual of the
domestic hot water tank.
9.6.9
To insulate the water piping
The piping in the complete water circuit MUST be insulated to
prevent condensation and reduction of the heating capacity.
To prevent the freezing of the outdoor water piping during winter
time, the thickness of the sealing material MUST be at least 13 mm
(with λ=0.039 W/mK).
During winter, protect the water piping and shut‑off valves against
freezing by adding heat tape (field supply). If the outdoor
temperature can drop below –20°C and no heat tape is used, it is
recommended to install the shut‑off valves indoors.
9.7
Connecting the electrical wiring
9.7.1
About connecting the electrical wiring
Before connecting the electrical wiring
Make sure the water piping is connected.
Typical workflow
Connecting the electrical wiring typically consists of the following
stages:
page 79.
"12.4.3 To perform
page 80.
EJHA04AAV3 + NHY2KOMB28+32AA
Daikin Altherma H Hybrid
4P556861-1A – 2019.05
"12.4.1 Air
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