Daikin EBSX-D - To Check the Water Volume and Flow Rate; Connecting Water Piping; To Connect the Water Piping

5 Piping installation
Installation manual
17
EBSH/X(B)11+16P50D
Daikin Altherma 3 R ECH₂O
4P759878-1 – 2024.01
INFORMATION
The following figure is an example and may NOT
completely match your system layout
89°C 60°C
M
EXAMPLE
▪ Magnetic filter/dirt separator. If the indoor unit is connected to a
heating system with radiators, steel pipes, or non-diffusion-proof
floor heating pipes, it is necessary to install a magnetic filter/dirt
separator into the return flow of the system. If the indoor unit is
connected to a domestic cold water supply containing steel pipes,
it is necessary to install a magnetic filter/dirt separator before the
cold water connection.
▪ Storage tank – Water quality. Minimum requirements regarding
the quality of water used to fill the storage tank:
▪ Water hardness (calcium and magnesium, calculated as
calcium carbonate): ≤3mmol/l
▪ Conductivity: ≤1500 (ideal: ≤100)μS/cm
▪ Chloride: ≤250mg/l
▪ Sulphate: ≤250mg/l
▪ pH value: 6.5~8.5
For properties deviating from the minimum requirements, suitable
conditioning measures have to be taken.
5.3.1 To check the water volume and flow rate
To make sure that the unit operates properly:
▪ You MUST check the minimum water volume and the minimum
flow rate.
Minimum water volume
Check that the total water volume in the installation is higher than
the minimum water volume, the internal water volume of the indoor
unit NOT included:
If… Then the minimum water
volume is…
Cooling operation 20l
Heating operation 20l
Maximum water volume
INFORMATION
The defrost cycle can be interrupted to prevent freeze-up
of the heat exchanger when the following 3 conditions are
fulfilled.
▪ The water volume in the installation exceeds 300 litre.
▪ The ambient temperature is below –10°C.
▪ The water temperature is below 25°C.
ð When a stop error occurs due to consecutive
interruptions, a power reset of the unit will be required
to clear the error.
Minimum flow rate
Check that the minimum flow rate in the installation is guaranteed in
all conditions.
If operation is… Then the minimum required
flow rate is…
Cooling 16l/min
Heating/defrost 22l/min
NOTICE
When circulation in each or certain space heating loops is
controlled by remotely controlled valves, it is important that
the minimum flow rate is guaranteed, even if all valves are
closed. In case the minimum flow rate cannot be reached,
a flow error 7H will be generated (no heating or operation).
See the installer reference guide for more information.
See the recommended procedure as described in "8.2 Checklist
during commissioning"[443].
5.4 Connecting water piping
5.4.1 To connect the water piping
NOTICE
Do NOT use excessive force when connecting the field
piping and make sure the piping is aligned properly.
Deformed pipes can cause the unit to malfunction.
1 Remove the thermal insulation of the hydraulic block. Open the
automatic air purge valve on the pump by one turn. Afterwards
put the thermal insulation back on the hydraulic block.
NOTICE
The thermal insulation can easily be damaged if NOT
handled correctly.
▪ ONLY remove parts in the order and direction as
indicated here,
▪ do NOT use force,
▪ do NOT use tools,
▪ re-install the thermal insulation in reverse order.