8
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Piping installation
Installer reference guide
89
EPRA14~W1 + ETSH/X(B)16P30+50EF
Daikin Altherma 3 H HT ECH₂O
4P679467-1 – 2022.02
c
d
a
b
a
Recirculation connection
b
Hot water connection
c
Shower
d
Recirculation pump
8.1.2 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 minimum 25 litres, the
internal water volume of the outdoor unit NOT included.
INFORMATION
In critical processes, or in rooms with a high heat load, extra water might be
required.
M2
a
a
a
M3
M1
b
b
a
Individual room thermostat (optional)
b
Shut-off valve
M1…3
Individual motorised valves to control each loop (field supply)
Minimum flow rate
Check that the minimum flow rate in the installation is guaranteed in all conditions.
Minimum required flow rate
25 l/min
NOTICE
If glycol was added to the water circuit, and the temperature of the water circuit is
low, the flow rate will NOT be displayed on the user interface. In this case, the
minimum flow rate can be checked by way of the pump test (check that the user
interface does NOT display error 7H).
