Daikin ETSX16E Installer's Reference Manual page 89

8.1.2 To check the water volume and flow rate
EPRA14~18D + ETSH/X(B)16P30+50E
Daikin Altherma 3 H HT ECH₂O
4P679467-1D – 2023.11
a b
a Recirculation connection
b Hot water connection
c Shower
d Recirculation pump
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 20 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.
NOTICE
When circulation in each space heating/cooling loop is controlled by remotely
controlled valves, it is important that the minimum water volume is guaranteed,
even if all of the valves are closed.
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
22 l/min
c
d
a a
M1
b
b
8 Piping installation
|
a
M2 M3
Installer reference guide
89