Daikin EHVH08SU23DA6V7 [61/240] Preparation

Daikin EHVH08SU23DA6V7 [61/240] Preparation
6 | Preparation
Installer reference guide
61
ERGA04~08DAV3(A) + EHVH04+08SU18+23DA6V7
Daikin Altherma 3 R F
4P618956-1 – 2020.03
Minimum water volume
For EHVH*, there are no requirements for the minimum water volume.
For EHVX*, check that the total water volume in the installation is minimum
10litres.
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.
Maximum water volume
Use the following graph to determine the maximum water volume for the
calculated pre-pressure.
0.3
0.5
1
1.5
2
2.4
5020 100 150 200 250 290
a
b
a Pre-pressure (bar)
b Maximum water volume (l)
Example: Maximum water volume and expansion vessel pre-pressure
Installation
height
difference
(a)
Water volume
≤200l >200l
≤7m No pre-pressure adjustment is
required.
Do the following:
Decrease the pre-pressure
according to the required
installation height
difference. The pre-pressure
should decrease by 0.1 bar
for each metre below 7 m.
Check if the water volume
does NOT exceed the
maximum allowed water
volume.

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