To Check The Water Volume: Examples; Connecting Water Piping; About Connecting The Water Piping; Precautions When Connecting The Water Piping - Daikin Altherma 3 H HT W EPRA14DAV3 Installer's Reference Manual

8.1.5 To check the water volume: Examples

8.2 Connecting water piping

8.2.1 About connecting the water piping

8.2.2 Precautions when connecting the water piping

EPRA14~18DAV3+W1 + ETBH/X16EF6V+9W
Daikin Altherma 3 H HT W
4P644736-1 – 2021.02
Example 1
The indoor unit is installed 5 m below the highest point in the water circuit. The
total water volume in the water circuit is 100 l.
No actions or adjustments are required.
Example 2
The indoor unit is installed at the highest point in the water circuit. The total water
volume in the water circuit is 250 l.
Actions:
▪ Because the total water volume (250 l) is more than the default water volume
(200 l), the pre-pressure must be decreased.
▪ The required pre-pressure is:
Pg = (0.3+(H/10)) bar = (0.3+(0/10)) bar = 0.3 bar
▪ The corresponding maximum water volume at 0.3 bar is 290 l. (See the graph in
"Maximum water volume" [
▪ Because 250 l is lower than 290 l, the expansion vessel is appropriate for the
installation.
Before connecting the water piping
Make sure the outdoor and indoor unit are mounted.
Typical workflow
Connecting the water piping typically consists of the following stages:
1 Connecting the water piping to the outdoor unit.
2 Connecting the water piping to the indoor unit.
3 Connecting the drain hose to the drain.
4 Filling the water circuit.
5 Filling the domestic hot water tank.
6 Insulating the water piping.
INFORMATION
Also read the precautions and requirements in the following chapters:
▪
"2 General safety
▪
"8.1 Preparing water
4
86]).
precautions" [ 4 10]
4
piping" [ 83]
8 Piping installation
|
Installer reference guide
89