Connecting Water Piping; About Connecting The Water Piping - Daikin EBLA09D V3 Series Installer's Reference Manual

8 | Piping installation

8.2 Connecting water piping

8.2.1 About connecting the water piping

Installer reference guide
80
The outdoor 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 outdoor 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 unit is mounted.
Typical workflow
Connecting the water piping typically consists of the following stages:
1 Connecting the water piping of the outdoor unit.
2 Connecting the water piping of the external backup heater kit and/or the
domestic hot water tank (if applicable).
3 Protecting the water circuit against freezing (addition of glycol or installation of
freeze protection valves).
4 Filling the water circuit.
5 Filling the domestic hot water tank (if applicable).
6 Insulating the water piping.
INFORMATION
For instructions regarding the domestic hot water tank, see the installation manual
of the tank.
For instructions regarding the external backup heater kit, see:
▪
The installation manual of the backup heater kit.
▪
"To connect the backup heater
installation manual of the backup heater)
4
77]).
4
kit" [ 102] (this topic partially supersedes the
EBLA09~16D + EDLA09~16D
Daikin Altherma 3 M
4P620241-1B – 2022.05