Daikin EWAA016DAV3P - Connecting Water Piping; About Connecting the Water Piping; Precautions When Connecting the Water Piping; To Connect the Water Piping

8 | Piping installation
Installer reference guide
68
EWAA011~016DA + EWYA009~016DA
Packaged air-cooled water chillers
and packaged air to water heat pumps
4P620242-1 – 2020.06
▪ The corresponding maximum water volume at 0.3bar is 290l. (See the graph in
"Maximum water volume"[465]).
▪ Because 250 l is lower than 290 l, the expansion vessel is appropriate for the
installation.
8.2 Connecting water piping
8.2.1 About connecting the water piping
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 (if applicable).
3 Protecting the water circuit against freezing (addition of glycol or installation of
freeze protection valves).
4 Filling the water circuit.
5 Insulating the water piping.
INFORMATION
For instructions regarding the external backup heater kit, see:
▪ The installation manual of the backup heater kit
▪ "To connect the backup heater kit" [4 84] (this topic partially supersedes the
installation manual of the backup heater)
8.2.2 Precautions when connecting the water piping
INFORMATION
Also read the precautions and requirements in the following chapters:
▪ "2General safety precautions"[49]
▪ "8.1Preparing water piping"[462]
8.2.3 To connect the water piping
NOTICE
Do NOT use excessive force when connecting the field piping and make sure the
piping is aligned properly. Deformation of the piping can cause malfunctioning of the
unit.