Daikin EWAA0 DAV3P Series Installer's Reference Manual page 16

3 | Specific installer safety instructions
Installer reference guide
16
DANGER: RISK OF ELECTROCUTION
DANGER: RISK OF BURNING/SCALDING
Piping installation (see
WARNING
Field piping method MUST be in accordance with the instructions from this manual.
See "8 Piping installation" [
In case of freeze protection by glycol:
WARNING
Ethylene glycol is toxic.
WARNING
Due to the presence of glycol, corrosion of the system is possible. Uninhibited glycol
will turn acidic under the influence of oxygen. This process is accelerated by the
presence of copper and high temperatures. The acidic uninhibited glycol attacks
metal surfaces and forms galvanic corrosion cells that cause severe damage to the
system. Therefore it is important that:
▪
the water treatment is correctly executed by a qualified water specialist,
▪
a glycol with corrosion inhibitors is selected to counteract acids formed by the
oxidation of glycols,
▪
no automotive glycol is used because their corrosion inhibitors have a limited
lifetime and contain silicates which can foul or plug the system,
▪
galvanized pipes are NOT used in glycol systems since the presence may lead to
the precipitation of certain components in the glycol's corrosion inhibitor.
Electrical installation (see
WARNING
Electrical wiring connection method MUST be in accordance with the instructions
from:
▪
This manual. See
▪
The wiring diagram, which is delivered with the unit, located at the inside of the
service cover. For a translation of its legend, see
4
unit" [ 219].
DANGER: RISK OF ELECTROCUTION
WARNING
ALWAYS use multicore cable for power supply cables.
4
"8 Piping installation" [
4
62].
"9 Electrical installation" [
"9 Electrical installation" [
62])
4 74])
4
74].
"17.3 Wiring diagram: Outdoor
EWAA011~016DA + EWYA009~016DA
Packaged air-cooled water chillers
and packaged air to water heat pumps
4P620242-1 – 2020.06