Daikin Altherma 3 H HT - Page 17

3 | Specific installer safety instructions
Installer reference guide
17
EPRA14~18D + ETVZ16S18+23E
Daikin Altherma 3 H HT F
4P644739-1A – 2022.03
DANGER: RISK OF ELECTROCUTION
DANGER: RISK OF BURNING/SCALDING
Mounting the outdoor unit (see
"7.3Mounting the outdoor unit"[
4
63]
)
WARNING
Fixing method of the outdoor unit MUST be in accordance with the instructions from
this manual. See "7.3Mounting the outdoor unit"[463].
CAUTION
To avoid injury, do NOT touch the air inlet or aluminium fins of the unit.
WARNING
Rotating fan. Before powering ON or servicing the outdoor unit, make sure that the
discharge grille covers the fan as protection against a rotating fan. See:
▪ "7.3.6To install the discharge grille"[467]
▪ "7.3.7To remove the discharge grille, and put the grille in safety position"[469]
Mounting the indoor unit (see
"7.4Mounting the indoor unit"[
4
71]
)
WARNING
Fixing method of the indoor unit MUST be in accordance with the instructions from
this manual. See "7.4Mounting the indoor unit"[471].
Piping installation (see
"8Piping installation"[
4
73]
)
WARNING
Field piping method MUST be in accordance with the instructions from this manual.
See "8Piping installation"[473].
In case of freeze protection by glycol:
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.