Daikin FDA125A5VEB - Page 17

3 | Specific installer safety instructions
Installer and user reference guide
17
FDA125A5VEB
Split system air conditioners
4P495031-1B – 2022.10
CAUTION
▪ Make sure the installation of the duct does NOT exceed the setting range of the
external static pressure for the unit. Refer to the technical datasheet of your
model for the setting range.
▪ Make sure to install the canvas duct so vibrations are NOT transmitted to the
duct or ceiling. Use a sound-absorbing material (insulation material) for the lining
of the duct and apply vibration insulation rubber to the hanging bolts.
▪ When welding, make sure NOT to spatter onto the drain pan or the air filter.
▪ If the metal duct passes through a metal lath, wire lath or metal plate of the
wooden structure, separate the duct and wall electrically.
▪ Install the outlet grille in a position where the airflow will not come into direct
contact with people.
▪ Do NOT use booster fans in the duct. Use the function to adjust the fan rate
setting automatically (see "20Configuration"[473]).
Refrigerant piping installation (see
"17Piping installation"[
4
59]
)
CAUTION
▪ Incomplete flaring may cause refrigerant gas leakage.
▪ Do NOT re-use flares. Use new flares to prevent refrigerant gas leakage.
▪ Use flare nuts that are included with the unit. Using different flare nuts may
cause refrigerant gas leakage.
CAUTION
Piping MUST be installed according to instructions given in "17 Piping
installation" [4 59]. Only mechanical joints (e.g. braze+flare connections) that are
compliant with the latest version of ISO14903 can be used.
CAUTION
Install the refrigerant piping or components in a position where they are unlikely to
be exposed to any substance which may corrode components containing refrigerant,
unless the components are constructed of materials that are inherently resistant to
corrosion or are suitably protected against corrosion.
Electrical installation (see
"18Electrical installation"[
4
64]
)
WARNING
ALWAYS use multicore cable for power supply cables.
WARNING
▪ All wiring MUST be performed by an authorised electrician and MUST comply
with the applicable national wiring regulation.
▪ Make electrical connections to the fixed wiring.
▪ All components procured on-site and all electrical construction MUST comply
with the applicable legislation.