Guidelines When Installing The Ducting; Guidelines When Installing The Drain Piping - Daikin FDA125A5VEB Installation And Operation Manual

12 Unit installation
4×
a1
b1
c1
b1
a2
a
a1 Nut (field supply)
a2 Double nut (field supply)
b1 Washer (accessories)
c1 Hanger bracket (attached to the unit)
a Indoor unit
b Pipe
c Hanger bracket pitch (suspension)
d Suspension bolt spacing
▪ Installation example:
b
a
c
d
e
a Anchor
b Ceiling slab
c Long nut or turn-buckle
d Suspension bolt
e Indoor unit
▪ Install the unit temporarily.
5 Attach the hanger bracket to the suspension bolt.
6 Fix it securely.
▪ Level. Make sure the unit is level at all four corners using a level
or a water-filled vinyl tube.
a
b
a Water level
b Vinyl tube
7 Tighten the upper nut.
NOTICE
Do NOT install the unit tilted. Possible consequence: If
the unit is tilted against the direction of the condensate flow
(the drain piping side is raised), the float switch might
malfunction and cause water to drip.
12.2.2

Guidelines when installing the ducting

WARNING
Do NOT install operating ignition sources (example: open
flames, an operating gas appliance or an operating electric
heater) in the duct work.
Installation and operation manual
14
d
c
b
d
630
700
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
"16 Configuration" [ 4 19]).
The ducting is to be field supplied.
▪ Air inlet side. Attach the duct and intake-side flange (field
supply). For connecting the flange, use 7 accessory screws.
a b c
d e
a Connection screw (accessory)
b Flange (field supply)
c Main unit
d Insulation (field supply)
e Aluminium tape (field supply)
▪ Fixing screws. When installing an air inlet duct, select fixing
screws that stick out 5 mm on the inside of the flange to protect
the air filter from damage during maintenance of the filter.
a b
c
5 mm
a Air inlet duct
b Inside of the flange
c Fixing screw
▪ Filter. Be sure to attach an air filter inside the air passage on the
intake side. Use an air filter with dust collecting efficiency ≥50%
(gravimetric method). The included filter is not used when the
intake duct is attached.
▪ Air outlet side. Connect the duct according to the inside
dimension of the outlet-side flange.
▪ Air leaks. Wind aluminium tape around the intake side flange and
duct connection. Make sure there are no air leaks at any other
connection.
▪ Insulation. Insulate the duct to prevent condensation from
forming. Use glass wool or polyethylene foam 25 mm thick.
12.2.3 Guidelines when installing the drain
piping
Make sure condensation water can be evacuated properly. This
involves:
b a
e d
FDA125A5VEB
Split system air conditioners
4P494410-1D – 2022.10