16
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Unit installation
Installer and user reference guide
56
FXSA15~140A2VEB
VRV system air conditioner
4P599622-1 – 2020.05
16.2.2 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.
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
The ducting is to be field supplied.
1
Connect the canvas duct to the inside of the flange on both inlet and outlet
side. For connecting the canvas duct, use accessory screws.
2
Connect the duct to the canvas duct.
a
b
c
b
a
f
f
e
e
d
d
a
Screws for duct flanges (accessory)
b
Flange (located on the unit)
c
Indoor unit
d
Insulation (field supply)
e
Canvas duct (field supply)
f
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
3
Wind aluminium tape around the flange and duct connection. Make sure
there are no air leaks at any other connection.
4
Insulate the duct to prevent condensation from forming. Use glass wool or
polyethylene foam 25 mm thick.
