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Unit installation
Installer and user reference guide
55
FXHA32~100AVEB
VRV system air conditioner
4P673749-1 – 2022.01
▪
Connecting the drain piping to the indoor unit
▪
Checking for water leaks
General guidelines
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Pipe length.
Keep drain piping as short as possible.
▪
Pipe size.
Keep the pipe size equal to or greater than that of the connecting pipe
(vinyl pipe of 20 mm nominal diameter and 26 mm outer diameter).
▪
Slope.
Make sure the drain piping slopes down (at least 1/100) to prevent air
from being trapped in the piping. Use hanging bars as shown.
1~1.5 m
a
a
Hanging bar
Allowed
Not allowed
▪
Condensation.
Take measures against condensation. Insulate the complete drain
piping in the building.
▪
Combining drain pipes.
You can combine drain pipes. Make sure to use drain
pipes and T-joints with the correct gauge for the operating capacity of the units.
≥100
(mm)
a
a
T-joint
To connect the drain piping to the indoor unit
NOTICE
Incorrect connection of the drain hose might cause leaks, and damage the
installation space and surroundings.
Drain piping can be connected from following directions:
a
b
c
d
a
Left drain piping
b
Rear left drain piping
c
Rear right drain piping
d
Right drain piping
Rear left or left drain piping
1
Remove the protective grille (32 class: 7 screws, 50+63 class: 11 screws, 100
class: 10 screws).
