Daikin FXDA10A2VEB - Page 53

16 | Unit installation
Installer and user reference guide
53
FXDA10~63A2VEB
VRV system air conditioner
4P599621-1A – 2020.10
▪ Checking for water leaks
General guidelines
▪ 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
O Allowed
X Not allowed
▪ Condensation. Take measures against condensation. Insulate the complete drain
piping in the building.
▪ Rising piping. If necessary to make the slope possible, you can install rising
piping.
- Drain hose inclination: 0~75mm to avoid stress on the piping and to avoid air
bubbles.
≤600
≤300
0~75
1000~1500
(mm)
ba
ba ddc
a Metal clamp (accessory)
b Drain hose (accessory)
c Rising drain piping (vinyl pipe nominal Ø20mm and outer Ø26mm)
d Hanging bars (field supply)
▪ 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≤600
(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.