Daikin FXZA15A2VEB, Инструкция для установки и пользователя, Страница: 57 / 84

16 | Unit installation
Installer and user reference guide
57
FXZA15~50A2VEB
VRV system air conditioner
4P599623-1A – 2020.06
16.2.2 Guidelines when installing the drain piping
Make sure condensation water can be evacuated properly. This involves:
▪ General guidelines
▪ Connecting the drain piping to the indoor unit
▪ 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 25 mm nominal diameter and 32 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.
≤675
≤300
0~75
1000~1500
(mm)
b a
b c a d d
a Metal clamp (accessory)
b Drain hose (accessory)
c Rising drain piping (vinyl pipe of 25 mm nominal diameter and 32 mm outer diameter) (field supply)
d Hanging bars (field supply)
▪ Combining drain pipes. You can combine drain pipes. Make sure to use drain
pipes and T-joints with a correct gauge for the operating capacity of the units.
≥100
≤675
(mm)
a
a T-joint