Guidelines When Installing The Drain Piping - Daikin FXSN112A2VEB Installer And User Manual

15 | Unit installation

15.2.3 Guidelines when installing the drain piping

General guidelines
Installer and user reference guide
52
▪ 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.
Make sure condensation water can be evacuated properly. This involves:
▪ General guidelines
▪ Connecting the drain piping to the indoor unit
▪ Checking for water leaks
▪ 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.
a Hanging bar
O Allowed
X Not allowed
▪ 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.
- Rising piping: ≤300 mm from the unit, ≤625 mm perpendicular to the unit.
a b
1~1.5 m
a
≤300 1000~1500
a b c d
(mm)
d
FXSN50~112A2VEB
CO₂ Conveni-Pack: indoor unit
4P602817-1 – 2020.02