Daikin Perfera FVXM35A3V1B - Page 32

6 | Unit installation
Installer reference guide
32
CVXM20A + FVXM25~50A
Split system air conditioners
4P625991-1C – 2021.09
▪ Drain hose. Drain hose (accessory) is 220 mm long and with 18 mm outer
diameter on the connecting side.
▪ Extension hose. Use rigid polyvinyl chloride pipe (field supply) with 20 mm
nominal diameter as extension hose. When connecting an extension hose, use a
polyvinyl adhesive agent for glueing.
▪ Condensation. Take measures against condensation. Insulate the complete drain
piping in the building.
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.
1 Push the drain hose (accessory) as far as possible over the drain socket and fix
it with 1 screw (accessory).
d
1×
c
a
b
a Drain pan
b Drain socket
c Drain hose (accessory)
d Screw (accessory)
2 Check for water leaks (see "To check for water leaks"[433]).
3 Insulate the indoor drain socket and drain hose with ≥10 mm insulation
material to prevent condensation.
4 Connect the drain piping to the drain hose. Insert the drain hose ≥50mm, so it
will not be pulled out of the drain pipe.