6 | Unit installation
Installer reference guide
34
CVXM-A, FVXM-A, CVXM-A9, FVXM-A9, FVXTM-A
Split system air conditioners
4P625991-1F – 2022.09
NOTICE
▪ Install the drain hose with a downward slope.
▪ Traps are NOT permitted.
▪ Do NOT put the end of the hose in water.
▪ 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.
6.4.2 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).
a Drain pan
b Drain socket
c Drain hose (accessory)
d Screw (accessory)
2 Check for water leaks (see "6.4.3To check for water leaks"[435]).
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 ≥50mm, so it
will not be pulled out of the drain pipe.
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