6 | Unit installation
Installer reference guide
30
FTXJ-A(W)(S)(B)
Daikin room air conditioner
4P518023-12K – 2022.05
6.4 Connecting the drain piping
In this chapter
6.4.1 General guidelines.................................................................................................................................................. 30
6.4.2 To connect the piping on right side, right-back, or right-bottom......................................................................... 31
6.4.3 To connect the piping on left side, left-back, or left-bottom................................................................................ 31
6.4.4 To check for water leaks ........................................................................................................................................ 32
6.4.1 General guidelines
▪ Pipe length. Keep drain piping as short as possible.
▪ Pipe size. If drain hose extension or embedded drain piping is required, use
appropriate parts that match the hose front end.
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 extension. To extend the drain hose, use a field supplied hose with
inner Ø16mm. Do NOT forget to use a heat insulation tube on the indoor section
of the extension hose.
a Drain hose supplied with the indoor unit
b Heat insulation tube (field supply)
c Extension drain hose
▪ Ridgid polyvinyl chloride pipe. When connecting a ridgid polyvinyl chloride pipe
(nominal Ø13mm) directly to the drain hose as with embedded piping work, use
a field supplied drain socket (nominal Ø13mm).
a Drain hose supplied with the indoor unit
b Drain socket with nominal Ø13mm (field supply)
c Ridgid polyvinyl chloride pipe (field supply)
▪ Condensation. Take measures against condensation. Insulate the complete drain
piping in the building.
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