Daikin CVXM20A2V1B, Installation Manual

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5 Unit installation
Installation manual
8
FVXM25~50A2V1B
Split system air conditioners
3P477070-2H – 2020.06
2 Remove an burrs along the cut section using a half round
needle file.
5.3.4 To provide drainage
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. Minimum is
3 m.
▪ Pipe size. Use rigid polyvinyl chloride pipe with 20 mm nominal
diameter and 26 mm outer diameter.
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.
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
8]).
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.
100
a
≥50
220
150
100
(mm)
c
d
b
a
a Drain hose (accessory)
b Vinyl chloride drain pipe (VP-30) (field supply)
c Reducer (field supply)
d Vinyl chloride drain pipe (VP-20) (field supply)
To check for water leaks
1 Remove the air filters.
2 Gradually pour approximately 1 l of water in the drain pan, and
check for water leaks.