Daikin FVXM25A2V1B, Installation Manual

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5 Unit installation
Installation manual
8
C FVXM25~50A
Split system air conditioners
3P477070-2M – 2021.09
5.3.2 To drill a wall hole
CAUTION
For walls containing a metal frame or a metal board, use a
wall embedded pipe and wall cover in the feed-through
hole to prevent possible heat, electrical shock, or fire.
NOTICE
Be sure to seal the gaps around the pipes with sealing
material (field supply), in order to prevent water leakage.
1 Bore a 65 mm large feed-through hole in the wall with a
downward slope towards the outside.
2 Insert a wall embedded pipe into the hole.
3 Insert a wall cover into the wall pipe.
Ø65
a b
c
a Wall embedded pipe
b Putty
c Wall hole cover
4 After completing wiring, refrigerant piping and drain piping, do
NOT forget to seal the gap with putty.
5.3.3 To remove the slit portions
For side piping (left/right) and bottom piping (left/right) slit portions
must be removed. Remove slit portions according to where the
piping is taken out.
a
c
d
d
b
a Bottom frame
b Slit portion for side piping on the front grille (same on the
other side)
c Slit portion for side piping on the bottom frame (same of
the other side)
d Slit portion for the bottom piping
1 Cut off the slit portion using nippers.
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.
▪ 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).