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Service Manual
(2) The location of the hole is different depending on
which side of the pipe is taken out .
(3) For piping ,see6.Connecting the refrigerant pipe ,
under Indoor Unit Installation(1).
(4) Allow space around the pipe for a easier
indoor unit pipe connection.
CAUTION
Min.allowable length
●
The suggested shortest pipe length is 2.5m,in order to
avoid noise from the outdoor unit and vibration.
(Mechanical noise and vibration may occur depending on
how the unit is installed and the environment in which it is
used.)
●
See the installation manual for the outdoor unit for the
maximum pipe length.
●
For multi-connections ,see the installation manual for
the multi-outdoor unit.
2. Boring A Wall Hole and Installing Wall Embedded Pipe
●
For walls containing metal frame or metal board ,be sure to use a wall embedded
pipe and wall cover in the feed-through hole to
●
Be sure to caulk the gaps around the pipes with caulking material to prevent
water leakage.
(1) Bore a feed-through hole of 65mm in the wall so it has a down slope toward the
outside.
(2) Insert a wall pipe into the hole.
(3) Insert a wall cover into wall pipe .
(4) After completing refrigerant piping, wiring, and drain piping, caulk pipe hole gap with putty.
3. Drain Piping
(1) Use commercial regid polyvinyl chloride pipe general VP 20 pipe, outer diameter 26mm, inner diameter 20mm for the drain pipe.
(2)The drain hose (outer diameter 18mm at connecting end, 220mm long)is supplied with the indoor unit. Prepare the drain pipe
picture below position.
(3) The drain pipe should be inclined downward so that water will flow smoothly without any accumulation.(Should not be trap.)
(4) Insert the drain hose to this depth so it wont be pulled out of the drain pipe.
(5) Insulate the indoor drain pipe with 10mm or more of insulation material to prevent condensation.
(6) Remove the air filters and pour some water into the drain pan to check the water flows smoothly.
CAUTION
Use polyvinyl chloride adhesive agent for gluing. Failure to do so may cause water leakage.
Installation and Maintenance
75
Left back piping
Refrigerant pipe
150
100
50mm
Drain hose
or more
Vinyl chloride
Reducer
drain pipe
L
e
t f
b
t o
o t
m
p
p i
n i
g
75
75
Right back piping
wall
Inside
Wall embedded pipe
(field supply)
Wall hole cover
(field supply)
Must be no trap
Do not touch water
(Unit : mm)
Wall
R
g i
t h
b
t o
o t
m
p
p i
n i
g
75
45
Left/right piping
75 Floor
Outside
Caulking
Wall embedded pipe
(field supply)
35
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