4. Drain hose installation
(Example;4-way cassette type)
20
. Installation
Λ
Λ
CC
CC
AA
AA
UU
UU
TT
TT
II
II
OO
OO
NN
NN
Must fit tightly against the
unit body without any gap.
Drain hose
port
Insulation drain sub
Adhesives
Insulation cover drain
No gap
Insulation drain hose
Clamp(Not supplied)
Indoor
Unit
CC
CC
AA
AA
UU
UU
TT
TT
II
II
OO
OO
NN
NN
Install air ventilation to drain condensate
water smoothly.
Check that the indoor unit is level with the ceiling by using a level.
If it is necessary to increase the height of the drain hose
somewhat, the portion directly after 12”. If it is raised
higher than 20”, there can be water leaks.
Air ventilation
Ceiling
12” or less
20” or less
30” or less
Do not give the hose and upward gradient
after the connection port.
This will cause water to flow backwards when
the unit is stopped, resulting in water leaks.
Do not apply force to the piping on the unit side when
connecting the drain hose. The hose should not be
allowed to hang loose from its connection to the unit.
Fasten the hose to a wall, frame or other support as
close to the unit as possible.
Upward gradient
Support pieces
up to 5’
1/100 or more
Flexible hose
Band joint
Ceiling
Ceiling
Ceiling
1)
Insert the flexible hose to the drain hose port.
2) Install the drain hose so that its length can be as short as
possible. Internal diameter of the drain hose should be the
same or slightly bigger than the external diameter of the
drain hose port.
◆ Inner diameter of the drain hose
3) Wrap the drain hose with insulation as shown and secure it.
Care must be taken when installing the drain hose for the
indoor unit to ensure that any condensate water is correctly
drained outside.
◆ Give a slightly slant to the drain hose for proper
drainage of condensate.
◆ Secure the drain hose with an adhesive for PVC and
tape so it will not be separated from the unit.
NN
NN
oo
oo
tt
tt
ee
ee
◆ Attach the drain hose to the drain hose port with an
adhesive for PVC and tape to prevent water leaks, then
secure the hose with a clamp.(The clamp is not supplied
with the air conditioner.)
NN
NN
oo
oo
tt
tt
ee
ee
1 1/8”(Outer diameter)
5-1.Installation_TM_E_06890 2/27/03 10:15 AM Page 20
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