16
Refrigerant tubing (field supply)
Refrigerant tubing (field supply)
Seal securely with vinyl tape (4 locations)
Distribution joint insulation materials (supplied)
Use the supplied insulation materials.
The supplied insulation materials include only
tape for temporarily fastening them in place.
Use insulation material or other material to
seal the joining lines so that there are no gaps.
Use vinyl tape or similar means to seal and
fasten the insulation materials in place.
•
•
•
•
Tubing insulation material must be able to withstand
temperatures of at least 120
°
C.
Tubing insulation material
(field supply; thickness of more than 10 mm)
Only the distribution joints are horizontal with
respect to the ground. The collective tubes
are vertical with respect to the ground.
The collective tube and distribution
joint are horizontal with respect to
the ground.
Collective tube
Distribution joint
<Narrow tube side>
1-8. Installing Distribution Joint Kit (for Triple)
(K70A061Z)
●
Before installing, check the system combination.
●
The 3 indoor units must be installed within the
same room.
●
To adjust the tube sizes of the distribution joints,
use the supplied tube connectors.
How to Install Distribution Joints
Use the supplied distribution joints to complete refrig-
erant tubing work.
Install distribution joints so that the tubes are horizon-
tal after the branch point.
Orientation of distribution joints
Only the distribution joints are
horizontal with respect to the ground.
The collective tubes are vertical with
respect to the ground.
The collective tube and
distribution joint are horizontal
with respect to the ground.
Collective tube
Distribution joint
<Wide tube side>
Inclination
Inclination
Be sure to install so that
the tubes are horizontal
after the branch point.
INCORRECT
Length requirement for strainer on main
distribution tube side
Attach a straight tube 500 mm or longer to the
main tubing side of the distribution joint (for
both narrow and wide tubing).
Tubing insulation
Be sure to apply thermal insulation to both the
narrow and wide tubing.
Depending on the conditions inside the ceiling,
condensation may form on the insulation mate-
rial. If high temperatures and high humidity are
expected to occur inside the ceiling, add glass
wool (16 – 20 kg/m
3
, with a thickness of 10 mm
or more) to the below insulation materials and
apply sufficient thermal insulation.
More than 500 mm
More than 500 mm
04-393 DC INV Tech p a-44 12/15/04 3:04 PM Page 16
