Installing Distribution Joint Kit (For Triple) - Sanyo Big PACi 18 Series Technical Data & Service Manual

Installing Distribution Joint Kit (for Triple)

(APR-RTP280AGB)
Check the system combination before installing
the distribution joints.
Three indoor units must be installed within the same room.
Use the supplied tube connectors to adjust the tube sizes
of the distribution joints.
How to Install Distribution Joints
Use the supplied distribution joints to complete refrigerant
tubing work.
Install distribution joints so that the tubes are horizontal 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.
Distribution joint
<Gas tube side>
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 liquid and gas tubing).
Tubing insulation
Be sure to apply thermal insulation to both the liquid and gas
tubing.
Depending on the conditions inside the ceiling, condensation
may form on the insulation material. If high temperatures and
high humidity are expected to occur inside the ceiling, add
3
glass wool (16 – 20 kg/m , with a thickness of 10 mm or more)
to the below insulation materials and apply sufficient thermal
insulation.
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
<Liquid tube side>
INCORRECT
Be sure to install so that the tubes are
horizontal after the branch point.
Collective tube
Distribution joint insulation material (supplied)
• Use the supplied insulation material.
• The supplied insulation material include only a tape for temporarily
fastening.
• 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.
Seal securely with vinyl tape (4 locations)
Refrigerant tubing (field supply)
Tubing insulation material
(field supply; thickness of more than 10 mm)
Tubing insulation material must be able to
withstand temperatures of at least 120˚C
Refrigerant tubing (field supply)
1-121
1