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If the distribution joint will be cut before use, cut on the
line marked “cutting point” in the fi gure below.
Horizontal installation
Vertical installation (directed upward or downward)
NOTE
Nitrogen gas replacement required for tube
brazing
If nitrogen replacement is not done when brazing is
performed on the indoor and outdoor unit refrigerant tubing,
oxide scale will occur. This scale will clog the solenoid
valves, strainers, and other parts, leading to malfunction.
Therefore be sure to replace the air in the tubing with
nitrogen when performing brazing in order to prevent
problems from oxide scale.
I nstalling Distribution Joint Kit (for Twin &
Double-Twin) (CZ-P155BK1 & CZ-P680BK2)
For branching tubes, install 150 mm or longer (including
reducer) straight tubing up to the point where the tube
branches (or after the point where the tubes join together).
Use a tube cutter and cut at the size position that
corresponds to the fi eld-supply tube size selected based
on the total indoor unit capacity. (If the size is the same as
the tube end size, cutting is not necessary.)
If the reducer that was supplied in the package is used,
perform brazing on-site.
Do not cut in such a way that applies excessive force and
causes deformation of the tube. (This will prevent insertion
of the connecting tube.)
Cut at a position that is as far away as possible from the
dowel pin.
After cutting the tube, be sure to remove any burrs and to
fi nish the end surface correctly.
(If there is excessive crushing or indentation of the tube,
use a tube expander to expand it.)
Check that there is no dirt or other foreign substance
inside the distribution tubing.
Install the distribution tubing so that it is either horizontal
or vertical.
Use the supplied thermal insulation to insulate the
distribution tubing.
(If other insulation is used, be sure to use insulation that
can withstand temperatures of at least 120°C.)
150 mm or longer straight tubing up
Dowel pin
Cutting location
Cut as far away as possible
(to ensure proper insertion
clearance for the connecting tube)
Example showing
tubing directed upward
Outdoor unit side
Horizontal line
indoor unit side
Hor
izontal line
Install at a positive
angle.(0°)
Installing Distribution Joint Kit (for Triple) (CZ-P3HPC2)
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
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 glass wool
(16 – 20 k
g
/m
3
, with a thickness of 10 mm or more) to the below
insulation materials and apply suffi cient 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
<Gas tube side>
Distribution joint
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
INCORRECT
Be sure to install so that the tubes are
horizontal after the branch point.
Inclination
<Liquid tube side>
Inclination
More than 500mm
Distribution joint insulation material (supplied)
• Use the supplied insulation mater
ial.
•
The supplied insulation material include only a tape for temporarily
fastening.
•
Use insulation mater
ial or other material to seal the joining lines
so that there are no gaps.
•
Use vi
nyl tape or similar means to seal and fasten the insulation
materials in place.
Seal securely with vinyl tape (4 locations)
Refrigerant tubing (fi eld supply)
Tubing insulation material (fi eld supply;
thickness of more than 10 mm) Tubing
insulation material must be able to withstand
temperatures of at least 120°C
Refrigerant tubing (fi eld supply)
More than 500mm
SM830252-01_欧州_Single_8・10HP_TD_SM.indb 39
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AMP Air Conditioning
www.ampair.co.uk | [email protected]