Panasonic S-36MK2E5A - Vertical Use; In Case of Using Header Tube Kit; Tube Cutting Portion

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Design of VRF SYSTEM
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4. Optional Parts
Cut off the header tube by the pipe cutter according to meet the demand of the local tube size selected in consideration of
the total amount of indoor units.
(It is not necessary to cut off the tube if it is identical to the tip of the size.)
When using with 3 indoor units, cut off the tube and joint in the position fitted to the refrigerant tubing size at the side of 3
indoor units. When not to use some of the header tubes, leave as-is.
When using with 5 to 8 indoor units, joint two header tubes as shown in the figure below. (Limited up to 2 header tubes)
Maximum length of two header tubes should be within 2m as shown in the figure below.
Connection of branch-to-branch tube is strictly prohibited.
Branch tube connection prohibited
Do not forcibly cut off the tube to escape deformation. (If doing so, connection tube cannot be inserted.)
NOTE
In case of using header tube kit :
Brazing
portion
Tube cutting portion :
Less than 2mm
(As short as possible)
(As short as possible)
Less than 8mm
Dowel
Dowel
Brazing portion
As short as possible
(Size of other tube insertion)
Cutting portion
Cutting portion
40mm
Cutting portion
After cutting off the tubing, carefully remove burrs from the cut cross section of the tube and make a smooth finish.
(If there is any hollow on the tube, enlarge the opening port by a mechanical pipe expander.)
Use the supplied reducer according to the tube size from the side of outdoor unit. In this case, braze it in the local field.
Check that there is no foreign substance inside the branch tube.
For the details, refer to “Installation Instructions”.
Use the supplied insulator for the insulation of the branch tube.
(When using other than that, be sure to insulate it to tolerate the temperature of more than 120°C.)
Request for Replacement of Nitrogen When Brazing
If the replacement of nitrogen was not carried out when brazing the refrigerant tube of the outdoor unit and indoor unit,
oxidized scale occurs and the motor valve and strainer become clogged.
This will cause malfunction. It is necessary to replace the air in the tube with the nitrogen gas when brazing the tube and
prevent the trouble caused by the oxidized scale.
To outdoor unit
To indoor unit
<Vertical use>
To outdoor unit
To indoor unit
Within 2m
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