3. Installation of outdoor unit
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Heat pump 50Hz/R410A
Part 3 Design and installation
3.9 Y-Branch and branch distributor(BD) unit
3.9.1 Branch (Accessory)
• There is no limitation on the joint mounting configuration.
• If the diameter of the refrigerant piping selected by the procedures described is different from the size
of the joint, the connecting section should be cut with a pipe cutter.
• Branch pipe should be insulated with the insulation in each kit.
• Ensure that the branch pipes are attached horizontally or vertically (see the diagram below.)
Facing upwards
Viewed from point A in direction of arrow
Horizontal
plane
Within 10°
A
A
B
To outdoor unit
To BD unit
A
B
Liquid and gas
pipe joints
Insulation
(included with kit)
Insulation for
field piping
Tape(insulation tape)
(field supply)
Do not use general electrical insulation tape, because it may get loose or get detached.
CAUTION
Y- Branch(PMBL5620)
