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1
Installation of outdoor
1 - 8 Refrigerant piping
1 - 8 - 1
Selection of piping material
Restriction for the installation of the outside unit multi connection piping kit
•
Install the joint horizontally within a lean of ±15° with caution nameplate on top. Refer to figure 23 (Fig. A)
Do not connect it vertically. Refer to figure below (Fig. B)
•
Reserve the straight part of 500mm or more to the branch pipe and do not bend the local pipe in that area.Straight part of 500mm or more can be
reserved if a local pipe (straight pipe) of 120mm or more is connected to the joint.
Refer to figure below(Fig. C)
•
Incorrect installation may cause breakage of outside unit.
(Fig. A)
Caution nameplate
Horizontal line
Ground
Straight part of 500mm or more
Local pipe
(120mm length or more)
Precautions when selecting branch piping.
•
If the equivalent length of piping between the outside units and indoor units is 80m or longer, be sure to enlarge the main pipe in the liquid-side
branch piping.
Depending on the length of the refrigerant piping, the cooling/ heating capacity may drop, but even in such cases it is ok to enlarge the main pipe.
Outside unit
Main pipe
Enlarge
The first refrigerant branching kit.
Indoor unit
[Liquid side]
RWEYQ10MY1 type: .............f9.5. f12.7 (Minimum thickness f0.80mm)
RWEYQ20MY1 type: .............f15.9. f19.1 (Minimum thickness f1.00mm)
RWEYQ30MY1 type: .............f19.1. f22.2 (Minimum thickness f1.00mm)
TEMPER GRADE
Outer diameter
Minimum Wall Thickness
22
• Installation procedure
(Fig. B)
[C-arrow view]
O Type
ø9.5
ø12.7
ø15.9
0.80
0.80
0.99
®
• VRV
Systems • Installation procedure
(Fig. C)
[D-arrow view]
ø19.1
ø22.2
0.80
0.80
1/2 H Type
ø25.4
ø28.6
ø31.8
0.88
0.99
1.10
(Unit: mm)
ø34.9
1.21
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