Outdoor Unit | Installation Manual |
6 REFRIGERANT PIPING
Piping connections are inside the front panel of the unit and the front panel and pipe cover needs to be removed before piping and wiring connections are made.
Piping can enter the outdoor unit from the back, from the side or from the bottom as shown
Front panel
Pipe cover
Rearearward
Pipe cover
SideSideward
DownwardBottom
1.Remove the front panel of the unit.
2.Remove the pipe cover.
3.Remove the appropriate knockout depending on the orientation of the piping.
The pipe cover is easily mounted by cutting off the slit at the lower part of the pipe cover.
Flaring
1.Cut the pipe with a pipe cutter.
Be sure to remove burrs that may cause a gas leak.
2.Insert the supplied flare nut into the pipe, and then flare the pipe.
As the flaring sizes of R410A differ from those of refrigerant R22, the flare tools newly manufactured for R410A are recommended.
However, the conventional tools | B |
can be used by adjusting the |
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projection margin of the copper |
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pipe. |
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▼ Projection margin in flaring : B (Unit : in (mm)) Rigid (Clutch type)
Outer diameter of | R410A tool | Conventional | |
used | tool used | ||
copper pipe |
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R410A | 0.04” - 0.06” | ||
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3/8” (9.5) |
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0 - 0.02” (0 - 0.5) | (1.0 - 1.5) | ||
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5/8” (15.9) | |||
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▼ Flaring diameter size : A (Unit : in (mm))
Outer diameter of copper pipe | A |
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3/8” (9.5) | 0.52” (13.2) |
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5/8” (15.9) | 0.78” (19.7) |
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* In case of flaring for R410A with the |
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conventional flare tool, pull the tool out |
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approx. 0.02” (0.5 mm) more than that for |
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R22 to adjust it to the specified flare size. |
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The copper pipe gauge is useful for |
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adjusting the projection margin size. |
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* Be sure to wear heavy work gloves while working.
4.Remove the burrs from the knockout opening and use the factory supplied protective edge guard material around the opening to protect the piping and the wiring.
5.Remove the flare nut from the service valve on outdoor unit. Insert the flare nut into the field piping, and flare the pipe.
Bend the pipe approx. 90 degree with a pipe bender for side and rear piping.
6. When the piping connections are complete re- | EN | |
install the pipe cover. | ||
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