Sanyo CL1251 Refrigerant Tubing, Use of the Flaring Method, Flaring Procedure with a Flare Tool

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5. Refrigerant Tubing

5-1. Use of the Flaring Method

Many of the conventional split system air conditioners employ the flaring method to connect refrigerant tubes which run between indoor and outdoor units. In this method, the copper tubes are flared at each end and connected with flare nuts.

5-2. Flaring Procedure with a Flare Tool

a)Cut the copper tube to the required length with a tube cutter. It is recommended to cut approx. 12 to 20 in. (30 to 50 cm) longer than the tubing length you estimate.

b)Remove burrs at the end of the copper tube with a tube reamer or file. This process is important and should be done carefully to make a good flare. (Fig. 42)

NOTE

When reaming, hold the tube end downward and be sure that no copper scraps fall into the tube. (Fig. 43)

c)Remove the flare nut from the unit and be sure to mount it on the copper tube.

d)Make a flare at the end of copper tube with a flare tool.* (Fig. 44)

(*Use “RIGID” or equivalent.)

NOTE

A good flare should have the following characteristics:

inside surface is glossy and smooth.

edge is smooth.

tapered sides are of uniform length.

5-3. Caution before Connecting Tubes Tightly

a)Be sure to apply a sealing cap or water-proof tape to prevent dust or water from getting into the tubes before they are used.

b)Be sure to apply refrigerant lubricant to the match- ing surfaces of the flare and union before connect- ing them together. This is effective for reducing gas leaks. (Fig. 45)

c)For proper connection, align the union tube and flare tube straight with each other, then screw in the flare nut lightly at first to obtain a smooth match. (Fig. 46)

Deburring

Before

After

Fig. 42

Copper tubing

Reamer

Fig. 43

Flare nut

Copper tubing

Flare tool

Fig. 44

Apply refrigerant lubricant here and here

Fig. 45

Union

Flare nut

Fig. 46

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Contents Installation Instructions ContentsWhen Transporting When Installing…Case of Improper Installation When WiringGeneral Installation Site Selection Additional Materials Required for InstallationOutdoor Unit Baffle Plate for the Outdoor Unit CL⋅⋅ models onlyKS1852 Case of right-rearRemove the Rear Panel from the Unit Make a HoleIf Wooden Wall Install the Rear Panel on the WallIf Block, Brick, Concrete or Similar Type Wall How to remove the grille Remove the Grille to Install the Indoor UnitHow to replace the grille Wiring Instructions General precautions on wiring Shape the Indoor Side TubingRecommended Wire Length and Diameter Wire from the outdoor unit to the indoor unitEach wire must be firmly connected No wire should be allowed to touch refrigerantKS0951, KS1251 KS1852 For Outdoor Unit For solid core wiring or F-cable How to connect wiring to the terminal For Indoor UnitFor stranded wiring Mounting Right-side tubingDrain Hose To unmount indoor unitRisk of Electric Shock How to Install the Outdoor Unit Examples of Incorrect WiringWiring Instructions for the Outdoor Unit ProblemFlaring Procedure with a Flare Tool Refrigerant TubingUse of the Flaring Method DeburringConnecting Tubing between Indoor and Outdoor Units Finishing the InstallationInsulation of Refrigerant Tubing After a tube has been insulatedAir Purging Hex wrench before Be sure to completely insertAttempting to turn the valve How to Test Run the Air Conditioner Pump Down Basic Function of the Service ValvesRing Valve cap Stem Remote Control Unit Installation Position When using the remote control unitWhen mounting the remote control unit to prevent theft Mounting on a Wall
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