hOmeLabs HME030357N User Manual

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Step 2: Remove burrs

Burrs can affect the air-tight seal of refrigerant piping

connection. They must be completely removed.

1. Hold the pipe at a downward angle to prevent

burrs from falling into the pipe.

2. Using a reamer or deburring tool, remove all

burrs from the cut section of the pipe.

Pipe

Reamer

Point down

Step 3: Flare pipe ends

Properﬂaringisessentialtoachieveanairtightseal.

1. After removing burrs from cut pipe, seal

the ends with PVC tape to prevent foreign

materials from entering the pipe.

2. Sheath the pipe with insulating material.

3. Placeﬂarenutsonbothendsofpipe.Make

sure they are facing in the right direction,

because you can’t put them on or change their

directionafterﬂaring.

Flare nut

Copper pipe

4. Remove PVC tape from ends of pipe when

readytoperformﬂaringwork.

5. Clampﬂareformontheendofthepipe.

The end of the pipe must extend beyond the

edgeoftheﬂareforminaccordancewiththe

dimensions shown in the table below.

PIPINGEXTENSIONBEYONDFLAREFORM

Outer Diameter

of Pipe (mm)

A (mm)

Min. Max.

Ø6.35 (Ø 0.25”) 0.7 (0.0275”) 1.3 (0.05”)

Ø9.52 (Ø 0.375”) 1.0 (0.04”) 1.6 (0.063”)

Ø12.7 (Ø 0.5”) 1.0 (0.04”) 1.8 (0.07”)

Ø16 (Ø 0.63”) 2.0 (0.078”) 2.2 (0.086”)

Ø19 (Ø 0.75”) 2.0 (0.078”) 2.4 (0.094”)

Flare form

Pipe

6. Placeﬂaringtoolontotheform.

7. Turnthehandleoftheﬂaringtoolclockwise

untilthepipeisfullyﬂared.

8. Removetheﬂaringtoolandﬂareform,then

inspect the end of the pipe for cracks and

evenﬂaring.

Step 4: Connect pipes

When connecting refrigerant pipes, be careful not

to use excessive torque or to deform the piping in

anyway.Youshould�rstconnectthelow-pressure

pipe, then the high-pressure pipe.

MINIMUM BEND RADIUS

When bending connective refrigerant piping, the

minimum bending radius is 4 inches.

4in

Radius

Refrigerant Piping Connection

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hOmeLabs HME030357N Split Type Inverter Air Conditioners

User Manual - Page 40