12
Flaring Process
Bending Pipes
1. Hold the pipe downward to prevent cuttings from entering the pipe.
2. Using an appropriate tube cutter and deburring tool, cut and deburr the refrigerant pipe.
3. Remove the flare nuts at the stop valve of the outdoor unit and inside the accessory
bag of the indoor unit, put them onto the refrigerant pipe as shown below then flare the
refrigerant pipe with a flaring tool.
4. When flaring copper tubing, only use flaring tools that utilize an orbiting mandrel and
clutched handle. These are typically referenced as R410A flaring tools which will create a
45° flare. By using this type of flaring tool, the copper tubing is rolled while being pressed,
thereby reducing the probability of copper flare cracking.
5. Check if the flare part is spread evenly and there are no cracks.
1. Use a refrigerant pipe bending tool to shape refrigerant piping; smaller diameter piping
may allow for light hand bending, providing minimum diameter of 6 inches.
2. Do not bend the pipes in an angle more than 90°.
3. When pipes are repeatedly bent or stretched, the material will be prone to damage, which
may lead to refrigerant leaks. Do not bend or stretch the pipes more than three times.
4. Do not bend the pipe while insulated. First, cut the insulation with a sharp cutting tool and
expose it to the appropriate bend radius, as shown below. After bending the pipe, replace
the insulation and seal it with pipe wrap tape.
Extend the pipe by unwinding it
Installation
