Automatic Connection Method for Revit Refrigerant and Splitter Pipe Sections

Automatic Connection Method for Revit Refrigerant Pipe to Splitter Pipe Section

The divergent pipe, also known as the central air conditioning branching pipe or splitter pipe, primarily connects the refrigerant pipe to the indoor air conditioning unit. It utilizes high-quality processed copper pipes as a single input in the refrigeration circuit, with multiple outputs at the other end. This design facilitates the accelerated circulation of refrigerant within the copper pipes, thereby achieving effective cooling.

When drawing refrigerant pipes, it is common practice to start from the source. This approach allows for easier placement of multiple splitter family components and smooth pipe connections throughout the circuit. Typically, the diameter of refrigerant pipes is DN50 mm.

However, when placing splitter family components in Revit software, the built-in tool “Trim/Extend to Corner (TR)” cannot automatically connect the refrigerant pipe to the pipe at one end of the splitter.

At this stage, a dialog box usually appears in the bottom right corner of the Revit interface, warning that pipe segments are being drawn from the wrong side to connect to the specified position.

In such cases, repeatedly using the standard trim tool (TR) will not resolve the issue. Continuing to modify the connections manually can be time-consuming and inefficient. So, how can this problem be solved? The following method provides a practical solution:

1. Select the Modify tab and choose the Split Elements (SL) tool. Use it to cut the refrigerant pipe section at two points near one end of the splitter family component, as illustrated below.
2. Remove the pipe section between the two cutting points on the refrigerant pipe.
3. Select the refrigerant pipe section near the splitter family component, then use the Align (AL) tool to align it with the splitter. After that, apply the Trim/Extend (TR) tool to automatically connect the two parts.
4. Draw two branch pipes with a diameter of DN50 mm at the other end of the splitter family.
5. Return to the refrigerant pipe at the two cutting points and connect the pipe segments you just drew.
6. Finally, delete the two cutting points one by one to restore a complete, continuous pipeline segment.

The final HVAC piping model after applying these steps looks like this:

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