• Revit

Create piping systems with analytical connections

Create a piping system with physical connections and review connection properties.

Type:

Tutorial

Length:

4 min.

Tutorial resources

These downloadable resources will be used to complete this tutorial:

ModelSysDsgn_RVT.3-01_2024.zip

Step-by-step guide

Create a piping system with physical connections and review connection properties.

  1. Open the project M03_01.rvt.
  2. Ensure that the current view is HVAC > Floor Plans > 1 – Mech.
  • The Revit interface, with the project for this example open to the 1 – Mech floor plan view.
  1. Select the heating flow and return pipes at the last radiator in the system to review the mechanical flow properties, which show 10 GPM based on a single radiator connected to the system.
  • In the model view, the flow pipe is shown as connected to the last radiator selected, and in Properties, the Flow value is highlighted in red.
  1. Using standard modeling techniques, connect the first radiator in the system to the heating flow and return pipes. The system names are HTG-F and HTG-R, and the connection height at the radiator is 18".
  • The first radiator in the system connected to the heating flow and return pipes.
  1. Select the heating flow pipe at the boiler to review the mechanical flow properties, which have changed with the addition of a second radiator to the system, connected through conventional means.
  • In the model view, the heating flow pipe at the boiler is selected, and the changed Mechanical – Flow properties are displayed.
  1. To add an analytical connection, select the heating flow pipe at the second radiator in the system.
  2. From the contextual ribbon tab, select Analytical Connections.
  • On the Modify|Pipes contextual tab of the ribbon, Analytical Connections is being selected.
  1. Select the second radiator, noting the addition of the analytical connection and the change in color to red.
  • In the model, a view of the second radiator, with the added analytical pipe connection, now colored in red.
  1. Select the analytical pipe connection and review the instance properties, which show the flow rate based on the value attributed to the radiator.
  • The instance properties for the analytical pipe connection, showing a Flow rate of 10 GPM.
  1. Access the analytical connection Type Properties to reveal additional information, including pressure drop.
  • The Type Properties dialog for the analytical pipe connection, showing a Pressure Drop of 0 psi.
  1. Using the same technique, connect the heating return pipe to the second radiator in the system.
  • The heating return pipe connected to the second radiator in the system.
  1. Select the heating flow pipe at the boiler to review the mechanical flow properties, which have changed again with the addition of the third radiator to the system, connected this time using analytical connections.
  • The heating flow pipe at the boiler selected, with the changed Mechanical – Flow properties.
  1. Select the boiler and note the total water flow in the system: a total of 30 GPM from the three radiators currently connected to the system.
  • The boiler selected, and in Properties, a total Water Flow of 30 GPM, highlighted in red.

Complete the system using analytical connections:

  1. Select the heating flow pipe.
  2. Click Analytical Connections.
  3. Select each of the remaining radiators in turn until the flow side of each one is connected.
  4. Repeat the process by selecting the heating return pipe and adding analytical connections to the return side of each radiator.
  • Selecting the final radiator to add an analytical pipe connection to the return side.
  1. Save the project.

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