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Hevacomp Wiki Connecting emitters to a reverse return system
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        • Changing the DXF background
        • Changing the snap grid
        • Connecting emitters to a reverse return system
        • Converting Flow Rates from Loading Units To Litres Per Second
        • Defining pipe headers
        • Duct sizing - allowing for a depression
        • Duct Sizing - Drawing an offset to avoid duct clashes.
        • Duct Sizing - Excessive Ductwork pressure due to Universal tees
        • Duct Sizing - Fitting, terminator and connection codes
        • Duct Sizing - How to connect a diffuser to the underside of a plenum box
        • Duct Sizing - Pressure drop considerations on outlets
        • Duct sizing - resetting the outlet references
        • Duct sizing - Roughness figures
        • Gas pipe sizing - Bouyancy and Residual Pressures
        • Gas pipe sizing - Changing surrounding temperature doesn't affect results
        • Gas Pipe Sizing - Diversity not included
        • Gas pipe sizing - Source pressure is considered when calculating Velocity
        • Heating and Chilled water - Excessive pressure drop
        • Heating and Chilled water - Higher than expected flow rates
        • How to add Floor Change Connectors
        • How to display Section Numbers on your Netsys system
        • How to fix a vertical pipe or duct
        • How to model angled riser with Floor Change Connector
        • Including Hot Water System feed in your Cold Water System
        • Inconsistent Flow Rate at Outlets
        • Netsys annotation - adding pipe or duct notes
        • Netsys annotation - displaying unusual results
        • Netsys annotation - Pipe properties tree
        • Netsys annotation - refreshing pipe or duct notes
        • Netsys warning - Closed loop found in system
        • Netsys warning - Insufficient Pressure
        • Netsys warning - No flow in pipe
        • Netsys warning - Spurious connection or 0mm Pipe size
        • Pipe and Duct fittings - K values
        • Pipe sizing - heating and cooling methods
        • Pipe sizing - how to add a CWS tank
        • Pipe sizing - Outlet resistance is considered in circulating pump sizing
        • Pipe sizing - Pipe diameters and insulation thickness
        • Pipe Sizing - Pipe lengths in reports
        • Pipe sizing - Pipe Sizing Standards
        • Pipe Sizing - Roughness figures and equivalent range selection
        • Pipe sizing - Special outlets cause excessive pipe sizes
        • Pipe sizing - Water content for heating and cooling emitters
        • Why can't the pipe or duct height be changed?
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    Drawing a Reverse Return Pipework System

       
      Applies To 
       
      Product(s): Hevacomp Mechanical Designer
      Version(s): V8i
      Environment:  N/A
      Area:  N/A
      Subarea:  N/A
      Original Author: Bentley Technical Support Group
       

    Overview

    The following are instructions and example of how to correctly draw a reverse return system in Netsys Heating.

    Method

    In Netsys Heating you must use a combined Flow & Return pipe to connect to Emitters. You cannot connect separate single flow and single return into them. The same applies to the System Marker which also needs to be placed on a combined Flow & Return pipe. As such when drawing a reverse return system you need to include some short sections combined Flow & Return pipe. You then connect the separate single flow and single return pipes into these combined Flow and Return pipes.

    Example - Small System



    Tip: When drawing and connecting single flow and single return pipes it is advised to use the Zoom > Regen option in order to confirm that pipes have been correctly connected.

    See Also

    Product TechNotes and FAQs

    Building Product TechNotes And FAQs

    External Links

    Bentley homepage

    HevacompMechanical Designer

    Bentley Technical Support KnowledgeBase

    Bentley LEARN Server

    Comments or Corrections?

    Bentley's Technical Support Group requests that you please confine any comments you have on this Wiki entry to this "Comments or Corrections?" section. THANK YOU!

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