• MVHR Inlet/Outlet System Resistance

    I'm designing a MVHR system and would like to know how to calculate both the air intake and supply air / return air and exhaust air as separate systems. As you can only place a system marker at the end of each duct how do you achieve this using Netsys…

  • How to change "Emitter type" for water content estimation?

    https://communities.bentley.com/products/building/performance/w/building_performance__wiki/31381/pipe-sizing---water-content-for-heating-and-cooling-emitters On the page above it implies you can change emitter type for your water content calculation…

  • Heating Pipe Sizing in Netsys - Emitter Queries

    Hi, Its been a while since the last time I used Hevacomp so apologies if the questions seem trivial. I am trying to model a relatively large project, I have already placed all my emitters (some ceiling void, some floor level). When I try to connect…

  • Run Time Error 11 - Pipework sizing

    I have a run time error 11 appearing when sizing heating pipework in netsys. I had previously sized the system with no issue, however made some amendments and when re-running it the error has appeared. Could anyone assist as I currently can't access…

  • New Pipework type for Netsys, Heating

    Hi, Is it possible to have a new pipework type on NETSYS, heating? I need to use the attached details below for the modelling. Please refer to the attached file for reference. PDF Please, if you have other resources that you use with this type…

  • How do you change the height of an Emitter on Netsys heating and chilled water

    Could some one please help in how to change the height of an Emitter on Netsys heating and chilled water?

  • Error when running 'size duct' in Netsys

    Hi, I am getting an error when I try to size the system in Netsys Ductsizer. After drawing the system I am met with 'Duct with system marker is not the start duct for the system'. (See attached) I have tried putting the system marker in various…

  • Netsys - Unable to access file -> Vectors not read in

    Hi, I'm having an issue when setting up a Netsys calculation and Importing a DXF. I get a pop-up reading 'Unable to access file' followed by 'Vectors not read in'. This results in the DXF not being imported. I also set up a CIBSE gain calc and managed…

  • K VALUE FOR DEFAULT BENDS AND TEES

    Hi Understood the below links gives K-value for some of the fitting however, it doesn't show the assumed value for different default bends and tees . Please could you be able to post the k vale for the default connection fittings. i want to verify the…

  • MODELLING OF DUCT PASSING THROUGH RISER AT 45 DEGREE.

    HI I HAVE A DUCT PASSING VIA RISER FROM L1 TO L6 AT AN ANGLE OF 45 DEGREE OR SAY NOT IN A 90 DEGREE VERTICAL WAY. PLEASE COULD YOU BE SO KIND TO DEMONSTRATE HOW THIS CAN BE MODELED. MANY THANKS

  • Duct Sizing - How to connect a diffuser to the underside of a plenum box

    Product(s): Hevacomp Mechanical Designer Version(s): V8i (N/A) Environment: N/A Area: Netsys Subarea: Ductwork Overview Whilst designing a ductwork system it may be required to connect a ceiling…

  • Duct Sizing - How to draw an offset in Netsys

    This video shows how to draw an offset in Hevacomp Netsys

  • Netsys Duct at different height on same floor connection.

    Hi This is my first project in Netsys Ductwork Please could you be able to answer below questions 1) If you have two ducts at same height level and inter-crosses how do you design bends to avoid collision? 2) How do you model branching duct at…

  • Netsys warning - Closed loop found in system

    Product(s): Hevacomp Mechanical Designer Version(s): V8i (N/A) Environment: N/A Area: Netsys Subarea: N/A Problem When sizing a pipework schematic, you are presented with the following warning…

  • Netsys warning - No flow in pipe

    Product(s): Hevacomp Mechanical Designer Version(s): V8i (N/A) Environment: N/A Area: Netsys Subarea: N/A Problem When sizing a pipework schematic, you are presented with the following warning…

  • Copying CWS Outlets to HWS

    Is it possible to copy outlets between CWS and HWS in Netsys? This would save a lot of time. Thanks

  • Pipe sizing - Pipe diameters and insulation thickness

    Product(s): Hevacomp Mechanical Designer Version(s): V8i (version number) Environment: N/A Area: N/A Subarea: N/A Problem You may wish to consider pipe ranges in your project. This spreadsheet…

  • Duct Sizing - Excessive Ductwork pressure due to Universal tees

    Product(s): Hevacomp Version(s): V8i Environment: N/A Area: Netsys Subarea: Ductwork Problem Excessive pressure drops found upon sizing ductwork system. Solution Hevacomp will often automatically…

  • Hevacomp Mechanical Designer Course - London, May

    Hevacomp Mechanical Designer course now open for registration. This instructor-led, classroom-based course will cover all major mechanical design programs within Hevacomp, including: Design Database CAD Input Load Calculations Netsys Pipe…

  • Duct sizing - resetting the outlet references

    Product(s): Hevacomp Mechanical Designer Version(s): V8i (N/A) Environment: N/A Area: N/A Subarea: N/A Problem During the creation of a Ductwork schematic, deleting outlets can leave holes…

  • Netsys annotation - Pipe properties tree

    Product(s): Hevacomp Mechanical Designer Version(s): V8i (N/A) Environment: N/A Area: Netsys Subarea: N/A Problem Pipe properties annotation has been added. Solution Each section of the…

  • Netsys Chilled Water Pipe Sizing error/glitch

    Hi All, I'm trying to calculate the pressure drop for a chilled water system which starts with 250mm diameter pipe and reduces in size before it reaches the emitters. The issue i'm having is that even though I've fixed the pipework size for flow and…

  • Netsys - Splitting sections

    Good morning. This may be a function i am missing but is there a way to split pipe sections? I am creating a header pipe in Netsys Gas and the last part of the header always takes on the properties of the last connection. For example in the schematic…

  • Netsys is ignoring fixed duct sizes

    I am doing a ductwork pressure drop through Netsys. I have manually fixed the ALL duct sizes but the software appears to be selecting new ones in a number of instances. How can I stop this from happening? Many Thanks Craig

  • Hevacomp Mechanical Designer Course - London

    This instructor-led, classroom-based course will cover all major mechanical design programs within Hevacomp, including: Design Database CAD Input Load Calculations Netsys Pipe and Duct Sizing No prior knowledge of Hevacomp software required…
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