• 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…

  • 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…

  • 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…

  • 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 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…

  • 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…

  • Variable Flow systems in Netsys

    It's been some years since I used Hevacomp and am now considering purchasing for my mechanical team. Can someone explain to me if it is now possible to consider diversity and variable flow in the piped and ducted systems? If for example, we consider…

  • RE: Same Loading Units Different Flowrates

    For other users who may experience the above - this issue was due to different pipe sizing standards at each outlet. Please find further details here.

  • Inconsistent Flow Rate at Outlets

    Product(s): Hevacomp Version(s): V8i Environment: N/A Area: Netsys Subarea: HWS and CWS Problem Description Outlets in HWS or CWS systems may have differing Loading Units, despite the outlets…

  • RE: Pipework Velocities Input

    Hi Jamie, The CIBSE table is using typical bands therefore it would make sense to enter the highest CIBSE value for each band in the system marker. This limits the velocity for any sizes within that band. The settings shown below would meet that criteria…

  • How to display Section Numbers on your Netsys system

    Product(s): Hevacomp Mechanical Designer Version(s): V8i Environment: N/A Area: Netsys Subarea: All Overview Enabling section numbers can help to provide clarity when inspecting or troubleshooting…

  • Netsys annotation - displaying unusual results

    Product(s): Hevacomp Mechanical Designer Version(s): V8i (N/A) Environment: N/A Area: Netsys Subarea: Results Overview Duct or Pipe property notes show unusual or unchanging results when you…

  • RE: Heat loss calculation report showing a blank page. Running Windows 10

    Hi Luis, This usually means that Crystal Reports (i.e. the program that runs in the backround to take care of Hevacomp reports) is not working properly and needs to be reinstalled. Please find details on how to do so here.

  • Duct Sizing - Fitting, terminator and connection codes

    Product(s): Hevacomp Mechanical Designer Version(s): V8i (N/A) Environment: N/A Area: Netsys Subarea: Ductwork Overview A number of codes are used in Netsys Duct Sizing reports. While some…

  • Duct sizing - allowing for a depression

    Product(s): Hevacomp Mechanical Designer Version(s): V8i Environment: N/A Area: Netsys Subarea: N/A Overview During the course of designing a duct system (these techniques can also be used…

  • Troubleshooting

    Solutions to common issues

  • Hevacomp Dynamic Simulation

    Building simulation and load calculations

  • Netsys pipe types and sizes

    Netsys pipe types and sizes
    • Pipes.xlsx

  • Run time Error 482 after Windows 10 update

    Product(s): Bentley Hevacomp Version(s): V8i (V26) Environment: N/A Area: N/A Subarea: N/A Overview After a Windows 10 update, the software may generate Run Time Error 482 when attempting to…

  • Netsys Heating Connecting Pipe Header Problems

    When trying to add a pipe header into a Netsys project, firstly I can't seem to edit the length/size only the rotation and secondly once the header has been positioned and supposedly connected to the emitters and a system marker, it comes up with an error…

  • Including Hot Water System feed in your Cold Water System

    Product(s): Hevacomp Mechanical Designer Version(s): V8i Environment: N/A Area: Netsys Subarea: Pipework Design Overview Often as part of a Cold Water System (CWS) there will be a supply to…

  • Pipe Sizing - Roughness figures and equivalent range selection

    Product(s): Bentley Hevacomp Version(s): V8i (N/A) Environment: N/A Area: N/A Subarea: N/A Method The following figures are used by the Netsys Pipe sizing program. Range Roughness…
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