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  • 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
  • RE: Hevacomp electrical Connect and Amtech difference

    Please note that further guidance on volt drop settings can be found here .
  • Hevacomp Dynamic Simulation

    Building simulation and load calculations
  • Very high CIBSE Solar Gains

    I modelled a simple 5mx5m glass box with no heat transfer across the floor or ceiling and I created a custom glass to replicate a Pilkington glass (U-Value of 0.6 and g-factor of 0.55). When I checked the solar gains using CIBSE Gains they were 10.8kW…
  • Netsys HWS Pipework Errors and Notes

    Hi there, I am struggling to find the faults with my HWS Netsys model. I keep getting different errors all over the system and some don't even make sense. One that keeps occurring on the same spot is 'spurious connection found', even though I…
  • RE: CIBSE Gain - Results Breakdown

    Matthew, you have probably turned on Temperature Rise in the Design Data tab. When you use Temperature Rise the individual loads are combined in the underlying equations and cannot be accurately split out afterwards.
  • 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…
  • Run Time Error 75 after applying Window 10 update

    Product(s): Bentley Hevacomp Version(s): V8i (N/A) Environment: N/A Area: N/A Subarea: N/A Overview After applying the Windows 10 update, and upon selecting a project to open, the file selection…
  • Issues Adding Roofs

    Hi, I'm having some problems adding roofs to my model. After extending the walls up to roof level large cutaways appear in the side of the building. I have created the roof in three parts accoring to which level it should attach to. The cutaways seem…
  • Floor Locations

    Good Afternoon All, Using Hevacomp design database (and CAD input) I have built a large 4 storey 'complex' building from the 1700's containing around 200 rooms, to get some idea of heat losses throughout the building. However, now the model has been…
  • Electrical Design, Strike programme, risk assessment always deems a system to be necessary and always indicates that no solution is available.

    Electrical Design, Strike programme, measures to protect against lightning. I have attempted to carry out a risk assessment and develop mitigation measures using this programme. However it seems that no matter which values I change the calculated risk…
  • Silent installation of Hevacomp v8i 26.0

    Hello, Can anyone assist with the silent installation of Hevacomp v81 26.0. I have found forum posts for Microstation, but not Hevacomp: http://communities.bentley.com/products/microstation/w/microstation__wiki/4170 I need to create a silent…
  • CAD Model Design - Gap Between Roof And Walls

    Product(s): Hevacomp Mechanical Designer Version(s): V8i (N/A) Environment: N/A Area: N/A Subarea: N/A Overview When modelling a roof in Hevacomp a space can sometimes appear between the roof…
  • 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…
  • How to Resolve the Run time error 11 when I try to view a model in 3D or Place a Roof

    When ever try to generate a 3D view of the object, whether that is using the 3D view tool or the roof tool, the software crashes and i get the message of run time error 11 Division by 0. Is there a way of solving this? Is it a Hardware or Software…
  • Why is Hevacomp not producing a .xml file for EPC?

    So I am using Bentley Hevacomp to create EPC's and then lodge them on the CIBSE lodgement portal. However, the Hevacomp on my PC is not producing a .xml file so I am having to jump onto my colleague's PC and get the .xml from there. Obviously this is…
  • CIBSE Gain Calculation - Load types

    Product(s): Hevacomp Design Database Version(s): V8i (N/A) Environment: N/A Area: N/A Subarea: N/A Overview The following is a breakdown of components that make up the gains in the CIBSE Heat…
  • RE: Uncontrolled heat gains

    Hello, Please post your second question regarding CIBSE Heat Gain to a separate thread and I will try to answer it there. With regard your question on Summer - The Summer calc uses Operative Temp as defined in CIBSE Guide A5 Section 1.2.2. This equates…
  • Why is the Hevacomp BRUKL Document not showing Solar Thermal Systems?

    Hi, Please would someone be able to help me. I have been trying to complete an SBEM for a client and this one part of the BRUKL document won't show up when I run the compliance section of the Part L in Hevacomp. On the roof of the building in question…
  • RE: Hevacomp Zone definition

    Hi, The best way to zone your building largely depends on what results you require. The following excerpt from the manual may help to clarify: Rooms can be placed in particular zones and floors so that zone and floor sub-totals can be selected and…
  • Hevacomp pipe database size

    We are having problem with the hevacomp software. There are no pipe sizes greater than 500mm in the software database. This is a problem as we have pipes installed within the systems we are trying to model which are 600mm and above. Can you please provide…
  • RE: Level 5 DSM SBEM & EPC; .

    Hi Shaun, to simulate the atrium space you would need to draw the rooms as usual, but name them according to your Atrium Keyword (in Simulator > Design Data > Atrium Spaces). For Example if your keyword was ATRIUM, then the rooms should be named ATRIUM…