• 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.

  • RE: Hevacomp electrical Connect and Amtech difference

    Please note that further guidance on volt drop settings can be found here .

  • 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.

  • 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…

  • 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…

  • 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…

  • 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…

  • RE: Hevacomp - Design Database - Special Surface Types

    Hi Rob, By any chance is this a glazed door? Any door that is more than 50% glazed is considered a Window for PartL purposes. If you set a glazed area greater than 50% then we automatically treat this as a window when we pass it to SBEM. This is…

  • Inserting new floors, FFL incorrect within project!

    I am currently building a multiple storey warehouse style building with offices internal. The main space is mostly ground floor, with 1No First Floor office to one side, 1No Storage space to the other side and then 1st/2nd/3rd floors in offices in the…

  • RE: Change Pipe Height/Level

    Hi Myron, Changing heights of existing pipes is not possible I'm afraid, you would need to redraw the pipe in question. (Also, please note that if you have any future Hevacomp queries then the best place to ask for assistance is our Building Performance…

  • RE: Changes to Building layout

    Hi Clive, I suspect that your DXF background is not updating to your new layout due to the cache files within the project folder. If your new DXFs have the same name as the old ones then the cache files will be used. To display the new DXF, simply…

  • RE: Where are custom reports and cable files stored in V8i SS1?

    Hi Stuart, our guidance document on this matter should give you all the info you need - please find this here.

  • Part L (Simulation) not recognising changes made within Part L (Design Database)

    Hi have just been modelling a building - Level 5 EPC and I have been adjusting the air permeability and lighting information within Part L design database. Once I had the building 'passing' within Part L Simulation - I then went back into Part L design…

  • Frequency Simulation - Fresh Air Ventilation / Multi Zone Air Flow Model

    Hi All, I am carrying out a frequency simulation calculation and want to add in an amount of fresh air to see the effect this has on overheating - either via air change rate or fresh air for occupants. I know that the methodology for this is either…

  • RE: Floor Level Correction -

    The workflow for correcting a finished floor level can be found in our Support Solutions here: http://communities.bentley.com/products/building/performance/w/building_performance__wiki/11959.changing-floor-heights
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