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emoncms / MyHomeEnergyPlanner

My Home Energy Planner - Open Source home energy assessment software based on emoncms framework + openbem
GNU Affero General Public License v3.0
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Adding a heating system breaks existing ventilation fans #425

Closed fawkesley closed 4 years ago

fawkesley commented 5 years ago

Steps to reproduce:

  1. Create a new assessment
  2. In the master assessment, navigate to Ventilation and Infiltration
  3. Change the system, from natural ventilation (NV) to Intermittent Extract Ventilation (IE)
  4. Add an Individual Intermittent Extract Fan - put it`s location as something like Bathroom
  5. At this point, preview the MHEP Report - you should see an entry under Energy demand (kWh.a) for Fans and Pumps of 28 and the same value for fuel input.
  6. Now navigate to Heating
  7. Add a heating system
  8. Use CMBB10: Typical Gas/LPG Combi Boiler with underfloor heating no storage
  9. Stick with the default values
  10. Again go and view the MHEP report - under Energy demand (kWh.a) Fans and Pumps is now blank and their Fuel input is 0.00

It seems adding the heating system overrides the fans. That said, if you navigate back to Ventilation and Infiltration the fan is still listed.

I tried populating the boiler info first but it had no effect. and i also tried not adding any fans and leaving it as natural ventilation, but it stills appeared to affect the calculations.