Heat pump sizing is now based directly on the same project's heat load calculation. Until now you had to import the results, and every later change to the calculation meant repeating that import. The module reads the calculation live instead.
New features
Pump sizing from the heat load calculation, no import. When you open the pump module you choose where the heat load comes from: the heat load calculation, or an estimate from the building's insulation class. Once linked, the building and room data stay current - a change in the heat load calculator shows up in pump sizing straight away.
A shorter path for linked projects. When a project uses a heat load calculation, the wizard has three steps instead of four: the building and rooms come from the calculation, and you only add what it cannot know - radiators and underfloor heating, bills, and the number of residents.
A loss breakdown next to every room. Alongside each room's verdict you see what its heat loss is made of: transmission, ventilation and thermal bridges. Instead of just "this radiator is too small" you get the reason - and an argument to use with the client.
The reasoning behind the capacity. The result shows the whole path to the selected pump: design load, margin, target capacity, the unit's output at the design outdoor temperature, and the headroom left. Next to it you get the basis of the calculation, the model confidence, and the specific heat loss.
Fast emitter entry. One click sets the heating type for the whole building - radiators, underfloor, or mixed - and you then adjust individual rooms.
Bivalent point. You can now set the outdoor temperature down to which the pump works alone - below it an electric backup makes up the difference. Sizing previously always assumed the pump covers the whole demand in the coldest hour of the year. On the reference building a bivalent point of -10°C picks a pump one class smaller, around 15 000 zł cheaper, with a slightly better SCOP and a backup running a few dozen hours a year.
The client's electricity price. The running-cost comparison now uses the client's tariff rather than a national figure.
Hot water in the sizing. If the pump also heats the cylinder, that duty is added to the required output.
Warnings beside the stepper. Result warnings are collected in one counter next to the wizard - the same control the heat load calculator uses - and each one links to the step that fixes it.
Improvements
- The PDF report states where the heat load came from - a full calculation to PN-EN 12831-1 or an estimate - together with the per-room loss breakdown when the project uses one.
- Underfloor heating reads the calculation live too, the same way the pump module does.
- Underfloor heating and room type straight from the calculation. Rooms marked as surface heating arrive with underfloor heating already selected, and bathrooms get the higher permitted floor temperature limit.
- Fewer questions about things already known. The module no longer asks for the distribution type or for building data the calculation already provides.
- The note about preliminary sizing is now a single line with a link rather than a block of text above the form.
Fixes
- The PDF report described the calculation method inaccurately when the heat load came from a full heat load calculation. The wording now matches the method actually used, in both modes.
- Model confidence could describe a result as fit for sizing even when the heat load came from an estimate.
- The "no pump in the catalogue reaches this capacity" message also appeared when the real cause was the supply temperature rather than the capacity.
- A project linked to a heat load calculation did not pick up the heated area, which left sizing unable to run.
- Renaming a room in the heat load calculator did not reach the pump module, so that room's load fell back to the estimated value.
- A linked project was sized for Warsaw's design outdoor temperature rather than the one the building was actually calculated at. The PDF report then stated a different temperature than the heat load report for the same building.
- Unlinking lost the design outdoor temperature, so a project re-calculated at a different temperature after unlinking than before it.
- Sizing gave no sign of oversizing. A pump delivering more than twice the demand was described as having "healthy headroom"; there is now a warning stating the ratio and suggesting a smaller model.
- The heat-source list and several catalogue pump names were shown in Polish in the English version too.
- A room with no emitter entered was shown as checked and green even though it could not be assessed.
- An account whose trial had ended could not download the PDF report on a linked project.