The heating system does not fit into the utility room as planned

Hello,
after we have already been annoyed several times by the working methods of our construction manager, there was the next disaster over the weekend.

Our heating system was installed.
Unfortunately, its dimensions do not match those of the planning. As a result, the heating unit now not only partially covers the window, but it also cannot be fully opened.

According to the plan, the heating system is positioned so that there is enough space at the window.
The construction manager created the planning and the tender and presented it to us for signature; we commissioned the heating system.
Now it turns out that it does not fit.

The construction manager refers to the fact that his drawing is only schematic.
Enough to be upset about.
To what extent there is a planning error here has yet to be clarified.
Do you have to accept something like this? The actual dimensions differ from those in the plan.

My main question now is, if we have to deal with all this as it is, then we need to carry out damage limitation:
The heating system is positioned angled in the back right corner in front of the window with a distance of about 70 cm to the outer wall. Next to the heating system towards the window, an expansion vessel and a filling station for the outdoor module are installed.
If these were relocated to another location, one could, if at all possible, turn the heating unit and place it directly against the outer wall. (There would theoretically be enough space. The heating system is 70 cm wide, the space is 80 cm.
Is this even possible? Can these two elements, the expansion vessel and the filling station, be relocated?

Thank you in advance for your advice.

Regards, Franzi

Hello,

usually, the expansion tank and filling station can be positioned freely; nothing stands in the way of relocating them.

A picture or a plan would be helpful though, as we cannot know how it looks on your end....

Do you otherwise have concerns about ventilation? Our utility room has no windows at all. Holes were drilled at the top and bottom and plastic air ducts were installed. These are always open. I don't feel like ventilating the utility room every day. And I don't want to live in there because of the daylight... personally, I would find such a planning error in the house more annoying.

Attached is our plan, the current location of the heating system is marked in red, the expansion tanks etc. are within the green circle.

Do you have to accept something like this? The actual dimensions differ from those in the planning.

In my opinion, yes. This is not an execution plan.

If you were to relocate this to another site, you could, if at all possible, rotate the heating system and place it directly against the outer wall. (Theoretically there would be enough space. Th

Rotating heaters is always a tricky thing. Sometimes there are defined working spaces to the left/right of the devices that must be observed. Distances to the rear etc. also play a role. Usually the manufacturer provides information about this in the installation manual.

On the other hand, the position of the filling station or the external expansion vessel is more flexible.

By the way, your photo of the situation is not really helpful.

What kind of heating system is this?

In my opinion, yes. This is not an execution plan.

Rotating heaters is always a bit of an issue. Sometimes there are defined working spaces to the left/right next to the devices that must be observed. Distances to the rear, etc. also play a role. Usually, the manufacturer provides information about this in the installation manual.

In contrast, the position of the filling station or the external expansion vessel is more flexible.

By the way, your photo of the situation is not really helpful.

What kind of heating system is that?

Vaillant Set 4.47 fexoCOMPACT VWF 88/4 with aroCOLLECT Air/Water