ᐅ Are the supply and exhaust air vents functioning properly?

Hello,

I have received the calculation for my mechanical ventilation system from the heating engineer, and he told me to consider where the vents should be placed.

I have marked it on my floor plan. What do you think?

Red = Exhaust air
Blue = Supply air
One duct per circuit

Spontaneously, I would say blue and red right next to each other!? That would cause the supply air to go directly into the exhaust air. Pointless!

Basically:
Living areas = supply air
Bathroom, kitchen, utility room, upstairs hallway possibly exhaust air
Where possible, I would place them close to the wall (at least 30cm (12 inches) away from the wall/corner)
Place supply air far from any door.

Where the red and blue circles are directly next to each other, the pipes run inside a cavity wall straight up to the attic. There are no diaphragm valves there. Diaphragm valves are only installed where there are single circles or at most two circles. I chose poor colors for the riser pipe.

Sleeping rooms, living areas: supply air, bathrooms, storage rooms, kitchen: exhaust air.

In principle, the farthest points in the room should always be chosen. Air transfer should occur through the door frame rebate, not under the door gap. Even better would be supply and exhaust air arranged room by room.

But this is actually the job of a planner.

Is there any issue with the plan? The thermostatic radiator valves and pipe layout were calculated by the heating engineer. I was only supposed to select the locations where they should be placed. I tried to follow the guideline of placing them 1m (3 feet) away from the wall to prevent significant air circulation along the wall, which helps avoid drafts, and as far away from the door as possible.

There are additional valves on the upper floor.

35 cm (14 inches) is more than sufficient, and it should be placed further away from the doors. You need to allow the room to be properly ventilated while, of course, ensuring that there are no windows nearby. Although with mechanical ventilation systems, windows are rarely opened.