Vallox 51K MV

R model in the figure. In the L model, the parts are mirrored.

1
Extract air fan
2
Supply air fan
3
Fine filter for supply air
4
Heat recovery cell
5
Bypass damper of the HR cell
6
Coarse filter for supply air
7
Coarse filter for extract air
8
Post-heating resistor
9
Control panel (optional)
10
Internal humidity sensor
Internal carbon dioxide sensor
11
Humidity sensor (optional)
12
Carbon dioxide sensor (optional)
13
VOC sensor (optional)
14
Cooker hood
15
Damper button
16
Fan speed adjustment
17
Light switch
18
Ceiling bushing for electric wires (optional)