Source google image: https://sites.google.com/site/drissabidi/_/rsrc/1468740859543/lregulations/Syst%C3%A8me%20Mortreux.JPG
Schema electrique regulation thermostatique
Source google image: https://sites.google.com/site/drissabidi/_/rsrc/1468740859543/lregulations/Syst%C3%A8me%20Mortreux.JPG