IP22 Blue Smart 240V charger mounting position

I’ve just bought a IP22 20 A charger for a camper. The instructions mention that the charger should be mounted vertically. In my application that may be a little difficult & was wondering what effect it would have if it were mounted in a horizontal position.
Thanks Dennis

Hi Dennis. The manual stresses vertical installation because of the heat dissipation inside the unit. If mounted horizontally the components may heat up irregularly and not be able to cool efficiently with convection. I would suggest if you have no other way, possibly mount a cooling fan to force cool the unit if you have to mount it horizontally, but it is still not the best option as the warranty may be void if you run into issues.