Introducing Our ECO dMEV+ & ECO dMEV+ LC👋 | Product Video

You've heard Larry & Jason talk about them, but here's our official product video to tell you all about how it works and why it could make the difference in your home or property.
The ECO dMEV+ has been designed and developed to offer the market a constant volume, continuously running decentralised extract fan to achieve the lowest power consumption, the lowest noise and the lowest life-cycle costs.
The ECO dMEV+ LC has been designed and developed to offer the market a centrifugal extract fan with optimum versatility to operate continuously or intermittently.
You can learn more about these fans on our website:
ECO dMEV+
www.envirovent...
ECO dMEV+ LC
www.envirovent...

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Recently had one of these installed in my flat by an electrician, however they installed it with non constant airflow setting with a high fan speed. I have tried taking it apart to get to the circuit section to adjust the speed but after taking the top plate and the filter off I am not sure where to go. I have tried to just pull the next section out but doesn't feel that brute force is the right way to go, not helped that there is a lose screw on one of the corners making me feel that the ceiling will come down before the next section does. Not the fans fault, just not great installation by the professional. I can see that there is a push in thing on one of the sides but that doesn't appear to loosen anything when pushed in as far as I can. Is there a latch or something I am missing to remove the last section to access the circuits? Am I meant to remove the middle section with the fan first? Have found the manual online but the instructions seem to be focused on how to adjust it when you are at that stage but not how to get there. I am sure it would make much more sense if I were the one to have installed it but having not seen that phase I feel I am missing vital information that would otherwise be obvious. Any help would be much appreciated.