bcr83 – the process of mediation in this case needs to be initiated by you (for $80), so if you’ve received a official NO to your request to install an air-conditioner in the manner and location that you prefer (and that’s an important point), then I’d suggest that you write to the Secretary of your Executive Committee and inform them that you intend to apply for mediation of the matter upon the expiry of 7 days from the date of your letter.
Then complete THIS form to commence the process, including preparing the arguments both written and visual that you intend to put forward in support of your point of view, bearing in mind that based upon my reading of your posts, your Executive Committee (E/C) hasn’t refused consent for you to install an air-conditioner, but has rather granted that consent based upon their interpretation of your Plan’s Special By-Law, about which you disagree on the grounds that its been inconsistently applied to past proposals and unreasonably applied to yours (?).
You may also find THIS information useful as an outline of what happens if mediation is unsuccessful, where as you’ll possibly conclude, your chances of having that air-conditioner installed at any location this year will be almost Nil; unless of course you decide to accept your E/C’s interpretation of that Special By-Law as an expedient means to fulfill your undertaking to your tenants.
There are other equally convoluted options available to you, but on my reading and interpretation of your posts, the one I’ve suggested is the one most appropriate.