It it not anyhow regulating requirements for ducted aircon installers.
Also, the standard itself seems to be a bit stupid as most people are simply opening up windows at night (in summer) or at day (in winter) to ventilate their houses (for short periods of time mostly). If you have a tight house, you won't be using your aircons days and nights for sure.
Regulation of ducted air conditioning installations still falls under the plumbing compliance board in each state as refrigerated air conditioning falls under plumbing.
The standard is what industry is required to be working to. Don't like it then give your feedback to a body like Airah for discussion and dissemination when reviewing and revising amendments to the standards.
If your shortsightedness of that of your architect means you didn't factor in ventilation requirements then you're stuck with opening windows for ventilation or need bite the bullet and get something like an ERV system.
I am struggling to understand what you mean here.
Here are my points, please let me know what exactly is not logical:
1) ERV system is a good thing to have, no doubts, but it is not definitely not installed by everyone and is not popular thing at all.
2) People in tight houses and in moderate climatic zones are certainly not using their 12kW+ ducted systems to ventilate their houses day and night, even if installer designed in outside ducts into the installation.
If your house is tight and well oriented, you would be running your ducted system may be few days a year if running at all.
3) So unless you have ERV, you are destined to open the windows (i.e. use natural ventilation) in order to ventilate the house.
1. ERVs are a bandwagon we are jumping on following the united states. There ERVs are popular as they have more focus on tight houses due to bitter cold winters or sweltering humid summers. In Europe and especially the united kingdom they suffer more from sick building syndrome from the tight buildings and lack of mechanical ventilation. The popularity and uptake is what is keeping the price of ERV systems where it is. With an increase in uptake and a broader choice in the market, the price of them will generally be driven down.
2. What do you think the fan only function is for? It's there so that those who want to use it will and those who don't wont. Rather than ducting from a grille to the return air plenum, fit an outside air fan to actively push air in to pressurize the plenum slightly and push that air into the conditioned space. If need be cycle the fan on from co2 sensors
3. See point 2