You should never completely drain an above ground pool. The chemicals in the vinyl liner that allow it to stretch when originally installed do not last. If you drain the water, the liner will shrink and when you refill the pool there is a good chance that instead of stretching back the liner will rip instead. NEVER drain your pool.
6 inches below skimmer.
you should drain the pool and wash it out with a hose
Just enough so that the skimmer is above the water and the pipes to the filter and filter can be drained.
The condensate drain on the a-coil should have a trap and the trap should be vented for proper operation . The vent should rise above the top edge of the drain pan in the unit. Their should be a capped clean out before the vent.
It will be empty. Hope this helps.
When you have a spa used by the public you want to drain it often. The water in the spa should always be clear and clean.
no all you have to do is use a pump or the drain if the pool has one
No , above ground pools are different in that you can drain them , the reason you cannot drain an in ground pool is because the pool is built to have water pressure , and it is very stressful on the walls , I hope this answered your question :) .
Depending on where you live, you may want to totally drain an above the ground pool, especially if your area is prone to freezing temperatures. When such pool is not being used, it is always a good idea to cover it to keep dirt and leaves out. Yes, with continued use of chemicals. Otherwise, you're going to have a nasty mess to clean out come spring.
If there is no drain plug then you can use a sump pump.
No, unless there is something wrong with the water that can't be handled by the filter and normal chemicals.