"Now, about this floor drain -- I have no idea where it goes, but am fairly certain that it does *not* go to my sump crock, which I believe to be a good thing. It looks like it may head to my soil stack. However, the thing that has me concerned is that there is always air coming from the drain -- like a solid stream of air. The air has a very slight musty smell, but nothing bad. On occasion, the air gets a terrible smell to it and when it does, I pour a few gallons of water down it and that takes care of it. I've been told that my traps could be drying out once in a while, although there is no basis for that claim."
In order for air to be coming out of the drain the traps necessarily cannot be sealed. (A trap full of water does not allow sewer gas or air through it) Very possible you have a stormwater system there and you are going into that.
Try this open a cleanout in the soil stack and get the wife to run a garden hose through the drain in question. If you can tell water is flowing through the drains leading to the sewer go ahead and drain to that trap. However do not directly tie down into the drain you need an air gap. End the pipe a couple of inches above floor level and allow it do dump into that (This is how most commercial kitchens are done) To get a little closer and avoid splashing cut the end of the pipe at an angle and let the tip come very close to floor height. Do not use a trap coming off your sink in this instance, just a straight pipe.
Now with the new bar sink tied to the drain the traps drying out will no longer be an issue.
In order for air to be coming out of the drain the traps necessarily cannot be sealed. (A trap full of water does not allow sewer gas or air through it) Very possible you have a stormwater system there and you are going into that.
Try this open a cleanout in the soil stack and get the wife to run a garden hose through the drain in question. If you can tell water is flowing through the drains leading to the sewer go ahead and drain to that trap. However do not directly tie down into the drain you need an air gap. End the pipe a couple of inches above floor level and allow it do dump into that (This is how most commercial kitchens are done) To get a little closer and avoid splashing cut the end of the pipe at an angle and let the tip come very close to floor height. Do not use a trap coming off your sink in this instance, just a straight pipe.
Now with the new bar sink tied to the drain the traps drying out will no longer be an issue.










I had no idea that there was even supposed to be water in those things!







