Basement dehumidifier Q

I need to hook up a dehumidifier to a pump so that it drains continually in our basement. Has anyone done this or had a plumber help them? We have a boiler, not a furnace. I just need to keep down moisture down in the basement, not the rest of the house. We have french drains down there, and they work, it's just residual humidity. If you've done this, will you let me know how? Thanks.