Air in those lines aids in the way the pump works. It acts like a air bladder and you can run a bit of water without the pump kicking on. Those lnes should drain from the low point drains.
No man has a good enough memory to be a successful liar. Abraham Lincoln
2016 36FBTS Pinnacle
2016 F350, 6.7, 4x4, DRW, long bed
B & W Companion 5th wheel Hitch