Most codes do not allow radiant and domestic to us common water. What do you think happens to the water in the loops in the summer when it just sits there for several months.
Thanks for the comments and advice, but, if you knew anything about an open system you would know that every time a hot facet is opened , fresh cold water is added to the floor. Hot water is drawn out of the water heater before the circ pump. If the circ pump doesn't run (summer), no hot water goes to the floor.
It's like this guys, I'm going to try it like this for a year or two and if it works out, all is good. If the water seems to get nasty, I'll convert to a closed system, and get a small point of use water heater for the sink.
Koditten,
The design phase is over for me. I will be putting my system in service this week. I think my system is well thought out and will have a better than average chance of working as planned.
I did read a lot here and other places. I understand about the water quality and germs in water not hot enough to kill them. It will not be a problem to flush the entire floor contents in a weeks time with just the sink. I use my shop a lot.
Actually I have considered just shutting the water heater off after heating season. Don't really need hot water in the summer months. I could flush it a few times during the summer to keep it fresher.
It seems to me the closed systems have a far better chance of going rank than a properly used open system. But I'm certainly not an expert, but I've read what a lot of experts have written.
