1 Boiler for Both Radiant Heat and Hot Water Possible?
Hi everyone, we are in the process of rehabbing a house. We plan on installing radiant heat. Does it make sense and/or is it even possible to have 1 boiler preform both the heating for the radiant and for the bath/kitchen hot water? House is 1800 sq ft in total.
Closed heat exchange systems are always the LAST bad choice
[QUOTE=Dana;250054]Open systems are always bad idea, and not even legal in many states. (In MA, they're legal only with control provisions to circulate the water 5 minutes out of every hour 365 days/year to limit stagnation issues.) I'm not sure what the legal status is in NJ, but it's a recipe for water-borne health issues- if not this year, sometime down the line.
Go to RADIANTEC website and read about their preferred open loop system. In my not SHO, and based on many systems myself and thousands have done, this Voodoo about water borne illness is absurd. Absolutely off base and without merit. Water is always, automatically circulating through the loops,winter and summer. Does the mother of all world states, the oh so great MA. know more than the rest of the world? And tell me, in great MA. when gramma on chemotherapy goes to the upstairs guest bath in the far corner of the house that was visited a year ago, and takes a big swig of that fine closed loop "clean" water that sat in the pipe for all that time, what does she get? A big dose of regulated MA crud water that might kill her as she stands. Do they regulate the standing time of water in normal dead end plumbing systems?
You want to get sick and adore the fine Toto throne for a week or two? Just wait for the day when your inefficient heat exchanger leaks [a definite, given event] its closed loop slop silently into the regular system. Your intestines will try and wrap themselves around your knees. You'll need a 7 hp pressure washer in the bathroom - forget Terry's wash-o-let!
Got a house thats gonna freeze solid? Do a REAL closed radiant system all on its own with no exchangers and no connection to the potable and fill it with pipe compatible anti freeze.
I also see ast least 6 valves out of the 9 in the radiant company schematic that are not needed.
I think the guideline must remain KISS, or you end up with a SNAFU