Unregistered
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Posts:2321
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| 03/18/2005 4:53 PM |
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Does hydronic radiant heating require a separate boiler be installed?
Thanks,
Jeff
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Davee
Registered Users
Posts:25
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| 03/18/2005 7:38 PM |
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It depends on the heating load. I am heating one level of two 1120sq ft with the same hot water tank as I use for household requirements
It is 50 US gallon ,42,000 BTU unit. This is in an extreme cold climate, with ICF walls. We also are only a couple (kids gone) so shower hot water has never been a problem. This is with a Legalett air duct in concrete system developed in Sweden Check out www.legalett.ca |
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Unregistered
Registered Users
Posts:2321
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| 03/19/2005 12:15 AM |
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here's a link to your very topic!
http://www.healthyheating.com/bb/viewtopic.php?t=47
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radiantheatproducts
Registered Users
Posts:1
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| 03/21/2005 8:50 AM |
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Jeff,
The first thing you need to do is understand your requirements. How many square feet? What type of insulation? How many windows and doors in a given area? Ceiling Heights. All of this leads to your heat loss in a given space. Once you determine the loss then you can see what best fits your application.
The next step is to see what the codes are in your area. I hope it all works out for you.
Daryl High
President
www.radiantheatproducts.com |
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dpman
Registered Users
Posts:2
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| 03/23/2005 8:57 AM |
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It is possible to heat with a tank. Less expensive then a boiler yet it also may be a problem as the tank is not designed to be used this way. A water tank is designed to transfer the heat from cold to hot - hot water gets used, cold water comes in, the transfer of heat from hot to cold is quick. The problem comes into play when the water is already warm in the tank. The transfer of heat is not as quick, the aqua stat over heats as a result of not being able to dissipate the heat as quickly and excessive wear occurs. As a result, it may become brittle and fail. It is also not as efficient as the heat transfer is lost - it reduces the efficiency of the hot water tank. So it costs more money to run, and the lifespan is decreased. An inexpensive solution in the beginning? Yes. But how long will it last? Some units burn out within the first year.
Dave |
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Davee
Registered Users
Posts:25
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| 03/23/2005 4:59 PM |
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| I have used the hot water tank for two seasons --no problem-- as far as wearing out Aqua stat I don't quite follow. How is warm return water needing heat any different than water cooling off in a static (no flow) tank which requires heat. I guess it cycles on /off more often? Granted heat exchange to cold water will be more complete than to warm water before flue gases exit the tank . I would like to extend the heat removal with a second recovery device as it is quite hot at exhaust vent. |
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Unregistered
Registered Users
Posts:2321
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| 04/07/2005 3:49 PM |
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Thanks Guest #2,
The best article we have come across on this topic was an article written by Dave Yates, Master Plumber and owner of F.H. Behler, one of America's oldest plumbing and heating contractors...you can get the free article from the healthyheating link.
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Unregistered
Registered Users
Posts:2321
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| 04/28/2005 9:29 PM |
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How about a Seisco tankless heater for hydronic radiant heat. I plan to use these tankless heaters for my radiant and domestic water heating. No hot water tank to keep hot all the time. Just instant hot water when the pump calls for more water.
I think the SH-28 model will heat my floors and lesser models the kitchen, laundry room and bathrooms. No venting necessary, no gas in the house. The system can be installed after everything else is in.
I will be heating a 2 level SIPs home with an R value of 42 in most places.
argee |
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Unregistered
Registered Users
Posts:2321
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| 05/09/2005 8:00 PM |
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Daryl,
I have been looking at your web site (www.radiantheatproducts.com) and haven't seen anywhere that indicates assisting in system design. does your company provide that service?
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energyfan
Registered Users
Posts:2
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| 05/10/2005 4:55 PM |
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Design help from www.arit.com.
Call one of their reps.
Tom Boardman
229-387-8606 office homeΖD]
229-402-3624 cell
Tom
229-402-3624 |
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