hedgecutter
ArboristSite Lurker
I currently heat my 2600 sq ft house with a Shaver 165 using a 22"X22" three pass HX in my forced air system. The system is controlled with a simple two wire wall T-stat wired to a relay which pulls in the blower and water circulation pump when the T-stat calls for heat. The system works fine, except that my 1st floor, which is 900 sq ft, does not get very good air flow from the duct work. My house is a 1930's farm house with extensive remodeling except for the duct work. Any how, I am planning on installing radiant pex between the floor joists under the 1st floor. I have a full basement so easy access. The plan is to plumb into the OWF water to the new radiant pex header and loops to heat the first floor. I have limited knowledge on radiant pex heating so I am seeking your advice.
1. What size pex to use? 1/2? 3/4? 7/8? How far to space apart the lines?
2. Is is OK to plumb OWF water directly into the radiant pex or do I need to use a water-to-water HX?
3. What is the ideal or max loop length on the pex loops?
4. What is the max water temp I can run through the radiant pex which will be up next to my sub floor? I plan on using a "Temp Mixing Valve" plumbed from the return header to the supply header to control water temp.
5. Should I use the aluminum heat diffusion plates to hang the radiant pex in?
6. Planning on using a water pump tied to a fan control center and wall T-stat to control system. Does that sound reasonable?
And and all suggestions are appreciated
1. What size pex to use? 1/2? 3/4? 7/8? How far to space apart the lines?
2. Is is OK to plumb OWF water directly into the radiant pex or do I need to use a water-to-water HX?
3. What is the ideal or max loop length on the pex loops?
4. What is the max water temp I can run through the radiant pex which will be up next to my sub floor? I plan on using a "Temp Mixing Valve" plumbed from the return header to the supply header to control water temp.
5. Should I use the aluminum heat diffusion plates to hang the radiant pex in?
6. Planning on using a water pump tied to a fan control center and wall T-stat to control system. Does that sound reasonable?
And and all suggestions are appreciated