I built a very nice ICF home with radiant floor heat (Propane boiler heat) and ductwork for a future water to air geothermal system for future heating and cooling. Installed 2 closed loop geothermal systems: one is a large hole excavated 6' deep with 10,000 feet of 3/4" poly pipe in a closed loop "slinky" style covering the bottom of the hole then buried, all connected with a 2" supply and return line to my mechanical room. The second consists of 5,000 feet of 3/4" poly pipe in a closed loop at the bottom of 5 trenches each approximately 120' long and at least 8' deep and 3' wide having 1,000 feet of the "slinky" style 3/4" pipe in the bottom of each trench connected by a 1/14" supply and return line to my mechanical room. I should have enough geothermal heat/cold exchange capacity. They have been pressure tested and are filled with a 40/60 glycol water mixture.
I acquired 2 used geothermal water to air furnaces. Brand: WaterFurnaces, model: Envision, from someone who was just going to trash them because his field system was not large enough to handle the geothermal loads. I assume they still work - just need some basic knowhow on hooking these WaterFurnaces up properly. One is a 6 Ton unit I will connect to my main floor ductwork, the other is a 4 Ton unit I will use for the basement. They will both be in the mechanical room where the supply and return lines are from the 2 field geothermal system. The idea is to get these 2 Waterfurnaces running and use my radiant floor boiler heat as a supplemental heat source as needed.
I can get the piping, circulation pumps and the waterfurnace ductwork setup properly, just need some tech assistance hooking up the 2 Waterfurnaces. Cannot seem to find anyone locally with the knowhow with these systems or even a user's manual online. Looking at the schematics on the furnaces it looks fairly doable, just need some basic guidance. Any help would be appreciated.
Thanks!
I acquired 2 used geothermal water to air furnaces. Brand: WaterFurnaces, model: Envision, from someone who was just going to trash them because his field system was not large enough to handle the geothermal loads. I assume they still work - just need some basic knowhow on hooking these WaterFurnaces up properly. One is a 6 Ton unit I will connect to my main floor ductwork, the other is a 4 Ton unit I will use for the basement. They will both be in the mechanical room where the supply and return lines are from the 2 field geothermal system. The idea is to get these 2 Waterfurnaces running and use my radiant floor boiler heat as a supplemental heat source as needed.
I can get the piping, circulation pumps and the waterfurnace ductwork setup properly, just need some tech assistance hooking up the 2 Waterfurnaces. Cannot seem to find anyone locally with the knowhow with these systems or even a user's manual online. Looking at the schematics on the furnaces it looks fairly doable, just need some basic guidance. Any help would be appreciated.
Thanks!
