Amateur Piping Diagram for Critical Responses!

David_24

I have the boiler piping schematic roughed out for a house I built for myself. The house is 1500 sq.ft on 3 levels - the SlantFin software says about 18,000 BTU/hr loss. I attached the diagram which was drawn to be a physical placement diagram of the components in the mechanical area - scale is 3"/square - the actual area is just over 9' wide. There are still some items to ad, such as taps for purging and draining. The system uses 3 boilers (electric dual fuel, propane, and future outside wood boiler connected with heat exchanger). Domestic hot water is by indirect water heater, fired from any of the boilers. The lowest level concrete floor has Wirsbo PEX tubing within (slab insulated from ground), and the upstairs baseboard radiation is fed with Pex-Al-Pex tubing on a "home run" layout. The outside wood boiler will use a heat exchanger, allowing the water supplies from both systems to be isolated, although water supplies in both systems will be closed-loop antifreeze loaded. Darker lines are 1" pipe. Anyone not familiar with "Dual Fuel Electric Rates" in MN - 3.7c/kwh on a radio meter, but only turned off at breakfast hour and dinner hour - otherwise on all day and night. I think propane would have to drop to 60c/gal to be a better deal.
SO - I hope a few of you pros will take a look - don't be nice - if you see problems, I'd surely like to know before I do it in copper !!! I included a photo of the place I built here, too.

David

David_24

Amateur Piping Diagram - Critical Input Requested!!

I have the boiler piping schematic roughed out for a house I built for myself. The house is 1500 sq.ft on 3 levels - the SlantFin software says about 18,000 BTU/hr loss. I attached the diagram which was drawn to be a physical placement diagram of the components in the mechanical area - scale is 3"/square - the actual area is just over 9' wide. There are still some items to ad, such as taps for purging and draining. The system uses 3 boilers (electric dual fuel, propane, and future outside wood boiler connected with heat exchanger). Domestic hot water is by indirect water heater, fired from any of the boilers. The lowest level concrete floor has Wirsbo PEX tubing within (slab insulated from ground), and the upstairs baseboard radiation is fed with Pex-Al-Pex tubing on a "home run" layout. The outside wood boiler will use a heat exchanger, allowing the water supplies from both systems to be isolated, although water supplies in both systems will be closed-loop antifreeze loaded. Darker lines are 1" pipe. Anyone not familiar with "Dual Fuel Electric Rates" in MN - 3.7c/kwh on a radio meter, but only turned off at breakfast hour and dinner hour - otherwise on all day and night. I think propane would have to drop to 60c/gal to be a better deal.
SO - I hope a few of you pros will take a look - don't be nice - if you see problems, I'd surely like to know before I do it in copper !!! I included a photo of the place I built here, too.

David