My wood boiler system is set up as supply and return piping. I have 500 gallons of pressurized storage and a loading valve /pump behind boiler to maintain minimum temp into boiler. A 1 1/4 supply /return main line runs from boiler to storage. A supply and return 1 1/4 line ties in to main line between boiler and storage that runs to a manifold system with pump control of the various zones which is radiant in the walls. I run about 110 - 145 degree water in zones based on outside temps . When charging storage the flow runs one way to storage tank and when drawing off storage flow runs from tank to supply for heat zones and system can provide heat to house when storage is charging. I have loading valve that prevents flow thru boiler when fire is out. The system works great, usually only 1 fire per day is needed here in Missouri .
Im adding a condensing LP boiler to my system as back up (and future heat when I can't do firewood). The LP boiler will be located next to the storage tank. I set up my my plumbing based on adding LP boiler in future based on some diagrams from HS Tarm 12 years ago.
My storage tank has 2 connection ports adjacent to each other at top of tank with shut off valves. One top port is already in use for my system but the other is available for use . The return line that runs to bottom of storage has a Tee connection point with future piping being able to bypass storage tank at this Tee.
I want to bypass storage tank with LP boiler using hydraulic separation, but Im second guessing my plan based on the older Tarm diagram. if I could tie in with LP boiler hot supply on the available port at top of storage and at the return pipe at available port at Tee bypassing storage tank I wouldn't have to drain and soldier new Tees to tie into my existing system piping. I have threaded valves waiting to tie into in this supply and return .
My question is this :
In theory, would I achieve desired hydraulic separation if the hot supply from LP boiler basically enters in and immediately flows out top of storage tank and return line to LP boiler bypasses the storage tank at bottom Tee as if flows to LP boiler? Any water heated by LP boiler in storage tank would still be available for use for heating system so it wouldn't be wasted but I obviously don't want return line to LP boiler sucking off bottom of a cold storage tank. I will install a pump from LP boiler to the system piping and controls that have LP boiler only run when house calls for heat I have an aqua stat about 1/5 way down storage tank so that if tank is hot lp boiler won't fire. I thought a spring check in the pump wold keep water from flowing thru LP boiler when not in use.
Sorry for long winded post and maybe over thinking this! Any thoughts are appreciated ! Thanks for reading.
Im adding a condensing LP boiler to my system as back up (and future heat when I can't do firewood). The LP boiler will be located next to the storage tank. I set up my my plumbing based on adding LP boiler in future based on some diagrams from HS Tarm 12 years ago.
My storage tank has 2 connection ports adjacent to each other at top of tank with shut off valves. One top port is already in use for my system but the other is available for use . The return line that runs to bottom of storage has a Tee connection point with future piping being able to bypass storage tank at this Tee.
I want to bypass storage tank with LP boiler using hydraulic separation, but Im second guessing my plan based on the older Tarm diagram. if I could tie in with LP boiler hot supply on the available port at top of storage and at the return pipe at available port at Tee bypassing storage tank I wouldn't have to drain and soldier new Tees to tie into my existing system piping. I have threaded valves waiting to tie into in this supply and return .
My question is this :
In theory, would I achieve desired hydraulic separation if the hot supply from LP boiler basically enters in and immediately flows out top of storage tank and return line to LP boiler bypasses the storage tank at bottom Tee as if flows to LP boiler? Any water heated by LP boiler in storage tank would still be available for use for heating system so it wouldn't be wasted but I obviously don't want return line to LP boiler sucking off bottom of a cold storage tank. I will install a pump from LP boiler to the system piping and controls that have LP boiler only run when house calls for heat I have an aqua stat about 1/5 way down storage tank so that if tank is hot lp boiler won't fire. I thought a spring check in the pump wold keep water from flowing thru LP boiler when not in use.
Sorry for long winded post and maybe over thinking this! Any thoughts are appreciated ! Thanks for reading.
