stee6043 said:
heaterman said:
Gooserider said:
It doesn't match the ASME boiler standard close enough in MA - as of the Boiler Rules meeting last week... A meeting that appears to have been conducted in possible violation of multiple MA ethics standards on conflict of interest, Open Meeting laws, and so forth, but that seems to be the way this state works...
As I understand the current situation, if you want to run a pressurized system in your house, you must purchase from Econoburn or Wood Gun, and pay the extra cost for the ASME stamp model. Euroboilers need not apply. However it does appear that if you want to run a "European open" style system where you "pressurize" the system by use of a water column going to an open tank at the top of the system, then there are no problems... I am told that it would theoretically be possible to build a system w/ an open column high enough to exceed safe boiler pressures and THAT would be "legal" but it would not be legal to make that system closed and operate at reccomended pressures... Gov't in operation, as usual...
Gooserider
One minor note: Econoburn is ASME approved period. There is no additional charge.
In Michigan, one of those "code" states, the boiler inspectors will accept the open system modification to an EKO or other pressurized boiler. The only caveat there is that you are now dealing with a piece of equipment designed to be "closed" and have it exposed to the atmosphere.
If it were me...disclaimer disclaimer...I'd setup the water column open-system for insepction purposes only. Close off a few strategically placed ball valves and run closed system for day-to-day operations....disclaimer disclaimer....
I don't see why... I can't think of any real advantage to running a closed system over an open one as long as the column is over about 25 feet or so, in order to get a boiler pressure in the 12-15 psi range (FWIW, I think I can get 30' in our house) a properly set up column should have very little evaporation, or heat transfer into the top expansion tank.
I'm also not sure that a savvy inspector would let you get away with it... There are a few differences in the setup that would make it obvious that you were trying to pull a fast one - a Euro-column setup does not need or have a use for, a conventional bladder expansion tank in the system, but an expansion tank is vital in a closed system - seeing a bladder tank would be a real red flag that something was odd. Also I would imagine that code would get very sticky about having valves in the line that would allow shutting off the column line to the tank. While in theory it shouldn't matter where in the system one tied into the column line, I suspect that code would require that line to be a direct run to the boiler room and be difficult, if not impossible to shut off w/o disabling the system... I'm not a code guy, but to me it's a pretty obvious thing to require...
Gooserider