Heat Exchanger or auxilary water storage...one or the other?

[Scotty2]

I'm familiar with Seton/Greenwood style wood boilers with Heat exchanger...then to the radiant heat system. Do these type systems benefit from secondary water storage?
If so, would it be on the stove side of the heat exchanger?
Additionally, the current Greenwood states it's a gasification wood boiler...yet I don't see the secondary burn chamber in the schematic. What am I missing?
Regards, Scotty

 

[maple1]

Yes, no, and I haven't seen a current Greenwood schematic so I'm not sure.

 

[Scotty2]

http://www.greenwoodusa.com/frontier-series-indoor-wood-boiler.php
I couldn't figure out how to copy and paste the schematic...sorry.
I should note this appears to be an improvement (and a different company) than the original Greenwood, which at one time bought the rights to Fred Seton's stove plans..
Regards, Scotty

 

[maple1]

Looks like they have a burn chamber above the fire. Updraft vs. downdraft. No idea how good that works, I don't think I saw a separate air feed for that spot.

Maintenance is fuzzy & you can't d/l a manual there. From the info on the website, they want an authorized dealer to do all boiler maintenance aside from ash removal - and I think maintenance issues were also a PITA with the earlier one & Setons. I think that tube area might be hard to keep clean.