Add on....

I know LL does an internal water coil but would this be better or worse.

http://cgi.ebay.com/ws/eBayISAPI.dll?Vi ... ide:3&rd=1

Across the front of my two Pokos that has a temp of just under 600F - I think I could run my now defunct spa (heater burned out), HW, perhaps some baseboard. The internal coil is appealing but what happens in periods on non use. Can any genius out there do the BTU maths.

Thx in advance.

DO a SEARCH on here on HOT WATER COIL or EXTERNAL HOT WATER COIL, been talked about and designed a few times on here. You can make one a lot cheaper. Any stove can have a COIL inside or outside. A lot of good ideas and photos.
They work good if you have a storage tank for Domestic, not real good for hot water baseboard, but in some case, could work.

Making a external DHW Coil

Home-made hot water collector finally in operation