Yeah, I was thinking that we would be awash in abundant hot water during the summer,
and could use it for a little heating during cold weather.
(Be great on laundry day)
That extra heating would be possible, if I didn't buy a new storage tank, but used the
old HS Tarm boiler (76 gallon water jacket), coupled to the old Sanyo, via a 'new' refrigerant-to-H2O exchanger.
What we've noticed when using the free-flow valve on the upstairs baseboards,
(without the circulator pump running) is anything over 100 deg F can provide
some pretty good heating.
I was a bit surprised. I figured they wouldn't be much heat, unless the water was over 140ish.
The heat transfer rate is pretty slow. But leave it on a few hours and it does add to the overall comfort,
especially in the Den (with all it's glass).
I have a (mostly unused) circulator pump for the basement baseboard loop.
(We have not heated the basement in the last 15 years).
With some 'T' connectors & cut-off valves, I could easily connect into the
Tarm water jacket, and use it's pump to drive a refrigerant-to-H2O exchanger. (1 SSR required).
The water in the jacket isn't real clean. So the exchanger should be a low-clog type.
Or, I could add a cleanable inline filter..
Do you have any suggestions for an Ebay exchanger?
In normal full power heat mode, this Sanyo is rated to produce 36,000 BTUh..
But, if I can control the unit, I would like to keep it under 10,000 BTUh..
Just let it run longer at lower power usage. (More compatible to PV)