Caleffi Solar idronics Journal

Metro Man

Kevin - I haven't read Caleffi's lit. yet but If you interface the furnace correctly and install a zone or check on the solar storage tank side installing on the hot side IS the correct placement.

Actually on the new furnaces that is the only place to install the coil unless you bypass the furnace completely via an air handler. If you where to install the coil on the return of the furnace then you would void the warranty of the circuit board that they all place in the blower compartment. Those are only rated to 120*F.

Not sure ANY solar system will function at a high % on a design day when heating with air.

Just the facts mam............

EDIT - Ok now I read the page... looks like they are also tempering the water down to a safe temp. Never thought that was a problem.. Storage tank gets to 180*F (high limit) furnace blower turns on @ XXX cfm .... I guess they are concerned that the air temps could get too high.. Never have seen that as an issue b4 but who's to say... Will have to try that one out. Typically during the heating months mean temp of the solar storage tank is around 150 ish. Really now that I think about it... not a bad idea. Problem is just one more thing to go wrong.. never liked mixing temps like that. I probably would stick a high limit in duct to kill circ pump.

Metro Man

ALH_4

idronics

There was some discussion about this journal a while back so I thought I would post the link now that it is available online. I havent had time to read it, but it looks like it has a lot of good info.

Caleffi idronics 3

Weezbo

Thanks.

now our work is starting to look smart *~/:) i hope every home that can have solar will have solar.. commercial and light industrial needs to upgrade to this century because sooner than later cost of doing business will be reflecting the fuel prices....what a deal Caleffi offers , sometimes one door closes and another one opens..i tend to think that Caleffi is propitious and piquant in this how am i doing ..., So far? *~/:)

Kevin_in_Denver_2

Sheesh

I was just curious as to how they would recommend doing a forced air system, so I skipped to page 25.

In what I would call a glaring error, they show the fan coil on the hot side of the gas forced air furnace. Don't do this at home... or ANY home for that matter. 'Cause you might heat up the solar tank with the furnace, and you sure won't get your tank down to 75F on a design day.