Radiant, Hot-water heaters, & Pennsylvania

Jamie_6

I have a small radiant job that requires 7,000 Btu's of 140 degree water for a Wirsbo Quick Trac job. I would like to use a 40 gallon hot-water heater with a flat plate heat ex-changer for the radiant side and a mixing valve for domestic use. I would like to know

1.Is this possible?

2. Has anyone done it?

3. Is it ASME compliant to do it this way?

Thanks agian,
Jamie

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Danfoss has

a nice HX package for that purpose.

You may not get to 140 on the B side however. Lots of water heaters these days won't go past 140 on their aquastat. With the loss through the HX you might not get the output needed.

Liability issues, I suppose.

hot rod

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Dave Yates (PAH)

been there done that

Yes, that can be done & we've installed several potable/hydronic systems utilizing a FP HX.

If you size your BB for 130 F, you'll be on target.

If the tank is an ASME model, that should cover your bases. There's a new PA boiler inspector serving our area, so it's once again a new ball game and another adjustment until we learn what particular items he deems important. If you have any doubts, I'd call them and ask for a determination in advance.

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