EcoRenovator - View Single Post - Desuperheater add-on for Mini-Split?

Xringer · 10-04-11, 11:03 AM

I've seen the copper prices.. Not good!
But, as I've said before, these types of HXs aren't super safe, if a pin hole develops in the barrier.
In the case of 4.3 pounds of R410A, that could dump ~500 PSI into my heating system.

The gas would bubble into my HS Tarm boiler, expanding in the heat and possibly
building up damaging pressure, before the T&P valve popped open.
The pressure would also be felt in the baseboards upstairs. Thin copper.
In the case of R-290, the risk of an HX cross leak would be unacceptable to most people.

So, the Bucket HX's double-wall construction seems most suitable to me.
The chances of high pressure refrigerant getting into the water loop are a million to one.
IMHO, Double-wall would be the only way to go, if you wanted to connect directly to your drinking water lines.

Cheers,
Rich

10-04-11, 11:03 AM	#10
Xringer Lex Parsimoniae Join Date: Feb 2009 Location: Woburn, MA Posts: 4,918 Thanks: 114 Thanked 250 Times in 230 Posts	I've seen the copper prices.. Not good! But, as I've said before, these types of HXs aren't super safe, if a pin hole develops in the barrier. In the case of 4.3 pounds of R410A, that could dump ~500 PSI into my heating system. The gas would bubble into my HS Tarm boiler, expanding in the heat and possibly building up damaging pressure, before the T&P valve popped open. The pressure would also be felt in the baseboards upstairs. Thin copper. In the case of R-290, the risk of an HX cross leak would be unacceptable to most people. So, the Bucket HX's double-wall construction seems most suitable to me. The chances of high pressure refrigerant getting into the water loop are a million to one. IMHO, Double-wall would be the only way to go, if you wanted to connect directly to your drinking water lines. Cheers, Rich