Best Of
Re: Heat load calc( to pay, or not to pay)
As an engineer myself I understand wanting to trust your own calculations but unless you you have specific training in this field I'd pay someone to make sure I had not overlooked anything. $400 is literally a drop in the bucket, if your numbers are wrong, the fix could be orders of magnitude higher than that.
I would make sure whoever you hire has the expertise you need.
Bob
BobC
Re: Hydronic Snow Melt System in Toronto Questions
yes the farther down the tube in the assembly, the lower the output. Perhaps it can be accommodated with higher supply temperature. I can dig out some info on that tomorrow.
I would ask for an actual design. Most all the tube manufacturers will do a design with a software program.
Basically it comes down to the amount of snow and how quickly you want it to melt and be ice free. That is why there are different performance classes for SIM design.
You have one chance to get it right. Unless they have very short loops, I don’t see 1/2 Pex being a good choice.
hot_rod
Re: Hydronic Snow Melt System in Toronto Questions
The guide I attached should answer all the design questions and consideration?
Stamped concrete is another option, less installation work. And the tube would be placed about two inches below the surface. So probably a faster responding system. Unless you plan on ideling$$ the slab?
hot_rod
Re: Help Identifying Bathroom Faucet
panasonic is i believe making their own firmware and possibly control and signal processing hardware and they have documentation that is comprehensible. NEC was my favorite but they merged with sharp then disappeared.
mattmia2
Re: Hydronic Snow Melt System in Toronto Questions
have they performed a SIM design? What class system, how many btu/ sq ft, etc.
Generally 3/4” tube is used to move enough btus
It is not too hard to do a design yourself, then all contractors bid on the same, correct design.
hot_rod
Re: Jim Davis has passed
I'm sorry to hear of his passing. You always learned something new from whatever he posted.
mattmia2
Re: Jim Davis has passed
This sucks, Matt. We had a great group of all-in dedicated guys back then and we all learned from each other. The guys you mentioned, Darren, Mark Hunt, etc I haven’t spoken to in many years but my goodness the yelling and screaming we did back then, all in great fun. We socialized with Jim Davis and he scared the crap out of us some days. I became a good CO tech (testing, detecting, and eradicating) because of what he taught us. I know, I know: He would go head to head with the manufacturers but he could always back up his **** with test results.
Rest in Peace, Jim Davis.
JohnNY
Re: Stiebel Eltron heat pump water heater
My good friend Ed, I can assure you that they do pay for themselves. And this manufacturer going to the trouble and expense of installing an electric anode tells us that they expect their units to live longer than a traditional anode does.
Whereas, if you listen to what people write around here, you would think that every heat pump water heater seizes up after a year or two.
Re: Air eliminator location
Most manufacturers flow test their air separators at different operating conditions. Results show better efficiency and faster removal with microbubble type seps.
The tiny microbubbles that develop at the boiler wall need to combine it a large bubble before a scoop purger will grab and expel them.
Systems with chronic air problems do well with the microbubble removers. Withinan hour you should have complete air removal.
hot_rod
Re: Jim Davis has passed
Dont believe The Hype...Oops. ha ha Sorry Al. I owe you a Few rounds. "The reports of my death have been greatly exaggerated!" Mark Twain...Mad Dog
