Mr DavidDon't yell. Can hear you just fine but don't really understand what you are asking.
Tankless WH don't reduce PSI. there might be a little flow loss which would be the volume and the psi has a direct relation to the flow.
pressure drop usually occurs when some type of demand is put on the system like opening a faucet or flushing a toilet.
If you have a 3" line with 50 psi and you open a 1/2" port you're not going to notice much of a PSI drop, but if you open a 2" port then there will be a significant pressure drop.
If you're asking about flow then it all depends on size of piping and the amount of demand you want to achieve. .
That's why high demand commercial water heaters have 1 1/2" to 2" inlets and outlets to meet the flow requirement.
When you say tankless there are all kinds of tankless water heaters. and they are sized according to demand requirements
Mr David
in Hydro calc , I put zero loss
but the plan checker corrected that
tank less makes considerable pressure loss in the system
your answer to this question is still pending , misteryHI
WHAT IS APPOXIMAT./ESTIMATED PSI LOSS OF GAS TANKLESS WATER HEATERS ?????
THANK YOU
your answer to this question is still pending , mistery
Is an answer to your question still pending. Or is it still mystery?your answer to this question is still pending , mistery
Yeah I wish the OP's were required to respond and close out a question, one way or another.I was just trying to learn something about on demand heaters.
It appears from Jamesplumbing reply, that (contrary to fishscreeners reply) they may indeed have some type of valve on the water line to throttle the flow to meet temperature demand when needed.
What's your take on this Diehard.
As to the OP.... he seems kind of hard to deal with, since as MrDavid and you have pointed out, obviously different heaters (regardless of whether they use a valve or not) would supply different restrictions at a given flow.
OP = original posterI forgot to mention my brand of experience is Rinnai. I seen an eBay special the other day that had a manual flow restriction valve. But never never order an eBay special. No u l safety listing at all. I don’t know what an op is so not sure about that.
Wow! Some of these questions sure take off on tangents, don't they?
The OP left the scene weeks ago.
HI
WHAT IS APPOXIMAT./ESTIMATED PSI LOSS OF GAS TANKLESS WATER HEATERS ?????
THANK YOU
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