billhayton
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Any tips on where to install hot water recirculation pump...mfg. directions make it complicated
installing tankless with recirculating hot water
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Fidodie
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Please post a link to the manual - or at least give manufacturer and model, we'll find the link!
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Master Plumber Mark
Sensitivity trainer and plumber of mens souls
its pretty complicated
I have not heard many success stories with
doing a recirulaion line with a tankless heater
its about like threading a rope
through the eye of a needle
send a e-mail to Grumpy Plumber....I think
he had gotten his lumps with them
I have not heard many success stories with
doing a recirulaion line with a tankless heater
its about like threading a rope
through the eye of a needle
send a e-mail to Grumpy Plumber....I think
he had gotten his lumps with them
gmt
New Member
What type/ brand tankless w/h? What model recirc pump? Do you have a return line? Too many variables to address without more information...
FloridaOrange
Plumbing Designer
If you go to this webpage, its a pdf of Rinnai's installation manual. Page 33 is very similar to a system I designed for a condo a couple of years back.
Hope this helps. http://foreverhotwater.com/documents/1110101.pdf
Hope this helps. http://foreverhotwater.com/documents/1110101.pdf
billhayton
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installing noritz 931
Just read the post about rannai....
I like the idea of adding a small tanked water heater on the recirculated loop.
That seems like best idea
Unless you guys (or gals) have other ideas
Just read the post about rannai....
I like the idea of adding a small tanked water heater on the recirculated loop.
That seems like best idea
Unless you guys (or gals) have other ideas
You may also want to check your warranty. Most tankless manufacturer's drop their warranty severely when their product is used with a recirc system, whether it be closed loop or retrofit. Some by half, some by more than that. I believe Noritz drops to 3 years on some models for the heat exchanger.
billhayton
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thanks for reply
After much research yes your are right using any recirculated water with this tankless will cut warranty 7 years. However, the warranty does state if only potable, non recirculated water is used - warranty ok.
I believe I will put a check valve on hot side of unit then add 2.5 gallon hot water heater to recirculated loop.
Hot water 24hrs a day at every faucet, no extra wear and tear on tankless.
After much research yes your are right using any recirculated water with this tankless will cut warranty 7 years. However, the warranty does state if only potable, non recirculated water is used - warranty ok.
I believe I will put a check valve on hot side of unit then add 2.5 gallon hot water heater to recirculated loop.
Hot water 24hrs a day at every faucet, no extra wear and tear on tankless.
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