O2 Barrier

Simply Rad_2

I spoke to Viessmann and they said warranty is voided with barrier tubing. Tech said it would probably work but warranty is voided. HR Have you installed any stainless units you can use non barrier tubing.
Jeffrey

Simply Rad_2

O2 Barrier

I have a boiler replacement job coming up. The customer wants the best-mod/con wall hung unit first for efficienicy and second for space. The problem is that the orginal install used non-barrier tubing a Voyager heat source with cupernickle heat exhanger and Bronze pump. I talked to boiler manufacture and without O2 barrier there is no warranty. Now what are my options-a copper fin boiler?
Thanks Jeffrey

Darin Cook_2

Plenty of options

Use a flate plate heat exchanger to separate the boiler from the system.

Darin

Simply Rad_2

Flatplate is an option

Flatplate is definately an option but with a mod/con boiler you are losing efficiency. I guess in this situation you have to make due with what we have. A lesson to all USE barrier tubing!
Jeffrey

hr

A stainless boiler won't work?

With a stainles or bronze circ and one of the new expansion tanks that are coated?

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hr

I don't want to rock

the Viessmann boat by any mean. Depending on the load and flow rates you may find a small 30 gallon indirect would work if you do want to go flat. plate hX that is

I do know several of the other stainless mod cons are now listed for DHW heating use, so obviously O2 is not a concern.

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Simply Rad_2

Give me the mod/com

HR
Lately, I have only used the Vitodens so what mod/con manufatures are rated for DHW.
Thanks Jeffrey

hr

For sure

Munchkin is available in DHW versions. I've been told the Knight from Lochinvar is or will be very soon.

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