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Old 12-08-2011, 11:39 AM   #21
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I guess I fail to see how their product is not a decent boiler. Ad I stated I have had no issues with their products. I have installed dunkirk boilers for years. Luke their product as well. But at the end of the day navien offers a better high efficiency unit.
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Old 12-09-2011, 12:32 AM   #22
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Default navien is not a boiler.

navien is not a boiler. except cc240, it does not bear h stamp and cannot be installed for space heating. even installation of this unit is a violation, and there is no need to discuss it further
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Old 12-09-2011, 01:32 AM   #23
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Cannot be installed for space heating... Funny that the code inspectors I have come across have all approved them no questions asked. Must be the code inspectors are into violating codes lmao.
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Old 12-10-2011, 09:23 PM   #24
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Default H stamp

To the best of my knowledge:
Section IV of ASME Boiler and Pressure Vessel Code requires boiler to bear h stamp. Section IV - Heating Boilers Provides rules for design, fabrication,
installation and inspection of steam generating boilers, and low pressure hot
water boilers that are directly fired by oil,gas, electricity, or coal.
I do not know about inspectors, but in USA ASME code is authority on boiler construction and standards
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Old 12-11-2011, 05:03 PM   #25
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Quote:
Originally Posted by gtmechanic View Post
navien is not a boiler. except cc240, it does not bear h stamp and cannot be installed for space heating. even installation of this unit is a violation, and there is no need to discuss it further
No it's the CH240 that has a ASME already, Navien states all CH sizes will be offered with ASME in Jan
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Old 12-11-2011, 05:21 PM   #26
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Default h stamp

Then it will become legal boiler. i think we have to stick to the rules, otherwise it will become a mess.
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Old 12-11-2011, 06:10 PM   #27
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Then it will become legal boiler. i think we have to stick to the rules, otherwise it will become a mess.
In the past regulators haven't been sure how to handle combi appliances so many were listed as water heaters
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Old 03-01-2012, 01:30 PM   #28
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I just got off the phone with a local plumber that wants me to help him out today with the install of a Navien CH180, 210 or 240 (I don't know what model he has coming). I've never done one of these and I've only installed one other Navien heater. I'm looking at the PDF manual right now. Is there anything I need to know (other than the customer shouldn't have bought a Navien)?







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Old 03-07-2012, 10:23 PM   #29
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I have done a bunch of the Navien water heaters and the Navien Combi boilers. I like these units very much. I have had no problems with these units. I think it comes down to the installer. Follow the install book and you should not have any problems
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Old 03-08-2012, 02:22 PM   #30
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I have installed several Navien before due to the lower price point, but they are nothing but problem for me and my clients. So many calls backs for little components going bad and the extra money I made from the lower price has translates to free service calls.........

I now install Noritz, great product great tech service, they recently came out with the support website support.noritz.com

Although I haven't done any boiler/radiant installation here in California, but I know Noritz offers wall hung tankless boilers in 2 sizes...
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