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  1. #66
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    Default Re: Thermal expansion tank and pressure

    Bradford White
    If this water heater is installed in a closed water supply system, such as the
    one having a back-flow preventer in the cold water supply, provisions shall be
    made to control thermal expansion. DO NOT operate this water heater in a
    closed system without provisions for controlling thermal expansion. Your
    water supplier or local plumbing inspector should be contacted on how to
    control this situation


    Inspection Referral
    Jim Luttrall
    www.MrInspector.net
    Plano, Texas

  2. #67
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    Default Re: Thermal expansion tank and pressure

    Quote Originally Posted by Jim Abram View Post
    Jerry - Where is this in the IRC ?
    Jim,

    I have posted it many times previously, maybe even in this thread.

    When I get back I will post it again ... unless someone else posts it before then.

    Jerry Peck
    Construction/Litigation/Code Consultant - Retired
    www.AskCodeMan.com

  3. #68
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    Default Re: Thermal expansion tank and pressure

    Quote Originally Posted by Jerry Peck View Post
    Jim,

    I have posted it many times previously, maybe even in this thread.

    When I get back I will post it again ... unless someone else posts it before then.
    Yes, you have posted it many times. Several times just for Jim's benefit. Is there really any benefit in posting it again? Will this be the last time he needs to be shown? Is that not just feeding?
    If you think that just one more time will do it, then .....

    Added in edit

    I think there are 3 types of questioners
    The first type are people that do not know and are looking for an answer. Not fully understanding, they often have follow up questions. This type of questioner is the basis of education and understanding, therefore discussion is welcome.

    Then there is the type of questioner that think they know, but unknown to them, they are misinformed or do not fully understand. To overcome there misconception, there will be much discussion and debate before they have a better understanding. This is still productive discussion.

    Then there is the type that just refuses to accept. This type often has follow up questions that are irrelevant, repetitious, or just out of order. Questions are answered, evidence submitted, but still they refuse to accept.
    At first, the questions appear to be genuine, so an answer is given. Many times the same question (or statement) is made, and answered several times. Much time is wasted responding to; false, misleading, and irrelevant statements.
    This hardly ever results in a constructive discussion.

    Last edited by Rick Cantrell; 05-26-2014 at 08:00 AM.
    ' correct a wise man and you gain a friend... correct a fool and he'll bloody your nose'.

  4. #69
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    Default Re: Thermal expansion tank and pressure

    Quote Originally Posted by Rick Cantrell View Post
    You keep wanting to find a way out.
    You say it's in the manual, show me.
    Not sure what your point is...


  5. #70
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    Default Re: Thermal expansion tank and pressure

    Quote Originally Posted by Ian Page View Post
    Not sure what your point is...
    I don't mean to be short with you, but;
    I think that every "What if", "But", and "exception" was thoroughly explained, along with providing supporting codes and requirements, to answer any/ all questions you had.
    Therefore, I'm not going down that road again.

    ' correct a wise man and you gain a friend... correct a fool and he'll bloody your nose'.

  6. #71
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    Default Re: Thermal expansion tank and pressure

    Quote Originally Posted by Rick Cantrell View Post
    I don't mean to be short with you, but;
    I think that every "What if", "But", and "exception" was thoroughly explained, along with providing supporting codes and requirements, to answer any/ all questions you had.
    Therefore, I'm not going down that road again.
    Oh....
    But it still doesn't change my mind about the sales pitch method of the plumber, which called into question the actual need for the expansion tank in the first place. And...being that they are rarely installed here, even by plumbing companies installing replacement water heaters, irrespective of code or supportive recommendation.


  7. #72
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    Default Re: Thermal expansion tank and pressure

    Quote Originally Posted by Ian Page View Post
    Oh....
    But it still doesn't change my mind about the sales pitch method of the plumber, which called into question the actual need for the expansion tank in the first place. And...being that they are rarely installed here, even by plumbing companies installing replacement water heaters, irrespective of code or supportive recommendation.
    Sadly, I feel as though I have failed.

    ' correct a wise man and you gain a friend... correct a fool and he'll bloody your nose'.

  8. #73
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    Default Re: Thermal expansion tank and pressure

    Quote Originally Posted by Rick Cantrell View Post
    Sadly, I feel as though I have failed.
    No...quite the opposite. You, and others have brought to my attention a piece of equipment I was not altogether familiar with. In reading the comments, looking on line and other research I feel I am better equipped to evaluate the need and provide appropriate advise to clients.


  9. #74
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    Default Re: Thermal expansion tank and pressure

    Quote Originally Posted by Ian Page View Post
    Oh....
    But it still doesn't change my mind about the sales pitch method of the plumber, which called into question the actual need for the expansion tank in the first place. And...being that they are rarely installed here, even by plumbing companies installing replacement water heaters, irrespective of code or supportive recommendation.
    Ian,

    I've addressed the above many times - when HIs bring items up with code officials in a non combative manner and seek input from code officials, it is surprising how often items which were previously not addressed by code inspectors or code officials begin to be addressed.

    That has happened in many localities across the country and could very well happen in your area if you so choose.

    Sitting back and saying 'well, it's not done that way here' does nothing to help change what is done there.

    Get to know the code officials and inspectors in your area, learn from them while at the same time educating them on what you keep finding.

    It works.

    Jerry Peck
    Construction/Litigation/Code Consultant - Retired
    www.AskCodeMan.com

  10. #75
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    Default Re: Thermal expansion tank and pressure

    Rick, if you re-read my original post, I did not dispute the relevancy of the tank (nor have I since) just the plumber's 'suspicious' method, in my mind, in obtaining a result to justify the installation.


  11. #76
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    Default Re: Thermal expansion tank and pressure

    Quote Originally Posted by Ian Page View Post
    No...quite the opposite. You, and others have brought to my attention a piece of equipment I was not altogether familiar with. In reading the comments, looking on line and other research I feel I am better equipped to evaluate the need and provide appropriate advise to clients.
    Thanks
    I feel better

    ' correct a wise man and you gain a friend... correct a fool and he'll bloody your nose'.

  12. #77
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    Default Re: Thermal expansion tank and pressure

    Quote Originally Posted by Jerry Peck View Post
    The codes require the installation to meet code AND manufacturer's installation instructions - and the most restrictive of each takes precedence over the less restrictive.
    Quote Originally Posted by Jim Abram View Post
    Jerry - Where is this in the IRC ?
    Jim,

    Using the thinking that you may remember things better if you have to expend effort in finding the information:
    - for the "most restrictive" shall apply part, go here: R102.1 General.
    - for the "code AND manufacturer's installation instructions" part, go here: P2801.2 Installation AND M2001.1 Installation AND G2408.1 (305.1) General.

    Let me know if you need help reading and understanding what those sections are stating - either I or another of the participants here will TRY to explain to you what you are not getting as long as you TRY to understand what is being explained ... otherwise ... don't bother asking the questions if you are not actually looking for the answers.

    Jerry Peck
    Construction/Litigation/Code Consultant - Retired
    www.AskCodeMan.com

  13. #78
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    Default Re: Thermal expansion tank and pressure

    Quote Originally Posted by Jim Abram View Post
    Jerry - The references you posted are not applicable.

    First - Looking at the term " most restrictive " which is not defined in the Code the common definition of restrictive is to limit or to prohibit.
    Requiring additional equipment to be installed by a manufacturer is clearly not limiting or prohibiting.

    Second - Does the Code provide for a manufacturer to require additional equipment be installed in a building? I cannot find that requirement in the Code.
    Jim,

    You confirmed what I suspected ... that you do not, and are not interested in, wanting to understand codes (which has been obvious from your past code references and what you try to apply them to).

    Last chance: Post those code sections here ... word for word (i.e.., that means copy and paste them here) ... and then tell me (tell us all) which word(s) you do not understand.

    I, with the help of others here, will try to explain (using terms my second grade granddaughter would understand) what the code is saying. If you are still incapable of grasping what the codes are saying, then ... Rick was spot on with this: (and you are the third type, which I have made bold for highlighting purposes)

    Quote Originally Posted by Rick Cantrell
    I think there are 3 types of questioners
    The first type are people that do not know and are looking for an answer. Not fully understanding, they often have follow up questions. This type of questioner is the basis of education and understanding, therefore discussion is welcome.

    Then there is the type of questioner that think they know, but unknown to them, they are misinformed or do not fully understand. To overcome there misconception, there will be much discussion and debate before they have a better understanding. This is still productive discussion.

    Then there is the type that just refuses to accept. This type often has follow up questions that are irrelevant, repetitious, or just out of order. Questions are answered, evidence submitted, but still they refuse to accept.
    At first, the questions appear to be genuine, so an answer is given. Many times the same question (or statement) is made, and answered several times. Much time is wasted responding to; false, misleading, and irrelevant statements.
    This hardly ever results in a constructive discussion.




    Jerry Peck
    Construction/Litigation/Code Consultant - Retired
    www.AskCodeMan.com

  14. #79
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    Default Re: Thermal expansion tank and pressure

    This is from a States manual....

    DSCN3055.JPG

    Scott Patterson, ACI
    Spring Hill, TN
    www.traceinspections.com

  15. #80
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    Default Re: Thermal expansion tank and pressure

    Quote Originally Posted by Scott Patterson View Post
    This is from a States manual....
    When you post the instructions of every WH manufacturer, and the codes of every state and muni, maybe then we can start to have a discussion.

    Face it Scott (& Jerry), this has gone in so many circles it feels like I'm on a ride at 6 Flags
    But if you think, "Just one more post" will be the post to end all doubt, then continue on.

    Read my post below about 3 types of questioners

    ' correct a wise man and you gain a friend... correct a fool and he'll bloody your nose'.

  16. #81
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    Default Re: Thermal expansion tank and pressure

    Quote Originally Posted by Jim Abram View Post
    The easy answer to this Issue is to install a HBRV . For $10 any potential expansion issues,( If any exist),are solved.
    I do not know what an HBRV is, but yes, there are other options available. The expansion is just one option.

    ' correct a wise man and you gain a friend... correct a fool and he'll bloody your nose'.

  17. #82
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    Default Re: Thermal expansion tank and pressure

    Quote Originally Posted by Jim Abram View Post
    Hose Bibb Relief Valve - Zurn and a couple of other Companies make them.
    We had one building where the water pressure would build up and installed them for relief .
    Let me get this straight - thermal expansion is not a problem ... but ... if it is ... then .... ????

    From a link to the Zurn HBRV (which is just an adapter to replace a hose bibb with a pressure relief valve (or, with another adapter, attach to a hose bibb and end up with hose bibb threads for a hose):

    Product Details - Zurn

    http://content.zurn.com/web_document...ts/TP-HBRV.pdf

    Detector Assemblies: RPDA vs. DCDA - YouTube

    'Nuff said for the person posting the HBRV yet who insists that thermal expansion is not required, even when shown his own states code requiring thermal expansion control on 'closed' systems.

    Jim, looking forward to the end of the month, huh?

    Jerry Peck
    Construction/Litigation/Code Consultant - Retired
    www.AskCodeMan.com

  18. #83
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    Default Re: Thermal expansion tank and pressure

    Quote Originally Posted by Jim Abram View Post
    JERRY !!! -As usual you shoot before you aim .I did not say anything thermal expansion. The water pressure increase was due to using the water main to pump water to the water tower.
    JIM !!! The ... LINK ... TO ... THE ... HBPR ... YOU ... REFERENCED ... DID address thermal expansion - are you admitting that you do not even review the information that you reference?

    Holy Cow!

    [quote]Again, if you read MA CMR carefully you will find that the installation of expansion tanks is optional.[/qjuote]

    Again, if you read MA CMR carefully you will find that the installation of expansion tanks is optional UNLESS ... yes, UNLESS ... go back and read that again.

    As provided by Rick: (red and larger text size is mine for highlighting)
    248 CMR 10.00: Uniform State Plumbing Code - (continued)
    Where water meters or metering devices with check valves are installed, which can create a potential hazard or nuisance due to thermal expansion, a thermal expansion tank shall be installed as close as possible to the water meter or metering devices.

    I had hoped that I could educate you somewhat but, I am getting discouraged as every day you are getting worse.
    You must first and foremost learn to read what is written and educate yourself before attempting to educate others. Your posts, including the one I am replying to, indicate that you have not yet learned to comprehend what you read.

    BTW - I am still waiting on the answer on how to reverse the feed to the water heater to correct problems in a house.
    As has been proven time and time again, and as you are proving yet again - you have no intention of trying to learn anything ... you refuse to even learn to comprehend what "SHALL BE INSTALLED" means. And the MA code above even states "where" it shall be installed ... but I'm guessing that you do not even grasp the "where" it shall be installed as you do not seem to be able to grasp "shall be installed".

    - - - Updated - - -

    Quote Originally Posted by Jim Abram View Post
    JERRY !!! -As usual you shoot before you aim .I did not say anything thermal expansion. The water pressure increase was due to using the water main to pump water to the water tower.
    JIM !!! The ... LINK ... TO ... THE ... HBPR ... YOU ... REFERENCED ... DID address thermal expansion - are you admitting that you do not even review the information that you reference?

    Holy Cow!

    [quote]Again, if you read MA CMR carefully you will find that the installation of expansion tanks is optional.[/qjuote]

    Again, if you read MA CMR carefully you will find that the installation of expansion tanks is optional UNLESS ... yes, UNLESS ... go back and read that again.

    As provided by Rick: (red and larger text size is mine for highlighting)
    248 CMR 10.00: Uniform State Plumbing Code - (continued)
    Where water meters or metering devices with check valves are installed, which can create a potential hazard or nuisance due to thermal expansion, a thermal expansion tank shall be installed as close as possible to the water meter or metering devices.

    I had hoped that I could educate you somewhat but, I am getting discouraged as every day you are getting worse.
    You must first and foremost learn to read what is written and educate yourself before attempting to educate others. Your posts, including the one I am replying to, indicate that you have not yet learned to comprehend what you read.

    BTW - I am still waiting on the answer on how to reverse the feed to the water heater to correct problems in a house.
    As has been proven time and time again, and as you are proving yet again - you have no intention of trying to learn anything ... you refuse to even learn to comprehend what "SHALL BE INSTALLED" means. And the MA code above even states "where" it shall be installed ... but I'm guessing that you do not even grasp the "where" it shall be installed as you do not seem to be able to grasp "shall be installed".

    Jerry Peck
    Construction/Litigation/Code Consultant - Retired
    www.AskCodeMan.com

  19. #84
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    Default Re: Thermal expansion tank and pressure

    Quote Originally Posted by Jim Abram View Post
    JERRY - Until you can admit that you have a problem ,I nor anyone else cannot help you.
    My apologies to all for continuing this one more post, but ...

    The above quoted post of Jim's shows the problem.

    Jerry Peck
    Construction/Litigation/Code Consultant - Retired
    www.AskCodeMan.com

  20. #85
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    Default Re: Thermal expansion tank and pressure

    For the benefit of all ... mum's the word.

    (I thunk de Nile were a river in Egypt ... )

    Jerry Peck
    Construction/Litigation/Code Consultant - Retired
    www.AskCodeMan.com

  21. #86
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    Default Re: Thermal expansion tank and pressure

    Quote Originally Posted by Jim Abram View Post


    Ormond Beach Counseling Center

    200 E Granada Blvd
    Suite 206
    Ormond Beach, Florida32176
    (386) 530-6338
    That's a rather long drive for you to make, Jim, but in an effort to try to always be of help, you can stay at our house while you are undergoing your counseling ...

    Jerry Peck
    Construction/Litigation/Code Consultant - Retired
    www.AskCodeMan.com

  22. #87
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    Default Re: Thermal expansion tank and pressure

    Quote Originally Posted by Jim Abram View Post
    Jerry - The references you posted are not applicable.

    First - Looking at the term " most restrictive " which is not defined in the Code the common definition of restrictive is to limit or to prohibit.
    Requiring additional equipment to be installed by a manufacturer is clearly not limiting or prohibiting.

    Second - Does the Code provide for a manufacturer to require additional equipment be installed in a building? I cannot find that requirement in the Code.

    See the reference below regarding manufacturer's requirements being part of the code.

    IRC Codes - www.WaterHeaterExplosions.com - Another great official website from Michael Leavitt & Co Inspections, Inc.

    Also, IRC 2012, Section R102. In part says: "Where, in any specific case different sections of this code specify different materials, methods of construction or other requirements, the most restrictive shall govern."


  23. #88
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    Default Re: Thermal expansion tank and pressure

    Unfortunately, some selectively choose to ignore code he does not like:
    - R102.7 Existing structures. - - The legal occupancy of any structure existing on the date of adoption of this code shall be permitted to continue without change, except as is specifically covered in this code, the International Property Maintenance Code or the International Fire Code, or as is deemed necessary by the building official for the general safety and welfare of the occupants and the public.
    - - R102.7.1 Additions, alterations or repairs.
    - - - Additions, alterations or repairs to any structure shall conform to the requirements for a new structure without requiring the existing structure to comply with all of the requirements of this code, unless otherwise stated. Additions, alterations or repairs shall not cause an existing structure to become unsafe or adversely affect the performance of the building.

    The first part ONLY applies to buildings and components which are:
    - not replaced
    - permitted and inspected
    - unchanged
    - has not been altered
    - etc.

    Once a building has had ANY unpermitted work - of any kind and to any extent - the building no longer has legal occupancy and that section no longer applies. That section does not apply to any of the conditions addressed in the second part as permits are required for that work.

    How many buildings have permits pulled for EVERYTHING for which permits are required (as required by the code)? Probably none.

    Jerry Peck
    Construction/Litigation/Code Consultant - Retired
    www.AskCodeMan.com

  24. #89
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    Default Re: Thermal expansion tank and pressure

    So, Rick, Scott, all others, how are you doing?

    (Trying to find a way to end this thread and ignore the endless dribble from JA.)

    Signing off on this thread, hopefully the JA will recognize the benefit to the community in doing so too.

    Jerry Peck
    Construction/Litigation/Code Consultant - Retired
    www.AskCodeMan.com

  25. #90
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    Default Re: Thermal expansion tank and pressure

    (bold is mine)
    Quote Originally Posted by Jerry Peck View Post
    Unfortunately, some selectively choose to ignore code he does not like:
    - R102.7 Existing structures. - - The legal occupancy of any structure existing on the date of adoption of this code shall be permitted to continue without change, except as is specifically covered in this code, the International Property Maintenance Code or the International Fire Code, or as is deemed necessary by the building official for the general safety and welfare of the occupants and the public.
    - - R102.7.1 Additions, alterations or repairs.
    - - - Additions, alterations or repairs to any structure shall conform to the requirements for a new structure without requiring the existing structure to comply with all of the requirements of this code, unless otherwise stated. Additions, alterations or repairs shall not cause an existing structure to become unsafe or adversely affect the performance of the building.

    The first part ONLY applies to buildings and components which are:
    - not replaced
    - permitted and inspected
    - unchanged
    - has not been altered
    - etc.

    Once a building has had ANY unpermitted work - of any kind and to any extent - the building no longer has legal occupancy and that section no longer applies. That section does not apply to any of the conditions addressed in the second part as permits are required for that work.

    How many buildings have permits pulled for EVERYTHING for which permits are required (as required by the code)? Probably none.
    Follow the requirements of the code and the other parts of the structure is permitted to remain "without requiring the existing structure to comply with all of the requirements of this code" - don't follow the code and the building loses that option as it no longer has "legal occupancy".

    Sounds like someone (possibly others too according to JA) needs to read the code and what is requires permits (everything not exempt) and what is exempt from permits (almost nothing).

    Maybe JA would care to post the IRC exemptions from permits ... after reading them, of course?

    Jerry Peck
    Construction/Litigation/Code Consultant - Retired
    www.AskCodeMan.com

  26. #91
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    Default Re: Thermal expansion tank and pressure

    Quote Originally Posted by Jim Abram View Post
    There are those on this site that think you know what you are talking about and might believe what you write .
    Jim,

    I doubt there are many here who think you know what you are talking about, I know you have at least a few believers but I trust that the majority here are able to see through your smoke screen.

    I have respect for the majority here and am convinced that their knowledge far greater than your smoke and mirrors act. Not unlike watching a magician go through his act and, while knowing it is all fake, one still watches to decipher the act.

    Having said the above, there is no need to continue to correct your incorrect information because I've already acknowledged that I know that virtually all the others have the knowledge to see through your information and act.

    Sometimes I am slow to recognize a "known known" as being such - my apologies to the others for my being slow to recognize that.

    Jerry Peck
    Construction/Litigation/Code Consultant - Retired
    www.AskCodeMan.com

  27. #92
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    Default Re: Thermal expansion tank and pressure

    Quote Originally Posted by Jim Abram View Post
    Mark - Thanks for exploding water heaters.
    I do not know of any explosions due to thermal expansion.

    This section of the Code comes into play with this type of issue.

    R102.7 Existing structures.

    The legal occupancy of any structure existing on the date of adoption of this code shall be permitted to continue without change, except as is specifically covered in this code, the International Property Maintenance Code or the International Fire Code, or as is deemed necessary by the building official for the general safety and welfare of the occupants and the public.
    Just because you do not know of any exploding water heaters due to thermal expansion does not mean that it does not happen. If you do a Google search you will see that it does happen.

    Quoting a reference to existing structures is not relevant. If the code or manufacturer requires an expansion tank than one should be installed when a water heater is installed. Does it have to be installed if the water heater is already present? No, not if it was not required when the water heater was installed. Yes, if it was required and was done.

    The point of this thread was not about quoting code. It is about why expansion tanks are often needed or required. You do not seem to want to learn anything. You seem to only want to argue about issues. I'm not sure why myself or others waste our time trying to get through to you. It is apparently not possible.


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