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  • Re: Electric tankless waterheaters

    Originally posted by ToUtahNow View Post
    In sizing?

    Mark
    Sizing? Who needs SIZING? We've got PEX all over the place without the required cross-sectional area in fittings and valves. Rinnai's with internal tubing around 5/8". Type M grade looking copper too. On and on...

    (Missed the post/question Mark. Haven't ran into too many code to manufacture conflicts in relation to sizing as I recall.)

    J.C.

    Comment


    • Re: Electric tankless waterheaters

      NFPA 54-09 12.6..2.1

      A chimney for residential-type or low-heat applications shall extent atleast 3' above the highest point where it passes through a roof of a building and atleast 2' foot higher than any portion of A building within a horizontal distance of 10'.

      That is the quote of the code. How exactly do you choose to get finiky with that?

      Comment


      • Re: Electric tankless waterheaters

        We have a nasty little Hitler from the fire marshal's office here that would probably make you run the vent stack above the roof line of the main house if the shed was too close.
        sigpic

        Comment


        • Re: Electric tankless waterheaters

          Originally posted by Kevin Jones View Post
          NFPA 54-09 12.6..2.1

          A chimney for residential-type or low-heat applications shall extent atleast 3' above the highest point where it passes through a roof of a building and atleast 2' foot higher than any portion of A building within a horizontal distance of 10'.

          That is the quote of the code. How exactly do you choose to get finiky with that?
          I don't. As I am not the inspector. This is one that I don't see enforced in many situations here or in other states that I've been to though. (You know how you look at plumbing in other places or even where you live. It's a sickness man. ).

          J.C.

          Comment


          • Re: Electric tankless waterheaters

            Originally posted by JCsPlumbing View Post
            I don't. As I am not the inspector. This is one that I don't see enforced in many situations here or in other states that I've been to though. (You know how you look at plumbing in other places or even where you live. It's a sickness man. ).

            J.C.
            I agree that it does go overlooked. Homeowners and contractors all get away with it until the little Hitler comes along. lol maybe I should change my name on here. Either way it is the code and it's intent. Placing an exhausting vent at say a 6'-8' level leaves room for exhaust fumes to remigrate back into a home through a window, doorway, or other mechanical means.

            Comment


            • Re: Electric tankless waterheaters

              Originally posted by Kevin Jones View Post
              I agree that it does go overlooked. Homeowners and contractors all get away with it until the little Hitler comes along. lol maybe I should change my name on here. Either way it is the code and it's intent. Placing an exhausting vent at say a 6'-8' level leaves room for exhaust fumes to remigrate back into a home through a window, doorway, or other mechanical means.
              Do it!

              J.C.

              Comment


              • Re: Electric tankless waterheaters

                Originally posted by JCsPlumbing View Post
                Do it!

                J.C.
                It is fitting

                I may have to confer with Mark. I am already on the cut list by now. lmao
                Last edited by Kevin Jones; 07-06-2010, 11:45 PM.

                Comment


                • Re: Electric tankless waterheaters

                  ok Mark. I see you are on...can I change my name?

                  I am jewish by birthright...I won't be offended.

                  Comment


                  • Re: Electric tankless waterheaters

                    Originally posted by Kevin Jones View Post
                    ok Mark. I see you are on...can I change my name?

                    I am jewish by birthright...I won't be offended.
                    No.

                    Mark
                    "Somewhere a Village is Missing Twelve Idiots!" - Casey Anthony

                    I never lost a cent on the jobs I didn't get!

                    Comment


                    • Re: Electric tankless waterheaters

                      Combustion vent termination has gone back and forth within the UPC. The current reading is the same as NFPA 54:12.6.2.1

                      The required 5'-minimum is NAPA 54:12.6.2.3

                      Mark
                      "Somewhere a Village is Missing Twelve Idiots!" - Casey Anthony

                      I never lost a cent on the jobs I didn't get!

                      Comment


                      • Re: Electric tankless waterheaters

                        Originally posted by ToUtahNow View Post
                        No.

                        Mark
                        Patton has spoken. Sit down!

                        J.C.

                        Comment


                        • Re: Electric tankless waterheaters

                          Originally posted by JCsPlumbing View Post
                          Sizing? Who needs SIZING? We've got PEX all over the place without the required cross-sectional area in fittings and valves. Rinnai's with internal tubing around 5/8". Type M grade looking copper too. On and on...

                          (Missed the post/question Mark. Haven't ran into too many code to manufacture conflicts in relation to sizing as I recall.)

                          J.C.
                          I don't really recall many conflicts with Manufacturers. One I thought was funny was the way Pentair calculated their Combustion Air. The engineer conceded their paperwork was in error yet the warranty department stuck to their guns. It ended up costing the GC two vents.

                          Mark
                          "Somewhere a Village is Missing Twelve Idiots!" - Casey Anthony

                          I never lost a cent on the jobs I didn't get!

                          Comment


                          • Re: Electric tankless waterheaters

                            Originally posted by ToUtahNow View Post
                            I don't really recall many conflicts with Manufacturers. One I thought was funny was the way Pentair calculated their Combustion Air. The engineer conceded their paperwork was in error yet the warranty department stuck to their guns. It ended up costing the GC two vents.

                            Mark
                            What product did it involve?

                            Thanks.

                            J.C.

                            Comment


                            • Re: Electric tankless waterheaters

                              Originally posted by JCsPlumbing View Post
                              What product did it involve?

                              Thanks.

                              J.C.
                              It involved a MiniMax 250,000, a MiniMax 400,000 and a Rinnai R85 all in a pool equipment room. The original design of the combustion air was a mess. I had them leave the original combustion air in and added both a new high and low combustion air.

                              The design of the new grills were garbage so it really cut the free-air down. The math was still there to make it work but it wasn't what I wanted. I tried to show Pentair their calculations were wrong but they wouldn't budge. They wanted about double the combustion air a the Mechanical Code called for.

                              Mark
                              "Somewhere a Village is Missing Twelve Idiots!" - Casey Anthony

                              I never lost a cent on the jobs I didn't get!

                              Comment


                              • Re: Electric tankless waterheaters

                                Got the van loaded to rough in the the master bath tomorrow
                                After telling them how many objections there were with the elec tank less
                                there going to give me some room in the wife's closet for the tank
                                We will see when i get up the hill

                                Comment

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