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Make-up and Exhaust for a High Efficiency Furnace

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  • Make-up and Exhaust for a High Efficiency Furnace

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Name:	1. Box brake bending Aluminum sheet.jpg
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Name:	2. Wrapped Plywood.jpg
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    Last weekend's project is to connect the make-up and exhaust PVC lines to my high efficiency furnace for my garage addition. The first step was to bend a piece of Aluminum to wrap a piece of 3/4" plywood. The wrapped plywood was installed in the Vinyl siding to give me a good mounting surface for the exhaust bezel.

    1. Box brake bending Aluminum sheet
    2. Wrapped plywood
    3. Wrapped plywood installed in siding
    Miller Thunderbolt
    Smith Oxyacetylene Torch
    Miller Dynasty 200DX
    Lincoln SP-250 MIG Welder
    Lincoln LE 31 MP
    Lincoln 210 MP
    Clausing/Coldchester 15" Lathe
    16" DuAll Saw
    15" Drill Press
    7" x 9" Swivel Head Horizontal Band Saw
    20 Ton Arbor Press
    Bridgeport

  • #2
    The next step was to fabricate a brace to support the PVC pipes. First I dipped the end of the Unistrut into a container of Hydrochloric acid (Muriatic acid from Home Depot). The acid does a nice job of removing the zinc so you don't generate fumes when you weld it. Next I welded the base to the Unistrut using a Lincoln 210 MP welder.

    4. Removing Zinc with acid
    5. Welding the base plate.
    6. Base plate welded
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    Miller Thunderbolt
    Smith Oxyacetylene Torch
    Miller Dynasty 200DX
    Lincoln SP-250 MIG Welder
    Lincoln LE 31 MP
    Lincoln 210 MP
    Clausing/Coldchester 15" Lathe
    16" DuAll Saw
    15" Drill Press
    7" x 9" Swivel Head Horizontal Band Saw
    20 Ton Arbor Press
    Bridgeport

    Comment


    • #3
      The next step was to install the PVC piping and the newly fabricated Unistrut support.



      7. Installing the PVC Pipe

      8. Installing the Unistrut Brace

      9. Close up of Unistrut Brace.

      10. Bottom of brace

      11. Top of brace

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Name:	8. Installing the Unistrut Brace.jpg
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      Miller Thunderbolt
      Smith Oxyacetylene Torch
      Miller Dynasty 200DX
      Lincoln SP-250 MIG Welder
      Lincoln LE 31 MP
      Lincoln 210 MP
      Clausing/Coldchester 15" Lathe
      16" DuAll Saw
      15" Drill Press
      7" x 9" Swivel Head Horizontal Band Saw
      20 Ton Arbor Press
      Bridgeport

      Comment


      • #4
        The last step was to install the bezel on the outside of the garage addition.



        12. Bezel installed

        13. Close up of Bezel
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        Miller Thunderbolt
        Smith Oxyacetylene Torch
        Miller Dynasty 200DX
        Lincoln SP-250 MIG Welder
        Lincoln LE 31 MP
        Lincoln 210 MP
        Clausing/Coldchester 15" Lathe
        16" DuAll Saw
        15" Drill Press
        7" x 9" Swivel Head Horizontal Band Saw
        20 Ton Arbor Press
        Bridgeport

        Comment


        • #5
          Looks good Don
          Richard

          Comment


          • #6
            Very nice. No one around here installs the high-efficiency machines, so I'm still doing everything with B venting.

            Comment


            • #7
              Originally posted by Ltbadd View Post
              Looks good Don
              Thanks

              Originally posted by MAC702 View Post
              Very nice. No one around here installs the high-efficiency machines, so I'm still doing everything with B venting.
              An 80% efficient furnace is a simpler solution for a garage because you don't have to deal with the condensate.
              Miller Thunderbolt
              Smith Oxyacetylene Torch
              Miller Dynasty 200DX
              Lincoln SP-250 MIG Welder
              Lincoln LE 31 MP
              Lincoln 210 MP
              Clausing/Coldchester 15" Lathe
              16" DuAll Saw
              15" Drill Press
              7" x 9" Swivel Head Horizontal Band Saw
              20 Ton Arbor Press
              Bridgeport

              Comment


              • #8
                Originally posted by Don52 View Post
                ...An 80% efficient furnace is a simpler solution for a garage because you don't have to deal with the condensate.
                Good point, but everything installed around here is a combination with an air conditioner, so we've got the condensate to deal with anyway.

                Comment


                • #9
                  Put a high efficiency unit when I built my own house 2 years ago. They do such a god job the exhaust gas is moist...but not really warm. Its common to see a giant glacier hanging from the side of the house.

                  Comment


                  • #10
                    I think I see two or three different guys, working on your project. Can you explain?

                    Comment


                    • #11
                      Body doubles. Will the real Don52 please stand up?

                      Comment


                      • #12
                        Nice work
                        You're hired. I have several projects waiting for you to start.

                        www.facebook.com/outbackaluminumwelding
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                        • #13
                          Originally posted by Goodhand View Post
                          I think I see two or three different guys, working on your project. Can you explain?
                          I have a bunch a practical friends, and we help each other out. We sort of trade hours. I do what I like for them, such as machining and welding.

                          -Don
                          Miller Thunderbolt
                          Smith Oxyacetylene Torch
                          Miller Dynasty 200DX
                          Lincoln SP-250 MIG Welder
                          Lincoln LE 31 MP
                          Lincoln 210 MP
                          Clausing/Coldchester 15" Lathe
                          16" DuAll Saw
                          15" Drill Press
                          7" x 9" Swivel Head Horizontal Band Saw
                          20 Ton Arbor Press
                          Bridgeport

                          Comment


                          • #14
                            Originally posted by ryanjones2150 View Post
                            Body doubles. Will the real Don52 please stand up?
                            I am the one putting primer and gluing the PVC pipe.
                            Miller Thunderbolt
                            Smith Oxyacetylene Torch
                            Miller Dynasty 200DX
                            Lincoln SP-250 MIG Welder
                            Lincoln LE 31 MP
                            Lincoln 210 MP
                            Clausing/Coldchester 15" Lathe
                            16" DuAll Saw
                            15" Drill Press
                            7" x 9" Swivel Head Horizontal Band Saw
                            20 Ton Arbor Press
                            Bridgeport

                            Comment


                            • #15
                              Ah...the pretty one...

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