Replies

1. 
   FastEddie | Nov 09, 2009 02:50am | #1

   Can you use pvc for the boiler vent?

   "Put your creed in your deed."   Emerson

   "When asked if you can do something, tell'em "Why certainly I can", then get busy and find a way to do it."  T. Roosevelt

1. 
   drozer | Nov 09, 2009 02:59am | #2

   yeah, regular pvc for the combustion air and ppvc for the exhaust.in my jurisdiction.

1. 
   richardi | Nov 09, 2009 03:10pm | #3

   Yes, PVC will be used for the 'snorkel'. 

   How far from grade will the upper elbow be?

2. 
   rdesigns | Nov 09, 2009 05:51pm | #4

   Could you explain what the concern is with the lattice? Is it a vertical piece against the house to grow vines on? Is it a screen around a deck? Do you want to attach the pipe to the lattice or run up behind it?

    

1. 
   richardi | Nov 09, 2009 06:38pm | #5

   I want to know if the existing lattice needs to be moved before the PVC 'snorkel' is installed.  My feeling is the the plumbers will just put the PVC where they need to without any regards to what may be in their way or aesthetics.  I'm just trying to stay ahead of them.  After all, this is just my garden...

   So, the question remains how far above grade?

    

1. 
   rdesigns | Nov 10, 2009 05:00am | #7

   As DanH recommends, check the installation instructions. In general, most manufacturers want the termination to be at least 12" above grade, and there are horizontal clearances from inside corners, windows, overhangs, and ventilation air intakes, whether powered or not.

   There should be a diagram of vent clearances in the installation instructions that will make it easy to see what's needed.

3. 
   DanH | Nov 10, 2009 01:15am | #6

   Read the installation instructions for the boiler. They will be fairly explicit about distance from various obstructions.

   A strong nation, like a strong person, can afford to be gentle, firm, thoughtful, and restrained. It can afford to extend a helping hand to others. It's a weak nation, like a weak person, that must behave with bluster and boasting and rashness and other signs of insecurity. --Jimmy Carter
4. 
   Jeff_Clarke | Nov 10, 2009 06:54am | #8

   Typically:

   a. Vent must terminate:

   • At least 6 feet from adjacent walls.

   • No closer than 5 feet below roof overhang.

   • At least 7 feet above any public walkway.

   • At least 3 feet above any forced air intake within 10 feet.

   • No closer than 12 inches below or horizontally from any

   door or window or any other gravity air inlet.

   b. Air inlet must terminate at least 12” above grade or snow line

   c. Do not terminate closer than 4 feet horizontally (above or below)

   from any electric meter, gas meter, regulator, relief valve

   or other equipment.

1. 
   richardi | Nov 10, 2009 07:06am | #9

   Great!  I know what grade is but what is snowline?  I'll bet it's different in different parts of the country...