Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.

Backdraft preventer.

JackW Member Posts: 197
I'm in the process of installing the input and exhaust on my micro boiler for the radiant heat in my Morton building, do I need to install a backdraft preventer on the exhaust side? There isn't any mention of it in the installation directions that I can see. I'm use Schedule 40 ASTM D1785 PVC for both.


  • Zman
    Zman Member Posts: 7,330
    Do not install a damper on the exhaust. Just pipe it like the manual and you are good to go. In addition the the other post. Pitch the pipe carefully and be sure the primer and cement is for PVC exclusively. I keep seeing universal cements in the big box stores. Use only PVC cement and primer
    "If you can't explain it simply, you don't understand it well enough"
    Albert Einstein
  • JackW
    JackW Member Posts: 197
    Thank you Zman, appreciate your help.