1. How much suction should I expect from the draft inducer to the pressure switch?
>What are your pressure switch spec's?
Should it be really strong like it's sucking air strong or should it be slight?
>You may be able to feel 0.5 PSI (14" of water column?). You can test this - fill a soda straw with water, block the top opening and see if you feel the pull of this many inches of water.
2. How do I verify if I have a clogged vent??
>Pressurize it, measure static pressure with a homemade manometer and compare the inches of WC with what is normal back pressure for a vent.
Last edited by Wuzzat?; 11-03-2012 at 01:12 PM.