The manual says Furnace Rated at .5" ESP.
There are some things I don't understand though. In the chart are TAP, LOW, MEDL, MEDH and HIGH. Are these for cariable speed blowers? Having a single speed blower, which do I refer to?
Also, I'm in the natural gas business and have a draft range differential pressure transmitter than can accurately measure down to a few fractions of an inch. Basically a digital manometer rated at .1% of 30" (0.03" I think).
Do I tap into the inlet and outlet of the furnace or what?