Secondary C Terminal on Furnace Circuit Board Love & Improve Life

Furnace Eac Terminals. Where to Connect C Wire On Furnace Guide Looking for advice on the correct way to wire the transformer to the furnace. However the EAC and HUM terminals are blank on my circuit board, no way to connect to them

This seems like it wouldn't help since it's only available during the call for heat I've opened the furnace, and nothing is labeled EAC or appears to be intended to have anything else hooked up to it beyond what is already there

Wiring How to identify the C terminal on the HVAC Love & Improve Life

Edit 2: There is also a "EAC-1" terminal that is energized "whenever the blower operates". Per the manual: The HUM terminal is a 24 VAC output, energized when the gas valve relay is operating during a call for heat It's likely a stupid question, but please bear with me

Rewire ABCD to standard terminals (R, G, Y, W, C) at the furnace. I use the HUM terminal (per manual it's 120VAC at 1A max) to power the humidifier via a 24VAC transformer Looking for advice on the correct way to wire the transformer to the furnace.

C Terminal on Furnace r/hvacadvice. I would wire the Yellow (Comm) to the 120v Hot/Line from the electric panel or furnace junction box It's likely a stupid question, but please bear with me