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New LWCO seems to be missing something.
I have finished my first steam boiler install and I'm starting it up. The LWCO, McDonnell Miller 67, is calling the auto fill valve. Im watching the water level rise up and over the top of the watch glass. This is when I shut it down. The LWCO has no terminal 3 available, its blanked. After checking my wiring, I look into the switch and see the roller that should actuate the switch not able to reach the rocker. On an old, decommissioned switch I see where the roller would ride in the notch, but this new switch seems not to have a lower surface to make the switch. Its a brand new device. I think this is assembled with non integrated parts.
The instruction manual was quite thin. Can anyone offer advice to me?