I am confused on this schematic drawing and understanding what it means when I see the T1 coil in parallel (I'm not even sure) with the PR1 contact?
Does that mean they are logic "OR"ed together or something else entirely?
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The PR1 contact should not truly be connected in parallel with the T1 coil:
If it were, energizing coil PR1 (e.g. by pressing the "FIRE" button) would short Line and Neutral and blow the fuse.
Most likely device TR is not a typical relay (or even a typical timer relay). It's always connected to L and N, so always energized.
Most likely the two extra terminals on TR control it's behavior. Maybe it is a reset or start input to initiate a timer interval?