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I am replacing a Cadet listed thermostat 5c86 model C2002 240VAC

I am replacing a Cadet listed thermostat 5c86 model C2002 240VAC and 22A res for a room in wall heater. The old thermostat has 3 wires: A blue wire LN1, a black wire LN2, and a red wire LD2. These wires were attached to the thermostat's circuit board.
What do I connect to what in new honeywell's 4 wire thermostat?
What do I connect to what in new honeywell's 2 wire thermostat?

I want to consider 2 and 4 wire options.

Thank you.



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