Can I install the thermostat if the current thermostat only uses R and W but the furnace panel has terminals for CYGRW? It’s a simple forced hot air furnace not AC. Thank you

Thermostat R and W only but furnace has CYGRW

Brandbird December 30, 2020, 12:10am 12

And here’s the original thermostat:

Curret Thermostat only has 2 wires

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