What Is W1 And W2 On Thermostat

Thermostat wiring jumper w1 to w2 W1, w2 & e Help with my thermostat wiring? (jumped w/e and w2) : r/nest

W1, W2 & E | HVAC School

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I have a shaw 3210 thermostat with r, c,, w2, e/w1, y1 & g terminals

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W2 thermostat jumped wiringI have a shaw 3210 thermostat with r, c,, w2, e/w1, y1 & g terminals .