Lennox ZCC092 - Thermostat Wiring and Operation; Thermostat Wiring Diagram and Key; Thermostat Power and Operation

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ELECTRONIC OR ELECTROMECHANICAL THERMOSTAT
POWER:
1- Terminal strip TB1 energizes thermostat components with 24VAC.
OPERATION:
2- TB1 receives data from the electronic thermostat A2 (Y1, Y2, Y3, W1, W2, G, OCP). The 24VAC signal from TB1
energizes the appropriate components for heat or cool demand.