Weil Mclain Transformer Relay Wiring Diagram

Old tstat had w from transformer wired to w and y from transformer wired to r rc per this schematic. Its hard to tell about your c y issue without a wiring diagram. Trying to wire up a wifi tstat with a c wire.

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Weil Mclain Boiler Schematic Diagram In 2020 Diagram Home Electrical Wiring Heating Systems

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