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I bought a wifi thermostat and tried to use G instead of C since that's what the manufacture suggested if no C. Was able to on the thermostat end but how do I add it on cooling/heating system end. Picture attached. Any help appreciated. I could not find the circuit.

Pic of my boiler

enter image description here

I bought a wifi thermostat and tried to use G instead of C since that's what the manufacture suggested if no C. Was able to on the thermostat end but how do I add it on cooling/heating system end. Picture attached. Any help appreciated.

I bought a wifi thermostat and tried to use G instead of C since that's what the manufacture suggested if no C. Was able to on the thermostat end but how do I add it on cooling/heating system end. Picture attached. Any help appreciated. I could not find the circuit.

Pic of my boiler

enter image description here

2 deleted 129 characters in body
source | link

I bought a wifi thermostat and tried to use G instead of C since that's what the manufacture suggested if no C. Was able to on the thermostat end but how do I add it on cooling/heating system end. Picture attached. Any help apprecaitedappreciated. enter image description here

enter image description here

[![enter image description here][3]][3]

I bought a wifi thermostat and tried to use G instead of C since that's what the manufacture suggested if no C. Was able to on the thermostat end but how do I add it on cooling/heating system end. Picture attached. Any help apprecaited. enter image description here

enter image description here

[![enter image description here][3]][3]

I bought a wifi thermostat and tried to use G instead of C since that's what the manufacture suggested if no C. Was able to on the thermostat end but how do I add it on cooling/heating system end. Picture attached. Any help appreciated.

1
source | link

Adding C Wire to thermostat

I bought a wifi thermostat and tried to use G instead of C since that's what the manufacture suggested if no C. Was able to on the thermostat end but how do I add it on cooling/heating system end. Picture attached. Any help apprecaited. enter image description here

enter image description here

[![enter image description here][3]][3]