https://www.googlenestcommunity.com/t5/Nest-Thermostats/Wiring-nest-thermostat/m-p/101193#M22510 <P>I have a GB100W gas boiler that has a TEKMAR 256 thermostat ,a ceiling transformer is connected to # 8 and 9 terminals, # 5 terminal is connected to the R terminal on the R 8285D-1026 control center on the boiler, # 6 terminal on the TEKMAR 256 is connected to &nbsp;the G terminal on the control center (R 8285D). How do I connect my nest learning thermostat to eliminate the TEKMAR&nbsp;</P> Mon, 07 Feb 2022 22:44:32 GMT cast0804ronae 2022-02-07T22:44:32Z https://www.googlenestcommunity.com/t5/Nest-Thermostats/Wiring-nest-thermostat/m-p/101193#M22510 <P>I have a GB100W gas boiler that has a TEKMAR 256 thermostat ,a ceiling transformer is connected to # 8 and 9 terminals, # 5 terminal is connected to the R terminal on the R 8285D-1026 control center on the boiler, # 6 terminal on the TEKMAR 256 is connected to &nbsp;the G terminal on the control center (R 8285D). How do I connect my nest learning thermostat to eliminate the TEKMAR&nbsp;</P> Mon, 07 Feb 2022 22:44:32 GMT https://www.googlenestcommunity.com/t5/Nest-Thermostats/Wiring-nest-thermostat/m-p/101193#M22510 cast0804ronae 2022-02-07T22:44:32Z