02-07-2022 02:44 PM
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 the G terminal on the control center (R 8285D). How do I connect my nest learning thermostat to eliminate the TEKMAR