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found a solution to Nest Install on Baxi Luna 3 Comfort boilers with Baxi AVS77 thermostats. 1. If Baxi AVS77 thermostat is installed on the boiler, no problem, leave it there, also on my boiler the AVS77 was connected to the M2 (optional connection) terminals 1 & 2. 2. If Baxi AVS77 is...

Stern, with the Baxi AVS77 thermostat I have, it controls the water temp and heating, so there are dozens of settings, I believe you are correct, I need to reverse the installation, but of course, that is easier said than done. I think I will reach out to BAXI for assistance in getting my boiler...

Stem, I appreciate the assistance. Yes my boiler has the same connections. Yes it is a combi boiler, I also thought (M1) 1&2 to (Nest) 2&3 was probably correct. I do have one other question. The M2 connection on my boiler, which was an add-on accessory in order to have the Baxi thermostat...

Gentlrman, a little assistance please, Installing NEST learning thermostat on Baxi hT 330 has external wall BAXI thermostat, connected to M2 boiler connections, 1&2. Connected Nest, using lot voltage combi, heat link connected to mains, heat link 2 & 3 back to Boiler M2 connections 1&2. T1 and...