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Anyone having any issues with the Viessmann CU3A holding its schedule on the A circuit? The boiler simply isn't moving heat when the program is clearly looking for warmer temps. The local rep says there will be a swing (it won't follow the schedule exactly due to its inherent swing I guess). We have a Vitotrol 200A set up for constant circ. I did many WB2Bs like this and never got a call. Thanks for any comments.
Wilson Services, Inc