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TT-110 run time

Just want to check the running of my new TT-110. Tonight it is 28* outside. The boiler fired and ran for about 45 minutes, at what sounded like high fire, ending with Supply of 146* Return of 126*. It then shifted to read 6-132 Supply and 6-128* Return, and sounded as if it were shutting off. But it then started up again but at a much lower firing rate, reading 3-136*Supply and Return 120* and ran for another 20 minutes at this reduced firing rate. So for a total time, the boiler ran for 1 hour. generally it will not fire up again for apx 3 hours. How does this sound?


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