The service rep(Dave),who was out to look at the 1 year old boiler was right on top of things. He even consulted a manual to check the specs for our particular boiler. The 1 concern for the future is: this machine is 1 year old and has been serviced 2 times for failure to start up Since it was installed. That is not a good record for this expensive machine. At least the weather wasn’t bad when the guys were out. Hopefully this machine will not quit in the dead of winter. Fingers crossed.