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firing rate of he boiler?
Looking over old notes from a seminar and trying to answer the questions regarding boiler firing rates, I'm struggling to get things clear in my head.
When dealing with hw boilers and steam boilers, what device or devices control the firing rate? Is it the thermostat, a timer or an outdoor reset control? Is it a combination of different controls? Are there choices according to the contractor or engineer?
Trying to answer the questions of over-firing and under-firing. And its connection to the common problem of short-cycling. As I look through my old dead men's school workbook the troubleshooting answer to certain issues says: the burner isn't firing to the connected load. I think I know what that means, but how does one go about fixing that problem. Is it just a control problem if the boiler is sized correctly?