Burner control
Two-stage burner control is: ‘…a type of control that offers two distinct boiler firing rates.’
Multi-stage burner control is: ‘…a type of control that offers more than two distinct firing rates, but without continuous adjustment between firing rates.’
Modulating burner control is: ‘…a type of control that provides a continuously variable firing rate, which is altered to match the boiler load over the whole turndown ratio.’
Ref Non-domestic Building Services Compliance Guide For Scotland, 2015 Edition v1.1, published by the Scottish Government, Building Standards Division in April 2018.
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