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  1. CFSE001

    NFPA 85 - Is there a Low Air Flow Trip at < 25% full-load air flow

    As late as 2001, the boiler code trip diagram clearly indicates a low air flow trip at < 25% full-load air flow in Figure 4.9.3(b) Boiler Trip Logic. However, the 2004 and current 2007 code is much less clear about this issue stating “low combustion air flow below the permitted limits shall...

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