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NFPA 85 Interpretation

NFPA 85 Interpretation

NFPA 85 Interpretation

(OP)
Is it any requirement in the NFPA 85 that define the minimun open percentage of the fuel oil valve for a boiler under normal operation?

RE: NFPA 85 Interpretation

Welcome to Eng-Tips! This would be better asked over in forum184: NFPA (fire) Code Issues where all the folks who deal with NFPA on a daily basis hang out. If you do decide to post over there, please ask the system administrators to delete this post by clicking the link in the bottom center of your thread that reads "Inappropriate thread? If so Red Flag i!" and letting them know that you've reposted over in the NFPA forum.

RE: NFPA 85 Interpretation

Since burner manufacturers have fuel oil burners with turndown ratios of about 10 to 1 as opposed to older designs with turndown ratio of 4 to 1, contact these manufacturers.

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