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help with Dan's Formula

jpf321
jpf321 Member Posts: 1,568
I'm looking at the formula on page 158 of TLAOSH .. can someone tell me where he gets the numbers in Step 2  ... 19.27 and 966 .. 966 sounds like latent BTUs of steam .. 19.27 escapes me .. thanks.
1-pipe Homeowner - Queens, NYC

NEW: SlantFin Intrepid TR-30 + Tankless + Riello 40-F5 @ 0.85gph | OLD: Fitzgibbons 402 boiler + Beckett "SR" Oil Gun @ 1.75gph

installed: 0-20oz/si gauge | vaporstat | hour-meter | gortons on all rads | 1pc G#2 + 1pc G#1 on each of 2 mains

Connected EDR load: 371 sf venting load: 2.95cfm vent capacity: 4.62cfm
my NEW system pics | my OLD system pics

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