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Recent content by Mechy82

  1. M

    Common Venting CAT II: Flue Sizing

    Problem: What size vent is needed to vent 3 boilers? Information: (3) lochinvar Knight XL boilers 650,000 Btu. All 3 units are inline and going to a common vent. Natural draft application Rise of each unit is roughly 6' and 20' lateral with 1 elbow 2 tees. Installation Manual calls out...

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