{"product_id":"ventilation-open-flued-boilers-tomkat-digital-workbook","title":"Ventilation: Open-Flued Boilers | TomKat Digital Workbook","description":"\u003cp\u003e\u003cstrong\u003eFollow the air supply to an open-flued boiler.\u003c\/strong\u003e This focused TomKat workbook shows how the calculation changes when the same boiler is in a room, in a compartment supplied directly from outside, or in a compartment supplied from a room.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e£3.99 digital PDF download. No printed booklet or postage.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNo LCL manual purchase required.\u003c\/strong\u003e The explanations, figures and practice examples you need to work through this booklet are included.\u003c\/p\u003e\u003ch3\u003eWhat it covers\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDomestic natural-gas open-flued boiler examples.\u003c\/li\u003e\n\u003cli\u003eHeat input, output, net and gross ratings.\u003c\/li\u003e\n\u003cli\u003eRoom ventilation and high- and low-level compartment vents.\u003c\/li\u003e\n\u003cli\u003eWorked drawings of vents in series and the 50% increase for the internal wall vents in those examples.\u003c\/li\u003e\n\u003cli\u003eChoosing a vent by its stated equivalent free area.\u003c\/li\u003e\n\u003cli\u003eA practice exercise with separate answers, plus a QR link to the TomKat ventilation calculator.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThis is a focused learning workbook, not a complete ventilation lesson, installation procedure or assessment of competence. It does not cover every appliance or installation. Follow current standards, the appliance manufacturer’s instructions and the requirements for the job.\u003c\/p\u003e\u003ch3\u003eDownload and use\u003c\/h3\u003e\u003cp\u003e16 A4 pages, including two notes pages and the resource-use notice. Five fillable answer boxes: save your own copy and use a PDF reader that supports forms, or print and write by hand. The boxes do not calculate or check answers. Your download link is provided after payment.\u003c\/p\u003e\u003ch3\u003eCorrections and future editions\u003c\/h3\u003e\u003cp\u003eIf we identify an error in a digital booklet you purchased, we’ll provide a corrected digital copy at no extra charge. Your purchase does not include every future edition: expanded editions containing additional teaching material may be sold separately. Purchasing an expanded edition is optional. This does not affect your statutory rights.\u003c\/p\u003e\u003ch3\u003eIndividual licence\u003c\/h3\u003e\u003cp\u003eThis purchase is for one person, for their own learning and reference. You may save the PDF on your own devices and print copies for your own use. Except where permitted by law, sharing with learners, uploading to a training platform, or displaying or reproducing this workbook for classroom teaching requires a separate TomKat licence. No resale or redistribution.\u003c\/p\u003e\u003cp\u003eFor team or classroom use, contact \u003ca href=\"mailto:info@tom-kat.co.uk\"\u003einfo@tom-kat.co.uk\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003eVersion 1.0, 6 November 2026. Original TomKat explanations, illustrations and design. Based on the applicable rules in BS 5440-2:2023; no LCL reference tables are reproduced. © 2026 TomKat Gas Training Ltd. Third-party rights remain with their owners.\u003c\/p\u003e","brand":"TomKat Engineer Shop","offers":[{"title":"Default Title","offer_id":66408780464477,"sku":"TK-VENT-OF-DIGITAL","price":3.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1106\/1828\/0285\/files\/tomkat-ventilation-workbook-matching-thumbnail.png?v=1793973595","url":"https:\/\/shop.tom-kat.co.uk\/products\/ventilation-open-flued-boilers-tomkat-digital-workbook","provider":"TomKat Engineer Shop","version":"1.0","type":"link"}