In many natural gas boilers, the energy lost up the chimney can be significant. Adding an automatic vent damper to the exhaust vent can turn out to be an efficient and very cost-effective measure.<\/p>\n
The aim in using such a device is to be able to limit surplus air. Too much excess air will lead to:<\/p>\n
Watch out! While the advantages of such a practice seem attractive, limiting the combustion air in a boiler can nevertheless be risky. The incomplete combustion of natural gas, along with allowing an unused capacity of fuel to escape, will lead to:<\/p>\n
These two phenomena interact. In the short term, the boiler will no longer be able to meet heating needs, it will not last as long, and it will have a tendency to overheat. The integrity of the appliance will deteriorate; eventually, it will cease to function or will be a fire risk, even cause gas poisoning.<\/p>\n
So, given these basic principles, the importance of not impairing the safe venting of combustion products is obvious. In fact, modifying any appliance could turn out to be dangerous! It is important that any modification be carried out by competent workers using certified materials and be done according to design principles recognized as safe.<\/p>\n
Clause 8.26 of the Natural Gas and Propane Installation Code (B149.1) authorizes the use of an automatic vent damper under certain conditions. In many cases, this authorization goes against certifying that a boiler conforms to the Code for the Field Approval of Fuel-Related Components on Appliances and Equipment (B.149.3).<\/p>\n
Given the risks inherent in an obsolete practice and the importance of efficiently managing energy, the Régie du bâtiment du Québec<\/em> (RBQ) has clarified this practice.<\/p>\n The RBQ agrees with the installation of automatic vent dampers, without requiring a complete, new approval of the appliance according to Code B149.3 in force, if all the following conditions are respected:<\/p>\n Other considerations and obligations:<\/p>\n We recommend that you read with the complete text and follow the recommendations of INFO-RBQ dated March 2010 covering modulating dampers to control the venting of combustion products.<\/p>\n <\/span>https:\/\/www.rbq.gouv.qc.ca\/dirPublication\/dirEntreprises\/dirGaz\/2222-57-installation-registres-conduit-fumee-automatiques.pdf<\/a> Charles Côté, Eng. In many natural gas boilers, the energy lost up the chimney can be significant. Adding an automatic vent damper to the exhaust vent can turn out to be an efficient and very cost-effective measure. The aim in using such a … Lire la suite<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[405,198],"tags":[594],"yoast_head":"\n\n\n\n\n\n\n\n\n\n\n\n\n\t\n\n
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\n(Note: In French only.)<\/em><\/span><\/p>\n
\nDATECH Group<\/p>\n","protected":false},"excerpt":{"rendered":"