![]() It is also recommended for use on gas atmospheric appliances where a draft hood cannot be installed, and can improve combustion stability and draft on many gas atmospheric installations with venting problems. Type MG\nA double-acting control for gas-fired furnaces and boilers is widely used for conversion burner installations, gas draft-induced appliance operation with mechanical draft inducers, or sidewall power venters.Draft controls are generally used when oil-fired units are converted to gas.\n\n Usage is generally limited to furnaces or boilers designed for use with power burners and incinerators. #6 draft control freeBut, unlike a single-acting control, it is also free to open outwardly to spill the products of combustion, in case of blocked flues or down-drafts.\nNational codes often mandate the use of a draft control. Like a single-acting control, it opens inwardly to maintain a uniform draft. Gas-Fired Appliances\nGas-fired furnaces and boilers generally require a double-acting draft control.To detect flue gas spillage on dual fuel installation, a Field Thermal Safety Switch is recommended.\n\n The double- acting feature is important for gas-firing appliances because it allows spillage of combustion products in case of blocked flues or down-drafts. We suggest using a double-acting control on units where fuels are frequently changed. Dual Fuel Appliances\nBurners capable of burning either gaseous fuels or oil should be equipped with a barometric draft control.A barometric draft control will help eliminate this undesirable stack action and permit the unit to be pressurized.\n\n Forced Draft Burner\nForced Draft installed with a stack height in excess of 30' will probably develop excessive natural draft, reducing the amount of pressure within the furnace or boiler.While a draft hood (diverter) is often used on gas units fired with an atmospheric burner, a double-acting barometric draft control should be used for furnaces or boilers fired with power burners.\n\n A single acting draft control for oil maintains that negative pressure.\nA power burner designed to burn natural or LP gas operates in the same manner. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |