Boilers may be classified in two general groups: 1. Sectional cast iron boilers. 2. Steel firebox boilers, fire-tube or water-tube. Cast iron boilers may be rectangular (or square) with vertical sections or round with horizontal sections.
These boilers are usually shipped in sections and assembled at the place of installation. Some smaller boilers are factory-assembled. Some have water-filled spaces completely surrounding the combustion chamber.
Cast iron boilers are normally limited to 15 psig steam pressure and 30 psig water pressure (274 F) with IBR* net load ratings ranging up to approximately 2,500,000 Btu/hr output. Fire-tube steel boilers have their combustion gases passing thru tubes surrounded by circulating water. A packaged steam or hot water fir-tube boiler is a modified Scotch type boiler† having all component in an assembled unit. C
omponents include burner, boiler, controls and auxiliary equipment. Most modern firetube units operate at or below 250 psig and below about 20,000 lb steam/ hr. Fuels for packaged firedtube units may be oil, gas or a combination of these.
Water-tube steel boilers have their combustion gases circulating around the tubes and water passing thru the tubes. Most modern water-tube packaged units have capacities ranging up to 60,000 lb steam/ hr and presures up to 900 psig. Capacity is limited by shipping clearances. Water-tube units are designed principally for oil, gas or a combination of these fuels. These boilers can be adapted to solid fuels more readily than can fire-tube steel boilers.
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Los Angeles appliance repair supports various neighborhoods in the Los Angeles with proper and reliable service. As soon as all repair work is complete, residents return to their daily errands and routine and continue their lives without inconveniences caused by faulty appliances. The company provides repair service for various appliance brands, models and types, including Viking, Jenn Air, KitchenAid, Maytag, Whirlpool and many others. Don’t hesitate inquire about your appliance model type and brand to see yourself what can be done to improve the situation.