![]() This is where the classic numbers representing 12, 000 Btu/ton come into play such as 24 (representing 24,000 Btu or a nominal 2 ton cooling capacity) 30 (2.5 ton), 36 (3 ton), 42 (3.5 ton), 48 (4 ton) and 60 (5 ton). Since the example above is a gas furnace, the cooling capacity matching the outdoor unit is referred to in the model number. ![]() These are identified by numbers or letters depending on each manufacture’s nomenclature patterns. Seismic standards are also stated in some equipment nomenclature. Good ‘ol California leads the nation in regulations including Nitrogen Oxide requirements. The example above includes 070 to represent a 68,000 Btuh. input to the nearest 5,000 and then dropping the last three zeroes. Most often the input (not output) of a gas furnace is imbedded in the model number by rounding off the Btuh. Manufacturers also refer to multi-position equipment that may require field modifications. Equipment is made to be installed in an upflow, downflow, or horizontal position. Several methods are used to identify equipment configuration. Once installed into a building, the effects of the distribution system bears on the equipment. When testing, remember this is only a laboratory rating and rarely equals actual installed equipment performance. Two numbers in gas-fired equipment typically identifies its AFUE rating. One digit or number buried within the nomenclature can be trickier to spot than a sequence of numbers or letters. In this example, the equipment stages are typically identified by a number or symbol in the model number. Once you master the nomenclature of your favorite manufacturer, it becomes easy to find and learn others. With less than an hour’s study on your manufacturer’s website, you will begin to identify the characters used to classify the equipment types your company offers. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |