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Sterling outdoor duct furnaces utilize a weatherproof enclosure to be used with standard air handling systems (or in a Sterling packaged unit). Inputs range from 100 to 1,200 MBH and are ETL approved for 20° to 90°F temperature rise. Available as either natural (RT) or power vented (PV) and for use with natural or LP gas.
Sterling models RT and PV indirect fired make-up air systems are available in multiple configurations and vary depending on the specific application. Standard and High CFM blower cabinets are designed to be mounted on a common heavy-duty skid rail with up to three outdoor gas-fired duct furnaces. Other cabinets include filter/damper cabinets, downturn plenums, coil cabinets with factory installed coils and evaporative coolers. Multiple factory installed gas and air controls are available including modulating gas control, electronic stage controllers, building pressurization controllers, and a variety of mixed air controllers. Duct furnaces are ETL approved.
Sterling model AH air handlers are divided into two classifications: “Standard” and “High CFM.” Standard air handlers have a CFM range of 1,500 to 8,000 CFM and are available factory assembled with evaporative coolers and downturn plenums. High CFM air handlers have a CFM range of 3,000 to 15,000 CFM and are available factory assembled with coil cabinets (up to 30+ tons) and downturn plenums. Both units can be used for indoor or outdoor applications.
Sterling EV evaporative coolers are available in four sizes ranging from 800 to 8,500 CFM. Units utilize 8" CELdek® media as standard (with optional 12" CELdek® and 8" or 12" GLASdek® available). All feature a full size stainless steel sump, heavy duty pump with low water cutoff, 1" media standard and a low water cutoff control. Sterling evaporative coolers are available as stand-alone units or factory assembled arrangements including a Sterling air handler.