WebGreenheck Product Application Guide 2 ® Make-Up Air Application No. MUA/100-02 High Temperature 100% Outdoor Air (Direct Gas-Fired) Operation A relatively low airflow volume is discharged at a high velocity and temperature (140° F). Supply air is 100% outdoor air. Relatively small heating units are spaced throughout the building. Benefits Web2 days ago · Direct-fired gas trains have a substantial turndown burner capability — typically, in the 20-1 to 30-1 ratio range, which allows operation with 4 or 5 percent to 100 percent of rated capacity. Most direct gas-fired AHUs have a supply-air temperature between 50°F and 100°F.
Make-up Air, April 2024 - Greenheck-USA
WebFeb 1, 2005 · With direct-fired units, too much airflow can result in combustion problems and too little airflow can produce a longer than normal flame, which can overheat the fan bearings. Direct-fired units have two basic designs. In one design, the entire airflow of the unit passes over the burner. http://store.ventilationdirect.com/direct-drive-gas-fired-heated-make-up-air-unit-2000-cfm cumberland university baseball 2021
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WebFeb 11, 2024 · Mua would fire up and do so 5 times consecutively. A intermittent fail. This continued on to this winter. First really cold snap the plant dropped to 58 degrees. Up to the roof all but two units faulted. Reset them and they all fired up and ran great multiple trials. It was a mystery what happened. Until last week. WebThe KSF series has both a belt drive (model KSFB) and direct drive (model KSFD) configuration. Both have a compact design and provide a great source of non-tempered make-up air for commercial, institutional and … WebThe Burner shall be a direct-fired two stage combustion burner constructed of cast aluminum burner sections with stainless steel burner plates and an efficiency of 92%. The Burner shall have a factory installed direct spark for gas trains up to ¾” diameter and piloted ignition assembly with a flame rod and a spark rod for gas trains 1” and greater. east texas weather forecast/longview