Heated makeup SMC air unit comprising a heating chamber with a modulated furnace one or more non-modulated furnaces air temperature control and efficient furnace operation over a wide heating rate range.
The utilization of indirect fired furnaces in the heated makeup SMC air unit is disclosed. A control system is included to provide control of heated air temperature to within +?1 F.掳 using continuous control of the heating rate of the modulated furnace and stepwise activation and de-activation of the non-modulated furnaces in response to heating demand. A programmed combustion air flow controller programmed to provide optimal airflow for any gas flow in a flow range of a modulating gas valve is provided to assure combustion efficiencies of at least 83%.
Buildings or rooms comprising commercial kitchens Washington Redskins Hoodie , research laboratories, and industrial installations often include one or more exhaust fans that vent smoke, steam Customized Redskins Jersey , and other air-polluting substances from areas where cooking units, chemical process, or manufacturing operations are located. To replace the exhausted air Cheap Redskins Jerseys , heated makeup air devices are used to heat and introduce outside air into the building or room. These heated makeup air devices basically consist of a duct structure open to both the outside atmosphere and the building or room, a fan for blowing air through the duct structure into the building or room, heating units to heat the outside air as needed Josh Doctson Redskins Jersey , and a control system for activating and monitoring the heater makeup air device as needed.
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