A series of measurements and observations have already conducted regarding the temperature distribution and the safety of exhaust fan attached at the top of Vesa-2. Vesa-2 is an equipment created to prevent the exposure of gaseous emissions from the charcoal fire to the people who roast kemplang manually and traditionally in Palembang, South Sumatra Indonesia. The attachement of exhaust fan at the top of Vesa-2 has corrected regarding fluctuating heat resulting from the live charcoal at the bottom. Some reasons has outlined including the uncontrolled volume of charcoal burnt, the amount of air flown, the quality of charcoal and the uniformity of burning. Measurements show the better results and safety for the fan positioned at the bottom. The exit gas temperature and velocity0.92 m/sec; 45 0C much lower than the application of exhaust fan positioned at the top which 80.15 0C and 3.64 m/sec
