I have a Bryant furnace approx 25 yrs old. Model # begins 510... can't read rest. My pilot light is out I believe. Fan still runs, air is blowing just cooler. Not sure where the pilot is. Question is I always knew of 1 pilot to light on other furnaces I have had but this has 3 pilot like areas. Reminds me of a condensed grill. Can It have 3 pilots? thanks