M
martineire
can anyone tell tell me i just serviced a firdbird popular 90 boiler today its about 20 years old. when i was doing my FGA all my reading were in range O2 was 5.4 CO was 5ppm CO2 was 11.5 RATIO was 0.0000 XS air was 34.6 EFF gross was 81.8 but the flue gas temp was very high 315 degrees when this should be around 210 degrees. Why is this so high when my oil pressure is at 8 bar so i cant really drop it much lower than that. Boiler stat was set at 75degrees would this have that much of a bearing on the matter.Any help what do ye think