3-4 Checking the CO2
① The combustion may be checked after running the boiler for several minutes.
To do this it is necessary to set the boiler to Calibration Mode.
② Ensure that all external controls are calling for heating with maximum output.
③ The appliance should be check visually for obvious defects.
④ There are two test points in the flue, one for flue gas and the other for air.
⑤ Open the air and flue gas test points.
⑥ Insert the flue gas analyzer probe as far as the retainer.
⑦ Allow the boiler to reach thermal equilibrium (around 5~10min)
⑧ The CO and CO2 values should be check each below 200ppm and 5%.
3-3 Water Circuit Diagram
Air inlet test
point
Flue gas test
point
Exhaust flue
Flue gas
1
8
7
9
10
3
6
2
4
5
13
11
12
14
15
1. Heat Exchanger
2. High Limit Switch
3. Burner
4. Flame Detector (Photo Sensor)
5. Fan
6. Igniter
7. Water Inlet Temperature Probe
8. Water Outlet temperature Probe
9. Gas Valve
10. Water Flow Sensor
11. Water Supply Reducing Valve
12. Cold Water Inlet Connection
13. Hot Water Outlet Connection
14. Gas Inlet Connection
15. Safety Relief Valve
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