Specifications

Installation & Maintenance Manual__________
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8.8 Calibrating the Burner at Maximum Capacity
Set the output of the burner to its highest potential by modifying the fan speed to maximum as described in the
previous section and perform an analysis of the combustion gases:
1. For burners using natural gas: CO
2
= 9.0 - 9.4%
2. For burners using propane: CO
2
= 10.8 - 11.2%
3. If the measured values are different than above, the following steps should be taken to adjust:
4. Open the door to the burner compartment;
5. Turn the adjustment screw 'B' (see Fig 8.9.1) clockwise to decrease and counter-clockwise to
increase the value, being careful to turn slowly until the correct CO
2
level is obtained.
6. Proceed to checking the value at minimum output levels.
8.9 Calibrating the Burner at Minimum Capacity
Set the output of the burner to its lowest potential by modifying the fan speed to minimum as described in the
previous section and perform an analysis of the combustion gases.
1. for burners using natural gas: CO
2
= 8.2 - 8.5%;
2. for burners using propane: CO
2
= 9.4 – 9.8%;
3. If the measured value is different than the range above, the following steps should be taken to adjust:
4. open the door to the burner compartment;
5. remove the outer safety plug (Torx® T40) and turn the adjustment screw 'A' (see Fig 8.9.1) clockwise
to increase and counter-clockwise to decrease the value, being careful to turn slowly until the correct
CO
2
level is obtained
6. replace the safety plug
7. Recheck the maximum and minimum adjustment and repeat calibration until they both are within
acceptable limits without adjustment.
Figure 8.9.1