42
Figure 10.2: Gas Valve Detail
10.3.
Table 10.3: Typical CO2/O2 Combustion Readings Range
Model Fuel %CO2 %O2
CHG150 Natural Gas 8.2 6.3
CHG225 Natural Gas 8.7 5.4
CHG150 Propane NA NA
CHG225 Propane 10.2 5.4
WARNING
EACH CHG SERIES BOILER IS TESTED AT THE FACTORY AND ADJUSTMENTS
ADJUSTMENTS. IMPROPER GAS VALVE OR MIXTURE ADJUSTMENTS COULD