Exalt
Venturi Replacement
Kit
5
Table 1: Combustion Settings
NG 110, 155 NG 199 Propane
High Fire
CO
2
Range 9.0 to 10.5% 8.5 to 10.5% 10.4 to 11.0%
O
2
Range 4.85 to 2.15 % 5.75 to 2.15 % 5.1 to 4.2 %
CO Max 150 ppm 200 ppm
Low Fire
CO
2
Range 9.0 to 10.0 % 8.5 to 10.0 % 10.4 to 11.0 %
Lower than or equal to High Fire CO
2
level
O
2
Range 4.85 to 3.0 % 5.75 to 3.0 % 5.1 to 4.2 %
Higher than or equal to High Fire CO
2
level
CO Max 10 ppm
Fig. 6: Throttle Screw Location
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