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General Information
Table A: Basic Data
Table B: Manifold Data
Model
No.
Quantity of Vent Size (in.)
Burners Gas Valves Blowers Flue Intake
122 3 2* 1 4 5
162 4 2* 1 5 5
202 5 2* 1 5 5
242 6 2* 1 5 5
322 8 2* 1 6 5
Model
No.
Burners per Valve Stages % Fire at Stage
A B 1 2 1 2
122 2 1 A AB 66 100
162 3 1 A AB 75 100
202 3 2 A AB 60 100
242 4 2 A AB 66 100
322 5 3 A AB 63 100
7
*Second valve located inside air plenum
Fig. 4: Gas Valve Detail
Fig. 5: Air Shutter Adjustment