IBC SL Series Installation & Operating Manual page 83

7.3 Replacing the fan, gas valve, and burner
Combustion fan
Venturi mixing device
Gas valve coupler and gasket
High fire (gas:air) adjustment
Gas valve inlet compression coupling/ nut
On-Off switch
Inlet gas pressure port
Manifold pressure port (not used)
Low fire (offset pressure)
Fan gasket
Figure 41 Gas valve and fan components - SL 26-260 G3
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