52 Appendixes
6. Loosen the four screws indicated in the figure.
7. Remove the PCB assembly.
8. With the internal components exposed, locate the gas inlet
pipe and the gas valve in the middle of the unit, as shown in
Figure 2-1 and Figure 2-2.
Gas Valve
Gas Inlet
Pipe
Figure 2-1. NCB-24/28/34LSWE Internal Components
Gas Valve
Gas Inlet
Pipe
Figure 2-2. NCB-40LSWE Internal Components