NOTE:
Do not disconnect at the gas valve.
Remove the two gas pipe bracket securing screws from underside of inner case, see fig
8.5.
Drop down the electronics box into the service position.
Remove the four screws from the chassis front, see fig 8.2.
Remove the chassis front by pulling it out at the top from its retaining slots.
NOTE:
When replacing chassis front panel ensure the bottom fits behind lip.
Fig. 8.6 Fan, Gas valve and Burner