Annual Maintenance Requirements - Williams 2903512 Installation Instructions And Owner's Manual

1. Clean fan blades.
2. Clean air blower.
3. Check and clean silicone red pipes.
4. Check air flow switch.
5. Clean and check exhaust flue pipe and air intake pipe.
6. Check for gas leaks on all connections.
7. Check and adjust gas pressure.
Gas inlet pressure
(pipeline)
Gas burner pressure
adjustment

Annual Maintenance Requirements

Gas manifold
pressure (burner)
16
Check red O-Ring Gasket
(NRNG003). If it is
damaged, replace it.