Lockout switch for flame safeguard Control Reset control system. When
pressed, resets electrical circuit to allow ignition.
Indicates low water condition or ignition failure.
Indicates cumulative time burner has been in operation to allow maintenance
at prescribed time intervals.
Allows operator to bleed air from the water heater.
Allows operator to drain excess fuel from combustion chamber.
Drain Valve (M-85 only) Allows operator to drain water from water vessel.
Initiates safety shutdown when flame inside burner goes out.
Ignites fuel and controls flame.