Description
•Automatically shuts off
burner in a low water
condition to prevent boiler
damage.
•Low maintenance. No moving
parts to wear stick or hang
up, as in float devices.
•Test button (550 & 650
Series) allows the burner
circuit and control to be
tested without lowering the
water level.
•Manual reset feature (550 &
750 Series) will not lock out
in power failures.