Low Water Cut Off Switch Boiler

Mcdonnell miller low water cut offs are specially designed to protect steam and hot water boilers from the hazards of a low water condition.

Low water cut off switch boiler.

Our low water cut offsread more. In operation they will interrupt the electrical current to the firing device if the water in the system drops below the boiler manufacturer s minimum safe water level. Install the float type low water cutoff if provided in conjunction with the gauge glass as shown in figure 6 3. This shuts down the heat input.

Install the optional probe type low water cut off into the 3 4 tapping on the right side of the boiler. Low water cut off level control. A check valve shall be installed in a city water feed line for steam boilers. Mcdonnell miller low water cut offs are specially designed to protect steam and hot water boilers from the hazards of a low water condition.

The needed repairs can range from re tubing to total destruction of the unit if it is overheated. Nys rule 4 13 4 d 4 14 4 b and 4 5 9. For cast iron boilers the feed water shall not be introduced through openings or connections used for relief water column or water level gage glass. The taco low water cutoff provides accurate and dependable protection for all types of boilers from small residential hot water boilers to large industrial steam units.

If a boiler is dry fired burned without water in it it can suffer rupture or catastrophic failure. A low water cutoff is a mechanical device usually a float switch that is used to turn off the burner or shut off fuel to a boiler to prevent it from running once the water drops below a certain point. A low water cutoff is a maintenance must. Safgard 550 commercial hot water boiler low water cut off 120 vac standard el1214 3 4 npt probe by hydrolevel hydrolevel 1100 safgard low water cut off for gas hot water boilers 24v 3 7 out of 5 stars 5.

Refer to figure 6 2 for tapping location. This probe style low water cutoff features patented dualvision technology external led s and simplified wiring for easy installation and testing and automatic manual reset mode and are available in 24vac or 120vac models.