Low Water Cut Off With Manual Reset
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. The boiler’s minimum safe operating water level is specified by each manufacturer.
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An lwco may shut off the boiler if the water level drops too low, but once the level returns to a safe minimum, automatic reset allows the boiler to start back up again.
Low water cut off with manual reset. • to prevent electrical shock, turn off the electrical power before making electrical connections. 1″ (25mm) npt equalizing pipes required; Refer to figure 6.2 for tapping location.
If the low water condition is sustained for 30 seconds, the low water light will blink, indicating that the. A probe is installed in the boiler shell or external manifold and is connected to the control unit. Test button (oem 550 & 650) allows the burner circuit and control to be tested without lowering the water level.
1 single pole, double throw switch for low water; These controls are used as the secondary lwco on steam boilers and can also be used as the primary lwco on hot water heating boilers. 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 the low water condition is sustained for 30 seconds, the low water light will. Should the water level dip below that specified level. Water is used as a conductor to complete the circuit between the probe and the boiler shell.
A low water cutoff is a device that detects when the fluid level in hot water and steam boilers drops below the minimum safe operating level specified by the boiler manufacturer. Low water cut off with manual reset for hot water boilers for over 85 years, mcdonnell & miller has been a name you can trust and rely on for boiler safety controls. Normal operation low water condition in a low water situation, if the burner continues to fire, damage can occur to the boiler and create a potential disaster.
A taco low water cutoff turns off the burner and signals that a low water situation has occurred. 2 single pole, double throw switches; My lwco is indicating low water when i have plenty of water.
Install the float type low water cutoff (if provided) in conjunction with the gauge glass as shown in figure 6.3. If the low water condition is sustained for 30 seconds, the low water light. 2 single pole, single throw switches;
Features and benefits include lockout delay 5 switch used on 93, 193, 94 and 194 series. 5.0 out of 5 stars 1.
The taco lwco provides reliable protection for all types of boilers, from small residential hot water boilers to large industrial steam boilers. No moving parts to wear stick or hang up, as in float devices. At normal operating level boiler feed pump off.
Water level dropped to electric feed valve or alarm operating level. When water is in contact with the probe, the circuit is.
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