What is required for every automatic hot water heating boiler not under continuous attendance?

For an automatic hot water heating boiler that is not under continuous attendance, implementing a low water cutoff is crucial for safety and operational integrity. This device is designed to prevent the boiler from operating when water levels fall below a safe threshold, which could lead to overheating and damage to the equipment or even create hazardous situations, such as a fire or explosion.

In systems that are unattended, the risk of insufficient water levels is heightened. As operators may not be present to monitor the boiler, the low water cutoff serves as an automated safety measure to shut the boiler down in such events. This assures that even when human oversight is limited, there are fail-safes in place to protect both the equipment and surroundings.

While other components like a high-temperature shutoff switch or a temperature gauge can be important for monitoring and regulating temperature, they do not address the critical safety concern associated with low water levels in unattended systems. Similarly, an emergency power switch may be useful in certain scenarios, but it does not provide the specific protective mechanism against low water conditions that is needed in this context.