What is the main purpose of a blowoff tank in a boiler system?

The primary purpose of a blowoff tank in a boiler system is to avoid overheating the sewer system. When water that is being drained from the boiler is hot, it can cause damage to the sewer lines and surrounding infrastructure. The blowoff tank serves as a buffer that cools the hot water before it is discharged into the sewer system. By allowing the hot water to dissipate its heat in the blowoff tank, the risk of thermal shock and subsequent damage to the sewer system is significantly reduced. This is crucial for maintaining the integrity of the plumbing infrastructure and ensuring safe disposal of waste water.

In a typical boiler operation, when water is blown off to remove impurities or during maintenance, it's important that the temperature of the water is managed to protect the sewer system from heat-related issues. This reflects the overall principle of safe and environmentally responsible operation in boiler systems.