What is the maximum test pressure in psi when leak testing a low pressure centrifugal chiller with nitrogen?

The correct maximum test pressure for leak testing low pressure centrifugal chillers using nitrogen is indeed 10 psi. This value is significant because it reflects industry standards and safety regulations designed to ensure that systems operate safely and effectively without exceeding pressures that could cause damage or compromise the integrity of the equipment.

Testing at this pressure allows operators to identify leaks or weaknesses in the system while ensuring that the stresses placed on the components do not exceed their design limits. Using a pressure that is too high could potentially lead to unsafe conditions, such as ruptures or failures in the system, which can lead to hazardous situations and increased repair costs.

When conducting tests, it is essential to adhere to manufacturer specifications and relevant codes that outline testing procedures, including the maximum allowable pressures for verifying the integrity of low pressure systems. This careful approach helps maintain the reliability and safety of HVAC systems.