How to Perform Nitrogen Pressure Testing on Refrigerant Piping | ASHRAE 15 & ASME B31.5

This video explains the proper nitrogen pressure testing protocol for refrigerant piping systems in accordance with ASHRAE Standard 15 and ASME B31.5 – Refrigeration Piping and Heat Transfer Components. You will learn the correct procedure, safety precautions, pressure limits, and testing sequence required before evacuation and refrigerant charging. This method is essential for ensuring leak-free, code-compliant HVAC and refrigeration installations. 🔧 Topics Covered in This Video: • Purpose of nitrogen pressure testing • Why nitrogen is used instead of air or oxygen • Maximum allowable test pressure per ASHRAE 15 • ASME B31.5 requirements for refrigerant piping • Step-by-step nitrogen pressure test procedure • Holding time and pressure drop checks • Common mistakes during pressure testing • Safety precautions and best practices This guide is useful for HVAC technicians, refrigeration engineers, commissioning teams, QA/QC inspectors, and MEP professionals working on VRF, split AC, chiller, and refrigeration systems. ⚠️ Important: Always follow manufacturer guidelines and local authority requirements in addition to ASHRAE and ASME standards. ________________________________________ nitrogen pressure test refrigerant piping ASHRAE 15 pressure testing ASME B31.5 refrigeration piping HVAC nitrogen pressure test refrigerant piping leak test HVAC commissioning procedure refrigeration pressure testing MEP HVAC testing standards What is the nitrogen pressure test procedure? How to check nitrogen pressure? What is a pressure test for refrigerant piping? What is the PSI for nitrogen pressure test? How to perform nitrogen pressure testing on refrigerant piping qui Nitrogen leak test procedure PDF AC nitrogen pressure test Kit AC Nitrogen pressure test cost How long to nitrogen test HVAC Nitrogen pressure testing Refrigeration systems How to pressure test mini split without nitrogen How to pressure test refrigerant Lines How to test for leaks in AC system? What is the 3 minute rule for AC? How can you tell if your air conditioner is leaking? How do you perform a leakage test? Air conditioner leak testing cost AC nitrogen pressure test Kit How to leak test AC system with Nitrogen Pressure test air conditioning system car How to know if freon is leaking in car Car a c leak test kit AC Nitrogen pressure test cost How to pressure test air conditioning SUBSCRIBE ╔═╦╗╔╦╗╔═╦═╦╦╦╦╗╔═╗ ║╚╣║║║╚╣╚╣╔╣╔╣║╚╣═╣ ╠╗║╚╝║║╠╗║╚╣║║║║║═╣ ╚═╩══╩═╩═╩═╩╝╚╩═╩═╝ @s4shamsiTech Don't forget to like, comment, and subscribe for more tech-related content! If you have any questions or topics you'd like us to cover, leave them in the comments below. #NitrogenPressureTesting #RefrigerantPiping #ASHRAE15 #ASMEB315 #HVACTesting #HVACCommissioning #RefrigerationEngineering