Calculating Antifreeze Requirements

Welcome to Geothermal University online training by Enertech Global. Antifreeze levels are crucial for reliable operation of geothermal systems in cold climates. This video shows how to calculate antifreeze in gallons for closed loop geothermal systems. Be sure to download the attached worksheet (Excel file) to help with your calculations. Thanks for watching!

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Nitrogen Purge while Brazing

Welcome to Geothermal University online training by Enertech Global. One of the most overlooked steps is the use of a nitrogen purge while brazing. This video discusses the importance of that step. Thanks for watching!

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Leak Testing an Air Coil

Welcome to Geothermal University online training. It is important to have a systematic approach to leak checking air coils. This video discusses types of leaks and a process for leak checking. Thanks for watching!

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Testing a Water/Refrigerant Coax

Welcome to Geothermal University online training. While it does not happen often, sometimes coaxes fail. In today’s video we’re going to discuss testing a geothermal water / refrigerant coax for a leak. Every precaution should be taken to properly diagnose a suspected failed coax. In this video, we’ll provide testing procedures and recommendations to help you diagnose a leak. When we investigate a failed coax there are three reasons for failure. The first – which is very rare – is a manufacturing defect. The second reason for failure is repeated, excessive freezing which can lead to a rupture. The third and most common, is due to water quality or corrosion. Thanks for watching!

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Flushing, Purging and Filtering the Loop

Welcome to Geothermal University online video training. One of the most critical installation procedure is flushing, purging, filtering the loop before startup. The top cause of pump failure is water quality, air and debris. This video will discuss the importance of water evaluation, filtering, removing debris and adding antifreeze. Be sure to download the IOM to review while watching the video.  Thanks for watching!

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