The first thing a geothermal maintenance technician needs to do is how to complete the heat of extraction/rejection. This test allows you to confirm that a geothermal system is performing properly. This simple process allows you to confirm that the system is operating at peak performance during a maintenance, while also preserving the life of the system by not introducing contaminants into the cooling system.

Special thanks to Water Furnace International AND THEIR STAFF for assistance with knowledge and training materials (not sponsored).

The Water Furnace 7 Series installation manual can be found at this link (see page 50 for a pressure drop chart to calculate GPM)
https://www.waterfurnace.com/literature/7series/IM2700ANB.pdf

The specifications catalogue for the Water Furnace 7 Series can be found at this link (see page 37 for the table I used to confirm performance)
https://www.waterfurnace.com/literature/7series/SC2700ANB.pdf

Testo 549i pressure gauge (paid link)
https://www.amazon.com/Testo-High-Pressure-Gauge-Generation-Degree/dp/B07V714BNN/ref=sr_1_3_mod_primary_new?crid=356KA1LQA5P3E&keywords=testo+druk&qid=1697577162&sbo=RZvfv%2F%2FHxDF%2BO50 21pAn SA%3D%3D&sprefix=testo+druk%2Caps%2C78&sr=8-3
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