5-01-24 Updated version. Engineer reviewed. Small batch had printer errors that have been replaced.
Determine proper superheat and subcooling temperatures.
Easy to use slide chart.
Pocket size.
This is a very useful tool that takes the guess work out of charging cooling systems. One side of this tool is a slide chart used for calculating superheat for a NON-TXV system and the other side is a slide chart used to calculate subcooling on a TXV system. The photo shows both sides of the tool. This tool is made of thick durable water resistant paper stock with corner rivets. It fits easily in your shirt pocket at approximately 6.25 inches high by 3.25 inches wide.