Press the [▲] New key to reset the determined values. If necessary, a
test can also be started again.
The measurement result can be displayed graphically on the manifold
as well as in the app.
Press [Menu/Enter] to return to the main menu.
7.2.4 Target Superheat
This feature makes it possible to connect the testo 570s manifold to two
additional testo 605i Smart Probes in order to calculate the target superheat.
This application can only be used for split air conditioning systems/heat pumps
with a fixed expansion valve. The two connected testo 605i Smart Probes
determine the ODDB and RAWB values. The target superheat value appears
on the display as a result.
The following are used for the measurement:
• testo 115i (clamp thermometer) or
• fixed cable probes
• testo 605i
in practice.
Alternatively, the values can be configured manually.
Before each measurement, check that the refrigerant hoses are in
flawless condition.
Before each measurement, zero the pressure sensors.
The instrument is switched on and the measurement menu is
displayed.
All connections must be pressureless (ambient pressure).
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