Installation & Commissioning Manual:
Neos 100S, 20X, 30S, 35X, 40X, 50X
62-11165 Rev D
®
28
Evaporator TXV Setting
The Thermo Expansion Valve (TXV) is
designed to precisely meter the flow of
liquid refrigerant into the evaporator
and control the refrigerant gas leaving
the evaporator.
The evaporator outlet pressure (P2)
must be converted to saturation
temperature (T3) using a P/T chart.
The superheat is the difference
between the temperature at the bulb
location (T1) and the evaporator outlet
saturation temperature (T3).
T1
P2
Connect a gauge to the evaporator
outlet fitting. Put a thermocouple at
the expansion valve bulb location and
insulate it. Run the unit in Cool mode.
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