Honeywell Design and Application - Check out for W7220 JADETM Economizer

Section 12 - Sensors for Economizer Modules
63-8594-02 Honeywell Economizers 166
OR one C7250A Mixed Air Temperature
sensor and two C7400S Outdoor Air and
Return Air sensors for differential enthalpy
changeover;
C7250A (MAT)
C7400S (OA)
C7400S (RA)
OR one C7250A Mixed Air Temperature,
one C7250A Temperature Only Outdoor
Air sensor, and one C7400S Return Air
sensor for differential temperature
changeover.
S-bus in this case ignores the humidity
input from the RA sensor.
C7250A (MAT)
C7250A (OAT)
C7400S (RA)
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