16 AGZ 025D through 190D OMM 1087
Digital Outputs
Description Output Off Output On
DO1 Compressor #2 Compressor Off Compressor On
DO2 Compressor #4 Compressor Off Compressor On
DO3 Compressor #6 Compressor Off Compressor On
DO5 Circuit 2 Hot Gas Bypass SV Solenoid Closed Solenoid Open
DO6 Circuit 2 Liquid Line SV Solenoid Closed Solenoid Open
EXV Module 1 and 2
These modules will be used only when the expansion valve type is electronic.
Digital Outputs
Description Output Off Output On
DO1 Circuit 1 Fan Output 5 Fan(s) Off Fan(s) On
Stepper Motor Output
Description
M1+, M1- EXV Stepper Coil 1
M2+, M2- EXV Stepper Coil 2
Sensor Information
Temperature
All temperature sensors will be McQuay part number 1934146.
Pressure
Pressure inputs will be read using 0 to 5 volt ratiometric sensors. Nominal voltage range will be 0.5 to
4.5 volts.
Pressure on the low side will be measured using McQuay part number 331764501.
Pressure on the high side will be measured using McQuay part number 331764601.
Actuator Information
The electronic expansion valves used are McQuay part number 33038620X. These valves are
Sporlan supplied and all use the same bipolar stepper motor.
Setpoints
Setpoints are stored in permanent memory.
SetPoint Tables
Setpoints are initially set to the values in the Default column, and can be adjusted to any value in the
Range column.
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