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Dual-Compressor Module Installation
Figure 8 Optional Customer-Installed High Temperature Fan Control System
Power Supply
24VDC
PLC
Or
Temperature
Control
SZO44
Compressor
Module
0-10VDC Fan Speed Signal
0.9V = Off; 1.3V = 50%; 10V = 100%
Temperature Sensor
• Compressor requirements: 1.2 to 2 GPM (4.5-755 LPM) ow rate
• Operating temperature range, standard: 190° to 210°F (88°- 99°C)
• Thermal oil bypass valve, standard setting: 200°F (93°C)
• Thermal bypass valve operation (valve’s purpose is to provide discharge temperature control)
• Oil ow on valve is A to B when the unit is cold and A to C when the heat rises (see Figure 9).
Figure 9 Oil Cooling and Thermal Valve
A B
C
Oil Cooler
Return
to Compressor
1st-Stage Separator