Thermostatic Expansion Valves - Trane IntelliPak Installation, Operation And Maintenance Manual

Figure 117. 115 ton high operating pressure curve (all compressors and condenser fans "On")
COOLING CYCLE PRESSURE CURVE
COOLING CYCLE PRESSURE CURVE
550
550
500
500
450
450
400
400
350
350
300
300
250
90 100 110
250
90 100 110
Figure 118. 130 ton high operating pressure curve (all compressors and condenser fans "On")
COOLING CYCLE PRESSURE CURVE COOLING CYCLE PRESSURE CURVE
COOLING CYCLE PRESSURE CURVE
550 550
550
500 500
500
450 450
450
400
400 400
350
350 350
300
300 300
250
90 100 110
250 250
90 90 100 100 110 110

Thermostatic Expansion Valves

The reliability and performance of the refrigeration system
is heavily dependent upon proper expansion valve
adjustment.Therefore, the importance of maintaining the
proper superheat cannot be over emphasized. Expansion
valves are preset at the factory. In typical applications, field
adjustment should not be required unless the valves are
replaced or damaged.
RT-SVX36K-EN
115 Ton Standard Capacity
105 Ton High Capacity
120 130 140
Suction Pressure, PSIG
120 130 140
Suction Pressure, PSIG
115 Ton Standard Capacity 130 Ton Standard Capacity
105 Ton High Capacity
120 130 140
Suction Pressure, PSIG
120 120 130 130 140 140
Suction Pressure, PSIG Suction Pressure, PSIG
105 °F Ambient
95 °F Ambient
85 °F Ambient
75 °F Ambient
65 °F Ambient
150 160 170 180
150 160 170 180
105 °F Ambient
105 °F Ambient
105 °F Ambient
95 °F Ambient
95 °F Ambient
95 °F Ambient
85 °F Ambient
85 °F Ambient
85 °F Ambient
75 °F Ambient
75 °F Ambient
75 °F Ambient
65 °F Ambient
65 °F Ambient
65 °F Ambient
150 160 170 180
150 150 160 160 170 170 180 180
On air-cooled units, the expansion valves shipped
installed were factory set to control between 14-18°F at the
ARI full load rating conditions (approximately 45°/125°F
saturated suction/discharge).
On evaporative condenser units, the expansion valves
shipped installed were factory set to control between 18-
22°F at the ARI full load rating conditions (approximately
45°/105°F saturated suction/discharge). At part load,
expect lower superheat. Systems operating with lower
Unit Start Up
147