350
250
300
200
90
100
250
Service and Maintenance
200
Figure 78. Pressure curve — 40 tons standard efficiency
90
100
500
450
500
400
450
350
400
300
350
250
300
200
250
90
100
200
90
100
Note: Full load acceptable subcooling range: 13-23°F
50T Standard Efficiency - circuit 1
Figure 79. Pressure curve — 40 tons high efficiency
500
450
500
400
450
350
400
300
350
250
300
200
250
90
100
200
90
100
Note: Full load acceptable subcooling range: 13-23°F
50T Standard Efficiency - circuit 2
500
138
450
500
400
110
120
130
140
Suction Pressure, PSIG
110
120
130
140
Suction Pressure, PSIG
40T Standard Efficiency
30T High Efficiency
110
120
130
140
Suction Pressure, PSIG
110
120
130
140
Suction Pressure, PSIG
40T High Efficiency
110
120
130
140
Suction Pressure, PSIG
110
120
130
140
Suction Pressure, PSIG
55T Standard Efficiency
75
o
F Ambient
65
o
F Ambient
150
160
170
180
150
160
170
180
105
o
F Ambient
105
o
F Ambient
95
o
F Ambient
85
o
F Ambient
95
o
F Ambient
75
F Ambient
o
85
o
F Ambient
65
o
F Ambient
75
o
F Ambient
65
o
F Ambient
150
160
170
180
150
160
170
180
105
o
F Ambient
95
o
F Ambient
105
F Ambient
o
85
o
F Ambient
95
o
F Ambient
75
F Ambient
o
85
o
F Ambient
65
o
F Ambient
75
o
F Ambient
65
o
F Ambient
150
160
170
180
150
160
170
180
105
F Ambient
o
95
o
F Ambient
250
200
90
100
110
30T
500
450
500
400
450
350
400
300
350
250
300
200
250
90
100
110
200
90
100
110
50T St
40T eFle
500
450
500
400
450
350
400
300
350
250
300
200
250
90
100
110
200
90
100
110
500
RT-SVX080A-EN
450
500
400
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