
6
−
38
T
−
318
80
100
120
140
160
180
200
220
240
260
280
300
320
60
70
80
90
100
110
120
psig
(43.3)
(37.8)
(32.2)
(26.7)
(21.1)
(15.6)
(
°
C)
(Bar)
(5.5)
(6.9)
(8.3)
(9.7)
(11.0)
(12.4)
(13.8)
(15.2)
(16.6)
(19.3)
(20.7)
(22.0)
35
°
F (1.7
°
C)
Box
(17.9)
Note: Curves to be used as troubleshooting guide only for model series 69NT40 with
fresh air makeup vent closed, unit powered on 460VAC/60Hz and SMV 100% open.
Compressor Discharge Pressure Versus Ambient Air Temperature at Stable Box Temperature
80
100
120
140
160
180
200
220
240
260
280
300
320
60
70
80
90
100
110
120
Ambient Air Temperature
psig
(48.9)
(43.3)
(37.8)
(32.2)
(26.7)
(21.1)
(15.6)
(Bar)
0
°
F (-17.8
°
C)
Box
(5.5)
(6.9)
(8.3)
(9.7)
(11.0)
(12.4)
(13.8)
(15.2)
(16.6)
(19.3)
(20.7)
(22.0)
(17.9)
Ambient Air Temperature
(
°
F)
(
°
C)
(
°
F)
(48.9)
Figure 6-37 R-134a Compressor Pressure and Motor Current Curves Versus Ambient Temperature
(Sheet 1 of 2)
Содержание 69NT40-541-300
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Страница 131: ...7 3 T 318 Based on Drawing 62 66058 Figure 7 2 SCHEMATIC DIAGRAM Units with 3 Phase Evaporator Motors...
Страница 133: ...7 5 T 318 6 Heater FCCH FCCH Figure 7 4 SCHEMATIC DIAGRAM Units with Normal Evaporator Fan Capability...
Страница 134: ...7 6 T 318 FCCH FCCH Figure 7 5 SCHEMATIC DIAGRAM Units with Single Evaporator Fan Capability...
Страница 136: ...7 8 T 318 To ST10 To TRX2 To QC1 To QC1 To QC1 To MC6 CONTROLLER Figure 7 7 SCHEMATIC DIAGRAM Emergency Bypass...
Страница 138: ...7 10 T 318 Based on Drawing 62 66058 Figure 7 9 UNIT WIRING DIAGRAM Units with 3 Phase Evaporator Motors Sheet 1 of 2...
Страница 139: ...7 11 T 318 Based on Drawing 62 66058 Figure 7 10 UNIT WIRING DIAGRAM Units with 3 Phase Evaporator Motors Sheet 2 of 2...
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