Table 4-6 (Continued)

30 Ton Operating Pressure Curve (All Compressors and Condenser Fans "On")

 

 

 

 

COOLING CYCLE PRESSURE CURVE

 

 

 

 

 

 

 

 

(Based on Indoor Airflow of 400 CFM / Ton)

 

 

 

 

 

 

 

 

FULL LOAD

 

 

 

 

 

 

380

 

 

 

 

 

 

 

 

 

 

 

360

 

 

 

 

 

 

 

105 F OD Ambient

 

 

 

 

 

 

 

 

 

 

 

PSIG

340

 

 

 

 

 

 

 

 

 

 

320

 

 

 

 

 

 

 

95 F OD Ambient

 

PRESSURE,

 

 

 

 

 

 

 

 

300

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

85 F OD Ambient

 

DISCHARGE

280

 

 

 

 

 

 

 

 

 

 

260

 

 

 

 

 

 

 

75 F OD Ambient

 

 

 

 

 

 

 

 

 

 

 

240

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

65 F OD Ambient

 

 

220

 

 

 

 

 

 

 

 

 

 

 

200

 

 

 

 

 

 

 

 

 

 

 

180

 

 

 

 

 

 

 

 

 

 

 

50

55

60

65

70

75

80

85

90

95

100

 

 

 

 

 

SUCTION PRESSURE, PSIG

 

 

 

 

To Check Operating Pressures

1.Start the unit and allow the pressures to stabilize.

2.Measure the outdoor air dry bulb temperature (F) entering the condenser coil.

3.Measure the discharge and suction pressure (psig) next to the compressor.

4.Plot the outdoor dry bulb temperature and the operating suction pressure (psig) onto the chart.

5.At the point of intersection, read to the left for the discharge pressure. The measured discharge pressure should be within ± 7 psig of the graph.

40 Ton Operating Pressure Curve (All Compressors and Condenser Fans, per ckt, "On")

 

 

 

 

COOLING CYCLE PRESSURE CURVE

 

 

 

 

 

 

 

 

(Based on Indoor Airflow of 400 CFM / Ton)

 

 

 

 

 

 

 

 

FULL LOAD

 

 

 

 

 

 

380

 

 

 

 

 

 

 

 

 

 

 

360

 

 

 

 

 

 

 

 

 

 

PSIG

340

 

 

 

 

 

 

 

105 F OD Ambient

 

 

 

 

 

 

 

 

 

 

 

320

 

 

 

 

 

 

 

 

 

 

PRESSURE,

 

 

 

 

 

 

 

 

 

 

300

 

 

 

 

 

 

 

95 F OD Ambient

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

280

 

 

 

 

 

 

 

85 F OD Ambient

 

DISCHARGE

 

 

 

 

 

 

 

 

 

260

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

240

 

 

 

 

 

 

 

75 F OD Ambient

 

 

 

 

 

 

 

 

 

 

 

 

 

220

 

 

 

 

 

 

 

65 F OD Ambient

 

 

200

 

 

 

 

 

 

 

 

 

 

 

180

 

 

 

 

 

 

 

 

 

 

 

50

55

60

65

70

75

80

85

90

95

100

 

 

 

 

 

SUCTION PRESSURE, PSIG

 

 

 

 

To Check Operating Pressures

1.Start the unit and allow the pressures to stabilize.

2.Measure the outdoor air dry bulb temperature (F) entering the condenser coil.

3.Measure the discharge and suction pressure (psig) next to the compressor.

4.Plot the outdoor dry bulb temperature and the operating suction pressure (psig) onto the chart.

5.At the point of intersection, read to the left for the discharge pressure. The measured discharge pressure should be within ± 7 psig of the graph.

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Image 88
Trane RT-SVX10C-EN specifications 340 320