86
50 55 60 65 70 75 80 85 90 95 100
160
180
200
220
240
260
280
300
320
340
360
COOLING PRESSURE CURVE
(Based on Indoor Airflow of 400/CFM)
FULL LOAD
65 F OD Ambient
75 F OD Ambient
85 F OD Ambient
95 F OD Ambient
105 F OD Ambient
SUCTION PRESSURE, PSIG
DISCHARGE PRESSURE, PSIG
Table 4-6
25 Ton Hi Eff Cond Operating Pressure Curve (All Compressors and Condenser Fans "On")
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 w ithin ± 7 psig of the graph.
To Next Page
Loading...
Need help?
General
