System information

8
© 2015 Emerson Climate Technologies, Inc.
AE4-1287 R8
Injection lines represent maximum operation point within discharge temperature limits of the compressor. For operating points
below the line, Demand Cooling would not be active. For instance at -25°F evaporating temperature and 80°F condensing and
65°F return gas there would not be injection. However at the same evaporating temperature and return gas temperature with
120°F condensing temperature there would be injection.
If Demand Cooling is not applied, CoreSense discharge temperature protection is required in addition to a head fan. Refer
to Figure 5 for CoreSense temperature probe installation location. For more information on CoreSense, See AE8-1367. If
Demand Cooling is applied, head fan and CoreSense are not needed.
Without Demand Cooling
- Head fan required
- CoreSense discharge temp protection required
With Demand Cooling
- Head fan optional
Figure 2 – Low Temp Envelope without
Demand Cooling
Figure 3 – Low Temp Envelope with
Demand Cooling
Figure 4 – CoreSense Discharge Temperature Protection
(See AE8-1367 for additional instructions)