Hussmann Ingersoll Rand User Manual page 230

Crankcase heaters should be selected based on the following table:
Compressor Model
Number
IR2C0173 – IR2C0407
IR2C0484 – IR4C1385
IR4C1480 – IR4C2397
IR4B2707 – IR4B3604
IR6B4060 – IR6B6462
* PTC heater with temperature control
PTC Heaters 60 W and 120 W
These two PTC heaters are self-regulating. The current consumption drops with increasing
crankcase temperature, thereby conserving energy. A bore at the bottom (front or side) of the
compressor housing is provided for the heater. A plastic plug protects this bore.
Electric Supply
The heater can be connected to the free connection terminals in the compressor connector box.
Connect the heater so it is on when the compressor is not running; please see the Electrical Data
– Section 5 of this manual.
Mechanical Design
Voltage IR Part
Number
110 V 0704640
230 V 0704641
110 V 0704642
230 V 0704643
110 V 0708098
230 V 0708099
110 V 0703464
230 V 0703463
110 V 0703464
230 V 0703463
16
Wattage Securing
Method
60W * Clip
120W * Clip
120W * O-Ring
140W Grip Screw
140W Grip Screw