I. COPELAND SCROLL COMPRESSORS

Most Recommended for HFC-134a Systems

• One of the most preferred compression  techniques.                                   

• Continues operation up to 140°F ambient temperature.

• Desirable behavior of performance with temperature change, which means less reduction of capacity at high ambient, and lower chance to freeze up evaporator at low ambient.

• Automatic start-unload.

• Zero leak possibility.

• Quietest operation.

• Considerable tolerance for liquid flooding back.

• Most compact in size, lightest in weight, and lowest cost.

• No oil pump required.

• Support all standard industrial powers and VFD operation.

II. BITZER OCTAGON SEMI HERMETIC RECIPROCATING COMPRESSORS           

Most Recommended for HFC-124 Systems, Optional for HFC-134a Systems

• Continues operation up to 160°F ambient temperature for HCFC-124 systems, and up to 140°F for HFC-134a systems.

• Capable of 50% unloading for all HCFC-124 systems, and for HFC-134a systems with capacity of 30,000Btu/H and higher.

• Very low possibility of leaks.

• Quiet operation.

• No oil pump required.

• Support all standard industrial powers and VFD operation.

III. BITZER OPEN DRIVE COMPRESSORS                                                               

For Extreme High Ambient and Special Power Supplies Only

• Capable of operating over 160°F ambient for HCFC-124 systems.

• Flexible for VDC and special VAC power supplies.

• 50% unloading available only for HCFC-124 systems with capacity of 36,000Btu/h and higher, and for HFC-134a systems of 50,000Btu/h and higher.

• Equipped with oil pump.

• Sensitive to liquid flood back due to fluctuation of ambient condition.

• Certain risk of front seal leakage.