Emerson Copeland Scroll ZH56 K4E ZH11 ME Series Manuals

Scroll compressors for Dedicated Heat Pumps ZH56 K4E...ZH11 ME Application Guidelines AAPPPPLLIICCAATTIIO ONN G GUUIIDDEELLIINNEESS:: CCO OPPEELLAANNDD SSCCRRO OLLLL™ ™ CCO OM MPPRREESSSSO ORRSS FFO ORR DDEEDDIICCAATTEEDD HHEEAATT PPUUM MPPSS,, ZZHH 5566 KK44EE … … ZZHH 1111 M M//EE 1 Introduction ..........................................................................................................................................................2 2 Safety Instructions................................................................................................................................................2 3 Nomenclature.......................................................................................................................................................3 4 Qualified Refrigerant ............................................................................................................................................3 5 Application Envelope ...........................................................................................................................................3 6 Lubrication............................................................................................................................................................4 7 Accumulators .......................................................................................................................................................5 8 Crankcase Heaters ..............................................................................................................................................5 9 Screens................................................................................................................................................................5 10 Pump down ..........................................................................................................................................................5 11 Discharge Temperature Protection......................................................................................................................6 12 Low Ambient Cut-Out...........................................................................................................................................6 13 Pressure Controls ................................................................................................................................................6 14 Shut off Sound .....................................................................................................................................................6 15 Starting.................................................................................................................................................................6 16 Deep-Vacuum Operation .....................................................................................................................................6 17 Electrical Installation ............................................................................................................................................6 18 Electronic Motor Protection..................................................................................................................................7 19 Protector Functional Check and Failure Detection ..............................................................................................8 20 High Potential Testing..........................................................................................................................................9 21 Compressor Functional Check.............................................................................................................................9 22 Excessive Liquid Floodback.................................................................................................................................9 22.1 Continuous Floodback.....................................................................................................................................9 22.2 Repeated Flood back during Defrost.............................................................................................................10 23 Installation..........................................................................................................................................................10 24 Service ...............................................................................................................................................................10 25 New Installations................................................................................................................................................11 26 Field Service ......................................................................................................................................................11 27 Shut-off Valves and Adapters ............................................................................................................................11 28 Suction Line Noise and Vibration.......................................................................................................................12 29 Shell Temperature..............................................................................................................................................13 30 System Charging Procedure..............................................................................................................................13 31 Unbrazing System Components ........................................................................................................................13 32 Compressor Replacement .................................................................................................................................13 33 Pressure Equipment Directive ...........................................................................................................................13 C6.2.16/1004/E 1 1 Introduction The Scroll compressor has been under development at Copeland since 1979 and is the most efficient and durable compressor Copeland has ever developed for air-conditioning and refrigeration. Copeland has now invested significant resources and carried out extensive testing to optimize the complete range of ZH Scroll compressors for dedicated Heat Pump applications. It offers very low vibration and sound levels and is tolerant to stresses caused by liquid slugging, flooded starts, and debris commonly found in refrigeration systems. For detailed information, please, refer to the Copeland Selection Software accessible from the Copeland website at www.ecopeland.com. These guidelines are not meant to replace the system expertise available from system manufacturers. 2 Safety Instructions Only qualified personnel should install and repair COPELAND compressors. � Refrigerant compressors must be employed only for the use they are made for. � Only approved refrigerant and refrigerating oils must be used. � Do not start the compressor until it is charged with refrigerant. � Correctly used, the compressor and the pressure line piping may reach temperatures that may cause burning if touched. � Wear safety goggles when working on open systems. � If the refrigerant needs to be removed from the system, do not disperse it in the environment, use the correct equipment & method of removal. � For storage, use original packaging and avoid collisions and tilting. � Trained electrical personnel must connect the compressor and its accessories. � All valid standards for connecting electrical and refrigeration equipment must be observed. � Limit values for the supply voltage of the unit may not be exceeded. � It is not allowed to run a test without the compressor being connected to the system and without refrigerant. It is of vital importance that the discharge stop valve has been fully opened before the compressor is started. If the discharge stop valve is closed or partly closed an unacceptable pressure with accordingly high temperatures may develop. When operating with air the so- called diesel effect may occur, i.e. the air sucked in is mixed with oil gas and can explode due to the high temperature, and thereby destroy the compressor. C6.2.16/1004/E 2