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RG66007653–Rev.02
Contents
CONTENTS......................................................................................................................................................3
1GENERAL DESCRIPTION..................................................................................................................5
1.1THE LEP PRODUCT .................................................................................................................................5
1.1.1FIELD OF APPLICATION...........................................................................................................................6
1.1.2INNOVATION OF PRODUCT .....................................................................................................................9
1.2STRUCTURE.............................................................................................................................................10
1.3COOLING CIRCUIT ................................................................................................................................10
1.3.1COMPRESSORS......................................................................................................................................10
1.3.2HEAT EXCHANGERS...............................................................................................................................11
1.3.3UTILITY AND DISSIPATION SIDE CYCLE INVERSION VALVES (OPTIONAL)......................................11
1.3.4ELECTRONICALLY CONTROLLED EXPANSION VALVE...........................................................................12
1.3.5OTHER COOLING COMPONENTS...........................................................................................................13
1.3.6GENERAL THERMODYNAMIC CIRCUIT LAYOUTS..................................................................................14
1.4ELECTRICAL CONTROL BOARD ...........................................................................................................16
1.4.1CONTROL MICROPROCESSOR...............................................................................................................16
1.5CONFIGURABILITY,ACCESSORIES AND OPTIONS........................................................................17
2TECHNICAL DATA...............................................................................................................................18
2.1PERFORMANCE OF LEP PAND HHEAT PUMP UNITS...................................................................20
2.2CHARACTERISTIC CURVES OF THE HYDRAULIC PUMPS ASSOCIATED TO THE UNITS...........23
2.3NOISE EMISSION ..................................................................................................................................30
2.4OVERALL DIMENSIONS AND WEIGHT ..............................................................................................31
2.5OVERALL DRAWINGS...........................................................................................................................32
3INSTALLATION....................................................................................................................................37
3.1PRELIMINARY PROCEDURES ..............................................................................................................37
3.1.1LIFTING AND CONVEYANCE..................................................................................................................37
3.1.2UNPACKING............................................................................................................................................37
3.1.3SITING....................................................................................................................................................37
3.1.4INSTALLATION CLEARANCE REQUIREMENTS.......................................................................................38
3.2HYDRAULIC CONNECTIONS ................................................................................................................38
3.2.1HYDRAULIC CONNECTION TO EVAPORATOR .......................................................................................39
3.2.2FILLING TANK AND/OR PUMPS (IF FORESEEN BY THE SYSTEM).......................................................40
3.3ELECTRICAL CONNECTIONS................................................................................................................40
3.4ELECTRIC CONNECTIONS OF THE CIRCULATION PUMP................................................................41
3.4.1REMOTE CONTROLS..............................................................................................................................41
3.4.2REMOTE SUMMER-WINTER CHANGEOVER (HEAT PUMP AND MULTIFUNCTION VERSIONS)..........41
3.5STARTING UP .........................................................................................................................................41
3.5.1COMMISSIONING INSTRUCTIONS FOR LEP SERIES CHILLERS.........................................................42
3.5.2STARTING OPERATION..........................................................................................................................42
3.5.3CHECKS DURING OPERATION...............................................................................................................43
3.5.4CHECKING REFRIGERANT LOAD...........................................................................................................43
3.5.5STOPPING THE UNIT .............................................................................................................................43
