MAXA HWA1-A Series - Default Chapter; Table of Contents

HWA1-A & HWA1-H Air/Water chillers and heat pumps with axial fans
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INDEX
1 PURPOSES AND CONTENTS OF THE MANUAL ........................................................................................................................ 4
1.1 CONSERVATION OF THE MANUAL ......................................................................................................................................... 4
1.2 GRAPHIC SYMBOLS ................................................................................................................................................................ 4
2 SAFETY LAWS ......................................................................................................................................................................... 4
2.1 PERMITTED USES ................................................................................................................................................................... 4
3 GENERAL SAFETY GUIDELINES ............................................................................................................................................... 5
3.1 WORKERS’ HEALTH AND SAFETY ............................................................................................................................................ 5
3.2 PERSONAL SAFETY EQUIPMENTS ........................................................................................................................................... 5
3.3 SAFETY SYMBOLS ................................................................................................................................................................... 5
4 REFRIGERANT SAFETY DATA SHEET ........................................................................................................................................ 6
5 TECHNICAL CHARACTERISTICS ............................................................................................................................................... 7
5.1 CARPENTRY ............................................................................................................................................................................ 7
5.2 REFRIGERANT CIRCUIT ........................................................................................................................................................... 7
5.3 COMPRESSORS ....................................................................................................................................................................... 7
5.4 AIR-SIDE HEAT EXCHANGER ................................................................................................................................................... 7
5.5 FAN MOTOR ........................................................................................................................................................................... 7
5.6 USER-SIDE HEAT EXCHANGER ................................................................................................................................................ 7
5.7 ELECTRICAL PANEL ................................................................................................................................................................. 7
5.8 CONTROL SYSTEM .................................................................................................................................................................. 7
5.9 CONTROL AND PROTECTION DEVICES.................................................................................................................................... 8
5.10 HYDRAULIC CIRCUIT ............................................................................................................................................................... 8
5.11 FAN SPEED CONTROL ............................................................................................................................................................. 8
6 ACCESSORIES, SIZES AND VARIOUS AVAILABLE VERSIONS ..................................................................................................... 9
6.1 OPTIONAL ACCESSORIES ...................................................................................................................................................... 10
7 INSTALLATION ...................................................................................................................................................................... 11
7.1 GENERALITY ......................................................................................................................................................................... 11
7.2 LIFTING AND HANDLING ...................................................................................................................................................... 11
7.3 LOCATION AND MINIMUM TECHNICAL CLEARANCES .......................................................................................................... 11
7.4 HYDRAULIC CONNECTIONS .................................................................................................................................................. 12
7.5 HYDRAULIC CIRCUIT ................................................................................................................................................................... 13
7.5.1 Drainage system ........................................................................................................................................................... 13
7.5.2 Plant circuit loading ..................................................................................................................................................... 14
7.5.3 Plant drainage system .................................................................................................................................................. 14
7.6 REFRIGERANT CIRCUITS ....................................................................................................................................................... 14
7.6.1 Refrigerant circuit of HWA1-A 0140 – 0147 units ........................................................................................................ 14
7.6.2 Refrigerant circuit of HWA1-A 0260 – 0272 - 0285 ...................................................................................................... 15
7.6.3 Total heat recovery HWA1-A unit Refrigerant circuit ................................................................................................... 15
7.6.4 Desuperheater HWA1-A unit Refrigerant circuit .......................................................................................................... 16
7.6.5 Refrigerant circuit of HWA1-H 0140 – 0147 units ........................................................................................................ 16
7.6.6 Refrigerant circuit of HWA1-H 0260 – 0285 units ........................................................................................................ 17
7.6.7 Total heat recovery HWA1-H unit refrigerant circuit in cooling only ........................................................................... 17
7.6.8 Desuperheater HWA1-H unit refrigerant circuit .......................................................................................................... 18
7.7 WIRING ................................................................................................................................................................................ 18
7.7.1 Wiring terminal block ................................................................................................................................................... 19
7.8 PM MODULE PHASES PROTECTION...................................................................................................................................... 19
7.1 PLANT MANAGEMENT OPTIONAL MODUL “GI” TERMINAL BLOCK ...................................................................................... 19
8 START UP .............................................................................................................................................................................. 20
8.1 POWER-ON/OF THE UNIT ..................................................................................................................................................... 20
9 INDICATIONS FOR THE USER ................................................................................................................................................. 20
10 SHUTDOWNS FOR LONG PERIODS .................................................................................................................................... 21
11 PERIODICAL CONTROLS AND MAINTENANCE .................................................................................................................... 21
11.1 ENVIRONMENTAL PROTECTION........................................................................................................................................... 21