Table Of Contents - Carrier Aquaforce 30XA302 Installation, Operation And Maintenance Instructions

Air-cooled screw chillers
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1 - INTRODUCTION ..................................................................................................................................................................... 4
1.1 - Installation safety considerations ........................................................................................................................................... 4
1.2 - Equipment and components under pressure ........................................................................................................................ 5
1.3 - Maintenance safety considerations ........................................................................................................................................ 5
1.4 - Repair safety considerations ................................................................................................................................................... 7
2 - PRELIMINARY CHECKS ...................................................................................................................................................... 8
2.1 - Check equipment received ...................................................................................................................................................... 8
2.2 - Moving and siting the unit ....................................................................................................................................................... 8
3 - DIMENSIONS, CLEARANCES ........................................................................................................................................... 10
(option 254/255) ......................................................................................................................................................................................11
Cu/Al heat exchanger (option 254/255) ............................................................................................................................... 13
Cu/Al heat exchanger (option 254/255) .............................................................................................................................................14
Cu/Al heat exchanger (option 254/255) .............................................................................................................................................14
Cu/Al heat exchanger (option 254/255) ...........................................................................................................................................15
Cu/Al heat exchanger (option 254/255) ...........................................................................................................................................15
3.12 - Multiple chiller installation ................................................................................................................................................. 16
3.13 - Distance to the wall .............................................................................................................................................................. 16
4 - PHYSICAL AND ELECTRICAL DATA FOR 30XA UNITS ........................................................................................ 17
4.1 - Physical data 30XA 252-852 - standard units and units with option 119* ....................................................................... 17
4.2 - Physical data 30XA 252-902 - units with option 254 and 255**........................................................................................ 19
4.2 - Physical data 30XA 1002-1502 - units with option 254 and 255** (continued) .............................................................. 20
4.3 - Short-circuit stability current for all units ........................................................................................................................... 20
4.4 - Electrical data ......................................................................................................................................................................... 21
4.4 - Electrical data (continued).................................................................................................................................................... 22
4.4 - Electrical data (continued) ................................................................................................................................................... 23
4.4 - Electrical data (continued) ................................................................................................................................................... 24
4.5 - Compressor electrical data .................................................................................................................................................... 25
4.6 - Compressor usage per circuit (A, B, C, D) .......................................................................................................................... 25
4.7 - Electrical data, optional hydronic module .........................................................................................................................................26
5 - ELECTRICAL CONNECTION ............................................................................................................................................ 27
5.1 - Power supply ........................................................................................................................................................................... 27
5.2 - Voltage phase imbalance (%) ............................................................................................................................................... 27
5.3 - Power connection/disconnect switch .................................................................................................................................... 27
5.4 - Recommended wire sections ................................................................................................................................................ 27
5.5 - Power cable entry ................................................................................................................................................................... 27
5.6 - Field control wiring ................................................................................................................................................................ 28
6 - APPLICATION DATA ........................................................................................................................................................... 29
6.1 - Operating range ...................................................................................................................................................................... 29
6.2 - Minimum chilled water flow (units without hydronic module) ........................................................................................ 29
6.3 - Maximum chilled water flow (units without hydronic module) ....................................................................................... 29
6.4 - Variable flow evaporator ....................................................................................................................................................... 30
6.5 - System minimum water volume ........................................................................................................................................... 30
6.6 - Maximum system water volume ........................................................................................................................................... 30
6.7 - Evaporator water flow rate ................................................................................................................................................... 30
6.8 - Evaporator pressure drop curve ........................................................................................................................................... 31
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