3
CONTENTS
1 - INTRODUCTION ........................................................................................................................................................................4
1.1 - Installation safety considerations ...............................................................................................................................................4
1.2 - Equipment and components under pressure ...............................................................................................................................4
1.3 - Maintenance safety considerations .............................................................................................................................................5
1.4 - Repair safety considerations.......................................................................................................................................................5
2 - PRELIMINARY CHECKS ..........................................................................................................................................................7
2.1 - Check equipment received .........................................................................................................................................................7
2.2 - Moving and siting the unit .........................................................................................................................................................7
3 - DIMENSIONS/CLEARANCES ..................................................................................................................................................9
4 - PHYSICAL DATA ................................................................................................................................................................... 11
5 - ELECTRICAL DATA .............................................................................................................................................................. 11
6 - APPLICATION DATA............................................................................................................................................................. 14
6.1 - Unit operating range .................................................................................................................................................................14
6.2 - Evaporator water flow rates .....................................................................................................................................................14
6.3 - Minimum water flow rate .........................................................................................................................................................14
6.4 - Maximum evaporator water flow rate ......................................................................................................................................14
6.5 - Water loop volume ...................................................................................................................................................................14
6.6 - Unit operating range at full and part load.................................................................................................................................15
6.7 - Pressure drop in the plate heat exchangers ...............................................................................................................................15
7 - ELECTRICAL CONNECTION ............................................................................................................................................... 16
7.1 - Control box...............................................................................................................................................................................16
7.2 - Power supply ............................................................................................................................................................................17
7.3 - Voltage phase imbalance (%) ...................................................................................................................................................17
8 - RECOMMENDED WIRE SECTIONS .................................................................................................................................... 18
8.1 - Field control wiring ..................................................................................................................................................................18
9 - WATER CONNECTIONS ....................................................................................................................................................... 19
9.1 - Operating precautions and recommendations ..........................................................................................................................19
9.2 - Hydronic connections...............................................................................................................................................................20
9.3 - Frost protection ........................................................................................................................................................................20
10 - NOMINAL SYSTEM WATER FLOW CONTROL ............................................................................................................. 22
10.1 - Water flow control procedure ................................................................................................................................................22
10.2 - Pump pressure/flow rate curves .............................................................................................................................................24
10.3 - Available static system pressure .............................................................................................................................................25
11 - START-UP .............................................................................................................................................................................. 26
11.1 - Preliminary checks .................................................................................................................................................................26
11.2 - Actual start-up ........................................................................................................................................................................26
11.3 - Operation of two units in master/slave mode.........................................................................................................................26
12 - MAINTENANCE ....................................................................................................................................................................27
12.1 - General maintenance of the refrigerant circuit.......................................................................................................................27
12.2 - Refrigerant charge ..................................................................................................................................................................27
12.3 - Electrical maintenance ...........................................................................................................................................................28
12.4 - Condenser coil........................................................................................................................................................................29
13 - AQUASNAP MAINTENANCE PROGRAM.......................................................................................................................30
13.1 - Maintenance schedule ............................................................................................................................................................30
13.2 - Description of the maintenance operations ............................................................................................................................30
14 - START-UP CHECKLIST FOR 30RA LIQUID CHILLERS (USE FOR JOB FILE) ....................................................32
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