Daikin EWWH320DZXSA1 [2/32] Downloaded from www manualslib com manuals search engine
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Daikin EWWH320DZXSA1 [2/32] Downloaded from www manualslib com manuals search engine

Daikin EWWH955DZXEA2 [2/32] Downloaded from www manualslib com manuals search engine
D-EIMWC01405-18EN- 2/32
Contents
1 INTRODUCTION ...................................................................................................................................................................... 6
1.1 General Description .................................................................................................................................................................. 6
1.2 Application ................................................................................................................................................................................ 6
1.3 Information about R1234ze(E) .................................................................................................................................................. 6
1.4 Installation Safety ..................................................................................................................................................................... 7
1.4.1 Additional guidelines for safe use of R1234ze(E) for equipment located in the open air ............................................ 7
1.4.2 Additional guidelines for safe use of R1234ze(E) for equipment located in a machinery room................................... 7
2 INSTALLATION ....................................................................................................................................................................... 9
2.1 Storage ..................................................................................................................................................................................... 9
2.2 Receiving and handling ............................................................................................................................................................ 9
2.3 Lifting instructions ................................................................................................................................................................... 10
2.4 Positioning and assembly ....................................................................................................................................................... 11
2.5 Shock absorbers ..................................................................................................................................................................... 11
2.6 Anchoring ............................................................................................................................................................................... 12
2.7 Water pipes ............................................................................................................................................................................ 12
2.7.1 Evaporator and condenser water pipes ................................................................................................................... 12
2.7.2 Flow Switch ............................................................................................................................................................ 12
2.8 Water treatment ...................................................................................................................................................................... 13
2.9 Temperature limits and water flow .......................................................................................................................................... 14
2.10 Minimum water content in the system ..................................................................................................................................... 14
2.11 Evaporator frost protection...................................................................................................................................................... 15
2.12 Condenser protection and design considerations .................................................................................................................... 15
2.12.1 Condensation control with evaporative cooling tower ......................................................................................... 15
2.12.2 Condensation control with well water ................................................................................................................. 16
2.13 Chilled water control sensor .................................................................................................................................................... 16
2.14 Safety Valve ........................................................................................................................................................................... 17
2.15 Open the isolation and/or shut off valves ................................................................................................................................ 17
2.16 Electrical connections ............................................................................................................................................................. 17
2.17 Phase imbalance .................................................................................................................................................................... 17
2.18 Control circuit ......................................................................................................................................................................... 17
3 OPERATION .......................................................................................................................................................................... 19
3.1 Operator’s responsibilities....................................................................................................................................................... 19
3.2 Unit description ....................................................................................................................................................................... 19
3.3 Safeties for each cooling compressor ..................................................................................................................................... 20
3.4 System safeties ...................................................................................................................................................................... 20
3.5 Regulation type....................................................................................................................................................................... 20
3.6 Compressor Lead-Lag ............................................................................................................................................................ 20
3.7 High condensing pressure control ........................................................................................................................................... 20
4 MAINTENANCE ..................................................................................................................................................................... 21
4.1 Pressure/Temperature Table .................................................................................................................................................. 22
4.2 Routine maintenance .............................................................................................................................................................. 23
4.2.1 Check condenser performance ............................................................................................................................... 23
4.2.2 Electronic expansion valve ...................................................................................................................................... 23
4.2.3 Cooling circuit ......................................................................................................................................................... 23
4.2.4 Refrigerant charge .................................................................................................................................................. 26
4.2.5 Check the refrigerant charge ................................................................................................................................... 26
4.2.6 Electrical Installation ............................................................................................................................................... 26
4.3 Cleaning and Storage ............................................................................................................................................................. 27
4.4 Seasonal maintenance ........................................................................................................................................................... 27
4.4.1 Seasonal shutdown ................................................................................................................................................ 27
4.4.2 Seasonal start up .................................................................................................................................................... 27
5 SERVICE SCHEDULE ........................................................................................................................................................... 27
6 MAINTENANCE SCHEDULE ................................................................................................................................................. 28
7 CHECKS BEFORE FIRST START UP ................................................................................................................................... 29
8 IMPORTANT INFORMATION ON USED REFRIGERANT ..................................................................................................... 30
8.1 Factory and Field charged units instructions ........................................................................................................................... 30
9 PERIODIC CHECKS AND COMMISSIONING OF PRESSURE VESSELS ............................................................................ 31
10 DEMOLITION AND DISPOSAL ............................................................................................................................................. 31
11 DURATION ............................................................................................................................................................................ 31
List of Figures
Fig. 1 - Single compressor unit component descriptions ........................................................................................................................... 3
Fig. 2 - Dual compressor unit component descriptions .............................................................................................................................. 4
Fig. 3-Description of the labels applied to the electric panel ...................................................................................................................... 5
Fig. 4 - Unit positioning ........................................................................................................................................................................... 11
Fig. 5-Water quality ................................................................................................................................................................................ 13
Fig. 6 – Electrical Panel Layout .............................................................................................................................................................. 20
Fig. 7-P&ID Mono and Dual compressor ................................................................................................................................................ 24
Fig. 8-P&ID Mono and Dual compressor with economizer ...................................................................................................................... 25

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