Related Manuals for Data Aire LCS
Summary of Contents for Data Aire LCS
- Page 1 Installation, Operation and Maintenance Manual 6, 8, 10 and 13 ton Air, Water and Glycol Cooled DX and Chilled Water...
- Page 2 Congratulations! You have selected a Data Aire precision control system, one of the fi nest available in the market today. Proper installation, operation and maintenance of this equipment will ensure years of optimal performance. This manual is intended to assist trained service personnel by providing necessary guidelines for this particular equipment.
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Page 3: Table Of Contents
Table of Contents INSTALLATION ......................6 Room Considerations ....................6 Inspection ........................6 Locating the Unit ......................6 1.3.1 Horizontal Airfl ow Units ....................7 1.3.2 Vertical Airfl ow Units ....................7 Paperwork ........................7 Storage ........................8 Model Identifi cation ....................8 PIPING ......................... - Page 4 Table of Contents, continued INSTALLATION OF REMOTE OUTDOOR HEAT EXCHANGER - (continued) Air Cooled Condensers - Model DARC ................18 4.5.1 Fan Speed Control ......................18 4.5.2 Ambient Thermostats ..................... 18 Fluid Coolers - Model DAFC ..................19 4.6.1 Fluid-Sensing Thermostats .................... 19 4.6.2 Energy Saver Cooling ....................
- Page 5 Table of Contents, continued REGULAR MAINTENANCE ITEMS (continued) Humidifi er Canisters ....................... 27 Fuses ..........................28 Heating Elements ......................28 Refrigerant Filter Drier ....................28 WARRANTY ........................29 10.0 CONTACT DATA AIRE ....................30 Line Sizing Chart ........................... 31 Monthly Maintenance Inspection Checklist ................... 32 Quarterly Maintenance Inspection Checklist .................
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Page 6: Installation
1.0 INSTALLATION There is no intent on the part of Data Aire, Inc. to defi ne local codes or statutes which may supersede common trade practices. The manufacturer assumes no responsibility for their interpretation. Consult local building codes and the National Electrical Code for special installation requirements. -
Page 7: Horizontal Airfl Ow Units
1.3.1 Horizontal Airfl ow Units All LCS units have horizontal airfl ow confi guration with a 29.5” tall evaporator section. Duct collars are factory provided for the supply and return air. Four threaded support rods must be securely attached to the building structure. Two fi eld provided support channels connect to the pairs of threaded support rod. -
Page 8: Storage
The order write-up should have the condenser or condensing unit model number. Refer to applicable condenser or condensing model number identifi cation. Example: DATA AIRE LCS unit, air cooled, 6 ton, 3Ø – 230 volt, split system with outdoor condenser and dual compressors –... -
Page 9: Piping
2.0 PIPING Split Air Cooled Unit Piping Refer to the attached line sizing chart on page 31 for a guideline for sizing refrigerant lines. The ultimate responsibility for line size selection is that of the installing contractor or project engineer. Data Aire does not assume this responsibility. -
Page 10: Connection Sizes, Air Cooled Units
2.1.4 Connection Sizes Air Cooled Units Model Circuiting Hot Gas Liquid Suction DALA 06 Single circuit 1/2” 1/2” 3/4” DALA 08 Single circuit 3/4” 5/8” 1 1/8” DALA 10 Single circuit 3/4” 5/8” 1 1/8” DALA 13 Single circuit 3/4” 5/8”... -
Page 11: Field Piping, Remote Condenser
2.1.5 Field Piping, Remote Condenser 2.1.6 Field Piping, Remote Condensing Unit... -
Page 12: Water/Glycol Cooled Unit Piping
Water/Glycol Cooled Unit Piping The required fi eld installed condenser water pipe sizes may or may not be the same as the connection sizes at the evaporator or fl uid cooler. (Refer to 2.1.4 for connection sizing.) This will depend on the length of pipe and the calculated pressure drop of peripheral components. -
Page 13: Auxiliary Chilled Water Coil Piping
Auxiliary Chilled Water Coil Piping Units with an Auxiliary Chilled Water cooling coil require a separate source of chilled water. These chilled water connection sizes will be equal to the condenser water connection sizes on the chart in Section 2.1.4. Units with an Energy Saver cooling coil typically have shared piping with the condenser supply and therefore do not require a separate water source. -
Page 14: Leak Testing
Leak Testing No installation is complete until the entire system has been thoroughly checked for leaks. This includes checking refrigerant tubing, fl are fi ttings, pressure controls, shrader fi ttings and compressor rotolock service valves. Check both fi eld and factory connections. In addition to the refrigeration system, check all condenser water lines, humidifi... -
Page 15: Electrical Connections
3.0 ELECTRICAL CONNECTIONS Before proceeding with the electrical connections, make certain that the volts, hertz and phase correspond to that specifi ed on the unit electrical nameplate. Use copper conductors only. Electrical Service Check to be sure the service provided by the utility is suffi cient to handle the additional load imposed by this equipment. -
Page 16: Remote Shutdown
Remote Shutdown Every Data Aire evaporator has remote shutdown contacts points available. This is intended for a fi eld supplied dry contact or switch to be wired across two terminals. When the contact or switch opens, the control circuit power is interrupted and the unit shuts down, including the control panel. The control circuit is 24 VAC and the fi... -
Page 17: Installation Of Remote Outdoor Heat Exchanger
4.0 INSTALLATION OF REMOTE OUTDOOR HEAT EXCHANGER Air cooled condensers and fl uid coolers have individual Installation, Operation and Maintenance manuals which should be referred to for more complete details. Rigging This section covers outdoor condensers/condensing units and fl uid coolers. Outdoor heat exchangers should be moved to their (typically rooftop) mounting location using a crane or fork lift. -
Page 18: Electrical Service
Noise factors should be also considered when locating an air cooled heat exchanger. Proximity to windows, walls, and surrounding structures can cause objections by the occupants. An acoustical expert should be consulted when noise is of a particular concern. Air cooled heat exchangers should be placed at a level that is higher than the indoor evaporator. -
Page 19: Fluid Coolers - Model Dafc
Typical settings for the ambient thermostats are as follows: Number of fans Header fan Fan 2 Fan 3 Fan 4 Fan 5 65° 75° 65° 75° 85° 65° 65° 85° 75° 50° Fluid Coolers - Model DAFC 4.6.1 Fluid-Sensing Thermostats Fluid cooler fan motors are cycled on and off by individual water-sensing thermostats strapped to the leaving water header. -
Page 20: Charging
It is likely that more refrigerant will be required to complete the charging procedure. Make sure all hoses are properly purged. Review the model number carefully because LCS units are available with either single or dual compressors. Before starting a compressor, the crankcase heater should be energized for a minimum of 12 hours to reduce the possibility of liquid slugging on start-up. -
Page 21: Fan Speed Control System Charging
407C and 104 - 121 psi for R 410A. The superheat at the compressor suction line at least 6 inches away from the compressor should be 8 - 15°. Note: Charging to a full liquid line sight glass should never be the sole means of determining the correct refrigerant charge. - Page 22 control valve will regulate the fl ow of refrigerant to ensure nearly constant receiver pressure. The condenser is partially fl ooded with liquid in cold weather. In warm weather the extra refrigerant is stored in the receiver. Flooded systems require more refrigerant than fan speed control systems. Connect the pressure gauge manifold set to the high and low ports near the compressor.
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Page 23: Water/Glycol Cooled Systems
Water/Glycol Cooled Systems 5.3.1. Water/Glycol Cooled Systems Charging All water/glycol cooled units are factory charged with refrigerant. The water regulating valve should be adjusted to maintain condensing temperature of 105 - 119° F. Saturated suction temperature should be 33° F or higher. The superheat at the compressor suction line at least 6 inches away from the compressor should be 8-15°... -
Page 24: High Pressure Cutout Switch
5.5.2. High Pressure Cutout Switch Each refrigerant circuit is protected by a high head pressure cutout switch with a manual reset button. The cutout pressure rating for refrigerant R-407C is 400 psi. Physical location is near the compressor which may be either in the evaporator or the condensing section. 5.5.3. -
Page 25: Copper Piping Internal Volume
7.0 CONTROLS Mini DAP II Microprocessor Control Panel The Mini DAP II microprocessor control panel is the standard control panel on the LCS equipment. There is a separate manual that goes into extensive detail regarding functions, features, programming and troubleshooting. -
Page 26: Secondary Heat Exchangers
The Mini DAP III microprocessor control panel has an entire manual dedicated to its use and operation. This manual must be referenced to complete a thorough unit installation. Start-up is not complete until the Mini DAP III control panel settings are established. 7.4 Secondary Heat Exchangers Most of the controls on remote condensers, condensing unit and fl... -
Page 27: Regular Maintenance Items Air Filters
8.3 Bearings LCS units with either one (1) and two (2) HP motors have permanent lubricated bearings. Motors of three (3) HP and above have a pillow block bearing that must be greased quarterly, or as needed. -
Page 28: Fuses
Fuses Always replace fuses with those of the equivalent rating with regard to: 1) amperage, 2) voltage, and 3) speed. For instance compressors and motors are inductive loads which require time delay fuses. Electric reheat and humidifi ers are resistive loads requiring fast acting fuses. Heating Elements Heating elements do not normally require maintenance. -
Page 29: Warranty
9.0 Warranty Policy Seller warrants its equipment to Buyer to be free from defects in material and workmanship for a period of eighteen (18) months from date of shipment, as long as equipment is utilized under normal conditions and service and is properly installed; however, the warranty shall not be applicable to any of the following items: refrigerant, belts, fi... -
Page 30: Contact Data Aire
10.0 Contact Data Aire Address: Data Aire, Inc. 230 W. BlueRidge Avenue Orange, CA 92865 Phone: 714-921-6000 800-347-AIRE (2473) Toll Free Fax: 714-921-6010 Main 714-921-6011 Engineering E-mail: tech_support@dataaire.com Technical Support engineering@dataaire.com Engineering sales@dataaire.com Sales Web site: www.dataaire.com Job Information: Data Aire Job Number: ________________________________________ Evaporator Serial Number: _____________________________________ Evaporator Model Number: _____________________________________ Condenser/Condensing Unit/... -
Page 31: Line Sizing Chart
RECOMMENDED LINE SIZING FOR AIR COOLED SPLIT SYSTEMS UP TO 200 EQUIVALENT FEET HOT GAS LINES SINGLE CIRCUIT SYSTEMS DUAL CIRCUIT SYSTEMS Unit Tons per EQUIVALENT FEET Unit Tons per EQUIVALENT FEET Tonnage Circuit Tonnage Circuit 7/8 1-1/8 1-1/8 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 7/8 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8... -
Page 32: Monthly Maintenance Inspection Checklist
Data Aire, Inc. Monthly Maintenance Inspection Checklist Model No. __________________ Serial No. ____________________ Prepared by: _______________ Date: ___ / ___/ 200__ Steam Generating Humidifi er (if applicable) Air Filters ___ Check canister for deposits and water ___ Check for restricted air fl ow level ___ Check condition of steam hose and Blower Section... -
Page 33: Quarterly Maintenance Inspection Checklist
Data Aire, Inc. Quarterly Maintenance Inspection Checklist Model No. _______________________ Serial No. ___________________________ Prepared by: _____________________ Date: ___ / ___/ 200__ Reheat (if applicable) Air Filters ____ Check reheat element(s) for dust ____ Check for restricted air fl ow ____ Check high limit switch operation ____ Check fi... -
Page 34: Superheat And Suction Pressure Troubleshooting Guide
Superheat and Suction Pressure Trouble Shooting Guide Low Suction Pressure and High Superheat 1. Moisture, dirt, wax 2. Undersized valve* 3. High superheat adjustment 4. Gas charge condensation 5. Dead thermostatic element charge 6. Wrong thermostatic charge 7. Evaporator pressure drop - no external equalizer 8. -
Page 35: Temperature Pressure Chart For R-22, R-407C And R-410A
Temperature Pressure Chart Temperature (°F) R-22 R-407C R-410A 50.0 43.6 89.7 51.2 44.7 91.6 52.4 45.9 93.5 53.7 47.1 95.5 54.9 48.4 97.5 56.2 49.6 99.5 57.5 50.9 101.6 58.8 52.1 103.6 60.2 53.4 105.7 61.5 54.8 107.9 62.9 53.2 110.0 64.3 57.5... -
Page 36: Index
Energy Saver ....... 13, 19, 25 Air Cooled Systems ....7, 14, 20, 21 Expansion Valve ......11, 12, 24 Air Filters ..........27 Expansion Tank ........12 Air Vents ..........12 Evaporator 9, 12, 13, 15, 16, 18, 19, 20, 24 Ambient Thermostats ..... - Page 37 Humidifi er Canister ........13, 27 Sight Glass ...... 19, 20, 21, 22, 23 Steam Generator Humidifi er ..13, 27 Start Up Sheet ........... 7 Storage ............8 Inspection ..........6 Strainer ............ 12 Installation ..........6 Subcooling ......20, 21, 22, 23 Internal Volume see Volume Suction Lines ......
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Page 38: Typical Mount Drawing (536-900-100)
LCS Units Typical Mounting... - Page 40 230 W. BlueRidge Avenue Orange, CA 92865 800-347-2473 www.dataaire.com e-mail: sales@dataaire.com A Member of the CS Group of Companies © 2009 Data Aire, Inc. Data Aire, Inc. reserves the right to make design changes for the purpose of product improvement or to withdraw any design without notice. DALAIOM-1209...