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Страница 2: ...ground in areas such as HVAC electrical plumbing and electronics as applicable WARNING Service performed by unauthorized or unqualified technicians may void manufacturers warranties and could result i...
Страница 3: ...Lines 21 Liquid Lines 21 Suction Lines 22 Connection Sizes Air Cooled Units 22 Connection Sizes Water Glycol Cooled Units 23 Connection Sizes DX Water Glycol Cooled Units 3 Way Chilled Water Valves 2...
Страница 4: ...Stage Evacuation 46 Third Stage Evacuation 46 Final Evacuation Stage 47 General Pre Charging Guidelines 47 Voltage Phase Check 48 Evaporator Power Phase Check 48 Fixed Speed Scroll Compressor Phase C...
Страница 5: ...0 Humidifier Canisters 70 Refrigerant Filter Drier 70 EC Plenum Plug Fans 71 Electronically Commutated Motors 71 EC Motor Testing 72 MAINTENANCE INSPECTION CHECKLIST 73 Frequently Asked Questions FAQ...
Страница 6: ...ts 2 Way CW Valve23 Table 12 Connection Sizes Chilled Water Units Inches OD 23 Table 13 Three Phase Voltage Tolerance 39 Table 14 Remote Alarm Contacts Terminals 41 Table 15 Liquid Line Multiplier 49...
Страница 7: ...for data centers Operating outside this envelope can alter the operating performance and decrease equipment reliability Return air to the unit must be no cooler than the ASHRAE recommendation for pro...
Страница 8: ...es important wiring diagrams specific component literature warranty registration cards and other valuable paperwork including a copy of this Installation Operation and Maintenance manual A yellow tag...
Страница 9: ...m components electrical components etc Freezing temperatures must be avoided Humidity range 25 to 50 RH High humidity may cause damage to insulation and electrical components Storage in moist air abov...
Страница 10: ...and outlet connections capped or closed tight to prevent foreign materials and liquids from gaining entrance during the storage period When equipment is installed after storage caution should be take...
Страница 11: ...raining that will enable them to perform their assigned tasks properly and safely It is essential that prior to performing any task on this equipment this individual shall have read and understood thi...
Страница 12: ...et jacks If using a forklift or pallet jack make sure that the forks if adjustable are spread to the widest allowable distance that will fit under the skid Ensure the fork length is suitable for the u...
Страница 13: ...of polyethylene is often used on walls and ceilings Walls and floors must also be painted with vapor seal paint All doors to the controlled space should be equipped with weather seals to prevent the...
Страница 14: ...safe distance from the unit The unit may be too tall to fit through a doorway while on the skid Measure the unit and doorway heights and refer to the installation plans to verify clearances prior to...
Страница 15: ...r condenser water chilled water and or hot water Installation of units above equipment that could sustain water damage should be avoided Horizontal Airflow Units All LCS units have horizontal airflow...
Страница 16: ...Typical Installation Methods NOTES 1 The unit must be level when installation is complete 2 Add an additional 4 1 2 for an Energy Saver or Auxiliary Chilled Water coil option Figure 2 Typical Installa...
Страница 17: ...and maintenance manuals Piping All refrigerant piping should be is Type L Air Conditioning Refrigeration ACR hard drawn copper pipes Soft copper is unacceptable When brazing refrigerant lines an iner...
Страница 18: ...ave been removed from the ends of the tubes Ensure that all loose material has been cleaned from inside the tubing before brazing Keep piping clean and dry especially on units with R 410A refrigerant...
Страница 19: ...a nitrogen holding charge Do not vent the evaporator until all refrigerant piping is in place ready for connection to the evaporator and condenser The discharge suction and liquid lines need to be re...
Страница 20: ...y The liquid line pressure drop should not exceed 9 PSI 62 kPa for R 410A and 5 PSI 35 kPa for R 407C The recommended liquid velocity should be between 200 and 300 FPM 1 to 1 5 m sec To avoid excessiv...
Страница 21: ...0 15 2 100 30 5 150 45 7 200 61 0 Horizontal Vertical Down Vertical Up Horizontal Vertical Down Vertical Up Horizontal Vertical Down Vertical Up Horizontal Vertical Down Vertical Up 6 3 5 8 5 8 5 8 5...
Страница 22: ...rtical Up Horizontal Vertical Down Vertical Up Horizontal Vertical Down Vertical Up 6 3 7 8 7 8 7 8 7 8 7 8 7 8 7 8 7 8 8 4 7 8 7 8 1 1 8 7 8 1 1 8 7 8 1 1 8 7 8 10 5 7 8 7 8 1 1 8 7 8 1 1 8 7 8 1 1 8...
Страница 23: ...Cooled Units 3 Way Chilled Water Valves Table 10 Connection Sizes Inches OD Water Glycol Cooled Units 3 Way CW Valve Model Number Chilled Water In Supply Valve CV DAL 06 1 1 8 14 0 DAL 08 1 5 8 20 0...
Страница 24: ...e check valves are included internally in the evaporator section 4 Slope horizontal lines downward in the direction of the refrigerant flow 1 2 13 mm for every 10 feet 3 1 meters of line length 5 Inve...
Страница 25: ...All piping to be per local and or state code 2 Condenser to be no more than 15 feet 4 6 M below evaporator 3 Slope horizontal lines downward in the direction of the refrigerant flow 1 2 13 mm for eve...
Страница 26: ...Over cooling or under cooling the fluid should be avoided NOTE Every application will have a different ambient temperature and indoor heat load air distribution profile Therefore it is not possible t...
Страница 27: ...w the evaporator drain pan The plenum has knockouts that allow routing of the field supplied and installed condensate drain piping system The drain line can be routed out either side of these units So...
Страница 28: ...r equipment Do not locate unit directly above any equipment that could sustain water damage It is recommended to install leak detection equipment for unit and supply lines Condensate Trap Probably the...
Страница 29: ...2 Some applications have no convenient means of allowing a gravity drain In this case a condensate pump can be used These come either factory mounted or shipped loose 3 Factory mounted condensate pump...
Страница 30: ...supply return air plenum 2 The suction line of the pump needs to be lower than the drain line of the unit L1 Minimum 1 25 4 mm L2 Fan static pressure x 1 5 3 Bracket drawing 550 021 006 to be mounted...
Страница 31: ...am generating humidifier with softened water Also do not use a hot water source Refrigerant Piping Protection The refrigerant in the system s is under high pressure and this pressure can rapidly incre...
Страница 32: ...d on length of run and the maximum water flow required The required field installed fluid cooler pipe sizes may or may not be the same as the connection sizes on the fluid cooler Refer to the Fluid Co...
Страница 33: ...anufacturer s guidelines Figure 6 Typical Water Glycol System NOTE Unless otherwise specified by job specific documentation 1 The expansion tank is a required component of a proper system installation...
Страница 34: ...r WARNING With any fluid connection there is risk of leakage Water leakage could result in property damage to mission critical equipment A water drain connection is required Units with optional steam...
Страница 35: ...tment Contact Data Aire Service Department for details The commissioning includes pre startup inspections of installed components subsystems and systems and the execution of the verification and funct...
Страница 36: ...nsed and qualified electrician Risk of electrical shock could result in injury or death Disconnect all remote electrical facility power prior to working on the unit All wiring must conform to local an...
Страница 37: ...gh voltage wiring Upon arrival of the unit inspect all wiring and electrical components for damage either visible or concealed before installation Use correctly sized copper wire only and verify that...
Страница 38: ...uit breaker or fuse size required to protect the system Max Fuse or Max CKT BKR indicates the maximum breaker or fuse size and this information is used to size the appropriate fuses or a Heating Air C...
Страница 39: ...required Consult Data Aire Parts department for detailed information In this case the installing contractor must follow the applicable electrical codes to determine the required wire gauge Condensing...
Страница 40: ...res Mini dap4 Controller The Data Aire Computer Room Air Conditioner CRAC or Computer Room Air Handler CRAH is furnished with a microprocessor based Mini dap4 controller The controller includes unit c...
Страница 41: ...h ships loose normally require a separate source of 110 volt power Always check the pump power requirements before connecting power The condensate pump is available in other voltages Condensate pumps...
Страница 42: ...l Simply slide the manual switches to energize the fan compressor s humidification reheat and other functions as applicable Some LCS may have a special Electronically Commutated EC plug fan motor and...
Страница 43: ...ing diagram in the evaporator will indicate field interface terminals to the secondary heat exchanger The internal wiring of the secondary heat exchanger is found on a separate diagram which can be fo...
Страница 44: ...icating properties of the oil The risk of acid formation is also increased by non condensable and moisture and this condition can also lead to copper plating These phenomena may cause both mechanical...
Страница 45: ...of the check valve and on the liquid line before the expansion valve attach your Schrader valve core removal tools and hoses here A micron gauge should be fitted to the system at the furthest point f...
Страница 46: ...minutes 7 Verify that there are no nitrogen leaks 8 Carefully release the nitrogen charge Watching the gauge until it reads 1 PSIG 7 kPa Third Stage Evacuation 1 Move the vacuum hoses back to the vacu...
Страница 47: ...system can be charged with refrigerant 9 Make sure all service and field installed ball valve are open and remain open for charging 10 Ensure all valve cores and caps are reinstalled on the Schrader...
Страница 48: ...hile observing the receiver sight glass Heat load is required when adjusting charge use load banks to offset the cooling load Suction pressure should be equal to 33 F 0 56 C saturated temperature or g...
Страница 49: ...unit heat exchangers are only offered in three phase voltages and the individual axial EC fan motors will only operate in one direction but the rotation of the compressor on GHRU units must be checke...
Страница 50: ...0 407 20 33 40 65 60 98 81 31 Component Functional Test Critical components can be functionally verified by using the manual mode of the Mini dap4 See Mini dap4 User Manual for details regarding how...
Страница 51: ...sphere per the latest edition of ASHRAE Standard 15 and or any local building fire or mechanical codes This applies to all units with either shell and tube condensers or high pressure relief valve opt...
Страница 52: ...ARC 11XX Option GHRC 053XX or DARC 15XX Option GHRC 060XX or DARC 17XX Option GHRC 083XX or DARC 24XX Option GHRC 098XX or DARC 28XX Option 15 9 18 1 15 6 18 7 26 0 17 0 14 4 17 5 20 2 28 6 DALA 10XX...
Страница 53: ...1 22 2 24 8 29 5 36 8 17 7 20 8 23 4 24 4 35 4 DALA 13XX GHRC 053XX or DARC 15XX GHRC 060XX or DARC 17XX Option GHRC 074XX or DARC 21XX Option GHRC 098XX or DARC 28XX Option GHRC 141XX or DARC 40XX O...
Страница 54: ...e working within If the unit is equipped with an optional disconnect switch turn the disconnect switch to the ON position to allow facility electrical power to the unit The unit Mini dap4 controller m...
Страница 55: ...0A Conditions R 407C Conditions Discharge Pressure 322 PSIG 2220 kPa minimum 199 PSIG 1372 kPa minimum Liquid Line Pressure 290 to 390 PSIG 2000 to 2688 kPa 245 to 285 PSIG 1689 to 1965 kPa Liquid Lin...
Страница 56: ...rences liquid slugging or vacuum operation The below system refrigerant charge procedure is strongly recommended to reduce these risks WARNING The compressor power must be OFF and safeties ON and prev...
Страница 57: ...system increase installation time and increase the refrigerant charge The loss of subcooling should be recognized If a flooded system is required consult the Data Aire prior to installation Applicatio...
Страница 58: ...oil The receiver package s is typically mounted outdoors near the condenser If the receiver package s are installed indoors a check valve is required on the liquid line at the condenser outlet and a l...
Страница 59: ...t to the high and low ports near the compressor Connect the charging line to the refrigerant tank and set for liquid feed Open the refrigerant tank valve and purge the line Use a liquid charging adapt...
Страница 60: ...t glass During extremely cold weather all the condenser fans may need to be deenergized to allow head pressure to increase Once you reach the pressure value shown below enable the condenser fans and c...
Страница 61: ...56 to 7 2 8 to 10 13 3 to 12 2 8 to 15 13 3 to 9 4 Table 24 Packaged Units with Receivers Acceptable parameters range for water glycol packaged units with receivers with return air temperature of 65 F...
Страница 62: ...lower the superheat 3 Turn the adjusting stem clockwise to increase the superheat NOTICE Make no more than one turn of the stem at a time As long as thirty minutes 30 may be required for the system to...
Страница 63: ...ator during the OFF cycle The Liquid Line Solenoid Valve s LLVS are a direct acting NC normally closed i e closed when deenergized solenoid operated valve s The advantage is the valve is closed when t...
Страница 64: ...1 5 43 5 DALG 13 Dual Circuit 5 0 18 9 11 5 43 5 6 and 8 Ton Units have a 4 Row Energy Saver coil 10 and 13 Ton units have a 3 Row Energy Saver coil Fluid Cooler Internal Volume Information regarding...
Страница 65: ...nt companies The following should be paid attention to in daily maintenance 6 2 3 2 Undissolved solids turbid water If undissolved solids and other fibers are in the water the channels of the condense...
Страница 66: ...iping systems and components The chemistry of the water used must be considered because water from some sources may contain corrosive elements that reduce the effectiveness of the inhibited formulatio...
Страница 67: ...is extremely undesirable in a closed loop system CAUTION Risk of using the wrong type of glycol can cause piping damage coolant fluid leaks and catastrophic and expensive building and equipment damage...
Страница 68: ...ual dedicated to its use and operation This manual must be referenced to complete a thorough unit installation Startup is not complete until the Mini dap4 controller settings are established Optional...
Страница 69: ...e switch for proper adjustment temporarily cover approximately 75 of the return air opening using heavy cardboard or similar material The alarm should energize when 75 of the air is blocked simulating...
Страница 70: ...ergized the burning debris can create smoke or an unpleasant odor To help avoid a problem periodic cleaning is recommended Humidifier If the unit is provided with an optional self contained microproce...
Страница 71: ...ut line power i e 208 230V 3PH 60HZ or 460V 3PH 60HZ Do not carry out any work on electrically live parts Even after disconnection the de link circuit is still live Always wait at least 3 minutes EC m...
Страница 72: ...dap4 has a time delay before the No Airflow alarm is energized It is adjustable from 5 to 180 seconds in 5 second increments On site where a voltage problem is known to exist the delay can be adjuste...
Страница 73: ...n Check operation sequence Check calibration of change over thermostat Energy Saver system only Controls Type Mini dap4 Expanded dap4 Check unit control operation Check operation of the following High...
Страница 74: ...n and Pump if equipped Check for leaks Check for debris Inspect check float operation Check pump operation Condensers Water Cooled Check for water glycol leaks in the piping area Water regulating valv...
Страница 75: ...nspect fan blade s Check wiring Inspect piping for leaks Glycol Pump Monthly if applicable Glycol leaks pump area Pump operation Auto air vent clean of mineral deposits Glycol Pump Quarterly if applic...
Страница 76: ...device This is to help determine the maximum protective device Question 4 What is the input voltage tolerance Answer In general it is 10 but refer to Electrical Section for more details Question 5 Wil...
Страница 77: ...l ratings are located on the unit serial name plate label Question 15 What is the SCCR rating for the unit Answer SCCR is short circuit current rating Unless specified the SCCR rating is 10 kA root me...
Страница 78: ...eam generated All humidifiers can be adjusted within the range minimum to 100 Factory setting is 60 of capacity Question 5 Is an air vent valve required in the piping when an expansion tank is used An...
Страница 79: ...strainer 12 Low pressure drop across the valve a Same as 11 above b Undersized distributor nozzle or circuits c Low condensing temperature 1 Oversized TXV 2 TXV seat leak 3 Low superheat adjustment 4...
Страница 80: ...vice dataaire com Engineering dataaire com Sales dataaire com Fax 714 921 6010 Main 714 921 6011 Engineering 714 921 6022 Parts Sales Web Site www dataaire com Job Unit Information Data Aire Job Numbe...
Страница 81: ...8 71 Evacuation 44 45 46 47 50 56 Expanded dap4 68 F FAQ 76 77 Filter 70 FLA 76 Flooded system 57 59 Frequently Asked Questions FAQ 76 Full Load Amps FLA 76 Fuse 38 G Glycol system 38 Glycol Systems 6...
Страница 82: ...74 75 Remote 24 25 38 40 41 68 76 77 Remote Sensor 41 Rigging 14 S Shutoff valve 32 Sight glass 55 Spare air filters 69 Special Service Equipment 44 Storage 8 9 Subcooling 55 61 Superheat 55 61 79 T T...
Страница 83: ...LCS DX IOM_10 2022...
