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Related Manuals for Data Aire DAL-06
Summary of Contents for Data Aire DAL-06
- Page 2 NOTICE: Indicates information considered important but may have potential hazard for personal injury or property damage. Data Aire, Inc. reserves the right to make design changes for the purpose of product improvement or to withdraw any design without notice.
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Page 3: Table Of Contents
TABLE OF CONTENTS INTRODUCTION ......................7 Product Information ........................7 Model Identification ........................7 Inspection ............................8 Paperwork ............................. 8 Storage ............................8 Suggested Reference Storage Room Conditions ................. 9 General Storage Considerations ....................9 Registered Trademarks – Copy Rights – References Section ........... 10 INSTALLATION ......................11 Recommended Tools for Installation .................. - Page 4 TABLE OF CONTENTS ELECTRICAL CONNECTIONS..................36 General Electrical Field Wiring Guidelines .................. 37 Electrical Service ......................... 38 Nameplate Ratings ........................38 Grounding ............................ 38 Voltage Tolerance ........................38 Three Phase Voltage Tolerance ..................38 Single-Phase Voltage Tolerance..................39 Heat Exchanger Auxiliary Control Wiring ..................39 Remote Shutdown ........................
- Page 5 MAINTENANCE/INSPECTION CHECKLIST ..............73 Frequently Asked Questions – FAQ ................76 Electrical FAQ Section ........................ 76 Mechanical FAQ Section ......................77 Contact Data Aire ......................80 TABLE OF FIGURES Figure 1 Typical Installation Methods ................16 Figure 2 Typical Installation Details ................16 Figure 3 Typical Discharge Check Valve ...............
- Page 6 TABLE OF CONTENTS LIST OF TABLES Table 1 Line Size Metric Conversion ................20 Table 2 Hot Gas Lines (Inches OD) (Single Circuit Systems) ........21 Table 3 Hot Gas Lines (Inches OD) (Dual Circuit Systems) .......... 21 Table 4 Liquid Lines (Inches OD) (Single Circuit Systems) ........... 21 Table 5 Liquid Lines (Inches OD) (Dual Circuit Systems) ..........
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Page 7: Introduction
The Data Aire CRAC unit provides cooling, reheat, humidification, dehumidification and air filtration. The unit is provided with a Data Aire Mini-dap4 microprocessor controller for precision control. The unit must be operated in a conditioned space within the operating envelope ASHRAE recommends for data centers. -
Page 8: Inspection
Paperwork Each Data Aire CRAC unit ships with a startup sheet that should be completed during installation. Also included in the paperwork is a warranty/information packet that provides important wiring diagrams, specific component literature, warranty registration cards and other valuable paperwork, including a copy of this Installation, Operation, and Maintenance manual. -
Page 9: Suggested Reference Storage Room Conditions
It is the responsibility of the customer to submit a monthly log sheet showing the condition of the unit and noting any discrepancies. A copy of the log sheet should be sent to Data Aire. Failure to perform the long-term storage requirements may void the warranty. -
Page 10: Registered Trademarks - Copy Rights - References Section
Registered Trademarks – Copy Rights – References Section NOTICE: Data Aire Inc. Trademarks Disclaimer: All names, logos, brand, materials and other Registered Trademarks, Trademarks, or Copy Rights seen featured or referred to within documents or our website are explicitly the sole property of their respective and rightful trademark holders or owners. -
Page 11: Installation
INSTALLATION NOTICE: There is no intent on the part of Data Aire, Inc. to define local codes or statutes which may supersede common trade practices. The manufacturer assumes no responsibility for their interpretation. Consult local building codes and National Electrical Code (NEC) for special installation requirements. -
Page 12: Recommended Tools For Installation
If possible, transport the Data Aire unit with a forklift or pallet 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. -
Page 13: Room Considerations
unit. A minimum clearance equal to the width of the unit is suggested on one side of the unit for removing the coil or fan assembly. Add dimension of pipe chase, ducts, control and electrical panels, etc. to minimum clearances. Allow additional clearance as required by local and national codes. -
Page 14: Equipment Handling And Rigging
Equipment Handling and Rigging WARNING: Only properly trained personnel wearing appropriate safety head gear, gloves, shoes, and glasses should attempt to move the unit, lift it, remove packaging or prepare the unit for installation. Moving Unit into Final Location Move the unit in its upright position to the installation site using a forklift or pallet jack. It is recommended that the unit be protected from damage to the decorative doors or panels during any storage or moving. -
Page 15: Horizontal Airflow Units
NOTE: There are many available unit configurations for the Large Ceiling Systems, therefore; be sure to identify the unit type and style before installing. For instance there may be split condenser/condensing unit sections requiring separate or shared power. Note to Installing Contractor: Condensation formation and frequent humidifier flushing (when humidifier is installed) are normal functions of this equipment. -
Page 16: Figure 1 Typical Installation Methods
Figure 1 Typical Installation Methods NOTES: The unit must be level when installation is complete. Add an additional 4-1/2” for an Energy Saver or Auxiliary Chilled Water coil option. Figure 2 Typical Installation Details... -
Page 17: Indoor Condensers And Condensing Units
Indoor Condensers and Condensing Units Although most split air-cooled systems have outdoor condensers or condensing units, indoor condensers and condensing units are occasionally used. These 29 1/2” (750 mm) tall sections are to be mounted in the same manner as the evaporator sections using four (4) threaded rods. Air-cooled condensers or condensing units have factory provided duct collars on the supply and return air openings as appropriate. -
Page 18: Split Air-Cooled Unit Piping
The ultimate responsibility for line size selection is that of the installing contractor or design engineer. Data Aire does not assume this responsibility. The chart covers distances up to 200 equivalent feet (61 m). For installations beyond this distance, consult ASHRAE or similar references. -
Page 19: Figure 3 Typical Discharge Check Valve
Data Aire recommends a silver/phosphorus/copper alloy with 5 to 15% silver be used to braze the refrigerant line sets to the indoor and outdoor units. Nitrogen needs to be flowing through the lines to... -
Page 20: Liquid Lines
eliminate carbon deposit buildup on the inside of the joints. Carbon could contaminate the refrigerant and restrict the metering device. Piping must be supported within 18” (457 mm) of the inlet and outlet connections external to the unit. Internal to the unit, the inlet connection is located on the top header of all units. The discharge outlet is located at the bottom of the header. -
Page 21: Hot Gas Lines
Hot Gas Lines Table 2 Hot Gas Lines (Inches OD) (Single Circuit Systems) Equivalent Feet (Meters) Tons 50 (15.2) 100 (30.5) 150 (45.7) 200 (61.0) Unit Tonnage Circuit Vertical Vertical Vertical Vertical Horizontal & Horizontal & Horizontal & Horizontal & Vertical Down Vertical Down Vertical Down... -
Page 22: Suction Lines
3. If hot gas line refrigerant flow is downward, use “Horizontal & Vertical Down”. Connection Sizes, Air Cooled Units Table 8 Connection Sizes, Air Cooled Units (Inches OD) Model Number Circuiting Hot Gas Line Liquid Line Suction Line DAL-06 Single Circuit 1-1/8 DAL-08 Single Circuit 1-3/8 DAL-10 Single Circuit 1-3/8... -
Page 23: Connection Sizes, Water/Glycol Cooled Units
In some cases these sizes will vary significantly. Connection Sizes, Water/Glycol Cooled Units Table 9 Connection Sizes, Water/Glycol Cooled Units (Inches OD) Model Number Condenser Water In (Supply) Condenser Water Out (Return) DAL-06 1-5/8 1-5/8 DAL-08 1-5/8 1-5/8 DAL-10... -
Page 24: Field Piping, Remote Condenser/Condensing Unit Above Evaporator
Field Piping, Remote Condenser/Condensing Unit Above Evaporator NOTES: 1. This is the recommended piping. All piping to be per local and/or state code. 2. Condenser to be no more than 60 feet (18.3 meters) above evaporator. 3. For units built after April 2017, the check valves are included internally in the evaporator section. -
Page 25: Field Piping, Remote Condenser/ Condensing Unit Below Evaporator
Field Piping, Remote Condenser/ Condensing Unit Below Evaporator NOTES: 1. This is the recommended piping. 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 every 10 feet (3.1 M) of line length. -
Page 26: Connection Sizes, Fluid Coolers (Dry Coolers)
Connection Sizes, Fluid Coolers (Dry Coolers) The information regarding Fluid Cooler (or often referred to as a “dry cooler”) connection sizes can be found in the individual Fluid Cooler User Manuals which should be referred to for more complete details. Auxiliary Chilled Water/Energy Saver Coil In colder climates, the evaporator will often be equipped with an additional free cooling coil to take advantage of the colder ambient temperatures. -
Page 27: Condensate Drain System
Condensate Drain System Every indoor unit has a 3/4” (19 mm) copper stub provided for condensate removal. A union (field provided) is recommended at the field connection which will permit easy disconnection from the unit for cleaning. A trap should be built into the drain line to prevent air from backing up into the unit. Drain lines should be pitched downward not less than 1/4”... -
Page 28: Condensate Trap
WARNING: The condensate drain MUST be connected to an external drain line (provided by others) before unit start up. NOTICE: Clogged or leaking drain lines can cause damage to the equipment and building. Drain lines must be inspected regularly and maintenance must be performed to ensure that drain lines are clear and condensation runs freely through the drain system. -
Page 29: Figure 4 Recommended Condensate Trap Dimensions
Figure 4 Recommended Condensate Trap Dimensions Notes: 1. This trap is capable of handling static pressures equal to 4” H2O which is the maximum static available for ceiling units. If the unit fans are standard, there is no need to consider different dimensions but if higher total static pressure is expected, more vertical drop is required. -
Page 30: Condensate Pump Side Mounting Pump (Optional)Humidifier Piping
Condensate Pump Side Mounting Pump (Optional)Humidifier Piping Figure 5 Typical Side Pump Mounting NOTES: 1. Condensate pump can be mounted in other places, for example units with a vertical 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”... -
Page 31: Humidifier
Humidifier Steam Generator Humidifier The optional humidifier available is a steam generator humidifier type with disposable cylinder. The humidifier makeup water should be brought to the humidifier through the field connection opening using 1/4” (6.4 mm) copper tubing. A compression fitting is provided at the humidifier. Humidifier Piping The optional humidifier offered on Large Ceiling System units is a steam generator type with a disposable cylinder. -
Page 32: Water/Glycol Cooled Unit Piping
Water/glycol cooled units are shipped with plate/fin heat exchangers as standard equipment. A strainer (Data Aire provided) is shipped loose and is to be field installed in the supply line with shutoff valves (field provided) before and after the strainer. The strainers and water/glycol piping must be cleaned on a periodic basis. -
Page 33: Figure 6 Typical Water/Glycol System
The water/glycol system may include a centrifugal pump (or pumps, for redundancy) available from Data Aire as an option, along with field provided union(s), shutoff valves, check valve(s) and a flow switch (Data Aire option). Pumps must be primed before operating per the pump manufacturer’s guidelines. -
Page 34: Leak Testing
Leak Testing WARNING: No installation is complete until the entire system has been thoroughly checked for leaks. This includes checking the refrigerant tubing, flare fittings, pressure controls, Schrader fittings and compressor Rotolock service valves. Check both the field and factory connections. In addition to the refrigeration system, check all condenser water lines, humidifier water makeup lines, condensate lines, condensate pumps, chilled water lines, centrifugal pumps and fluid cooler (where applicable). -
Page 35: Commissioning Information
Commissioning Information In general, with respect to Data Aire products, the commissioning process is the integration of Data Aire units with your project design system. Data Aire can help provide the installation and maintenance support, but the commissioning is normally done as specified by the owner or others unless otherwise specified. -
Page 36: Electrical Connections
WARNING: Data Aire equipment must be connected by a licensed 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. -
Page 37: General Electrical Field Wiring Guidelines
Remove all packing and shipping materials from the unit before installation. WARNING: The Data Aire dap4 controller does not isolate power from the unit, even in the Unit OFF mode. Some internal components require and receive power even during the Unit OFF mode of dap controller. -
Page 38: Electrical Service
Air Conditioning, and Refrigeration (HACR) type circuit breaker. Other protection devices are not allowed based upon the product UL listing. The facility main distribution panel which provides electrical service to the Data Aire equipment must be provided with a manual fused disconnect switch or HACR type circuit breaker per local and national electrical codes. -
Page 39: Single-Phase Voltage Tolerance
Because of the wide variety of indoor evaporators and remote heat exchangers offer by Data Aire, the installing contractor must refer to the schematic which is provided inside the electrical control box of each unit, for the required auxiliary control wiring interconnection terminal points. -
Page 40: Remote Shutdown
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 control functions and display normal functions and service diagnostics with six keys (buttons) for easy programming. -
Page 41: Remote Sensors
Class 1 wiring. These programmable output contacts will close on a failure and remain closed until the alarm is no longer present. The terminal designations for these alarm output contact pairs are: Table 14 Remote Alarm Contacts Terminals Function Remote Alarm (Common) Remote Alarm 1 (Normally Open) Remote Alarm 1 (Normally Closed) Remote Sensors... -
Page 42: Manual Override Switch Board
Manual Override Switch Board NOTICE: The Manual Override Board with switches was previously available on units before April 2021. Units built after April 2021 do not include this board. For testing and during startup each gForce unit is provided with manual override slide switches. There are seven (7) slide switches. -
Page 43: Wiring Diagrams
Wiring Diagrams Every Data Aire evaporator, condenser, condensing unit or fluid cooler comes with a wiring diagram. These diagrams are ladder type schematics intended for service personnel. The intent is to allow the technician to understand the wiring details associated with the electrical components and how they interface with the controls as well as peripheral equipment (including secondary heat exchangers). -
Page 44: Charging
• High pressure recovery tank suitable for R-410A pressure (Ref: DOT 4BA400 or ABW400) Triple Evacuation and Dehydration Procedure Data Aire highly recommends a triple evacuation to be carried out on all Data Aire units to ensure the highest quality moisture removal. Moisture prevents the proper operation of both the compressor and the refrigeration system. -
Page 45: Tools Needed
NOTICE: Do not turn OFF vacuum pump when connected to an evacuated system before closing shutoff valve. WARNING: Do not apply power to the compressor when in a vacuum. Tools Needed • Refrigerant manifold gauge set NOTICE: This manifold gauge set should not be used for the vacuum procedure. -
Page 46: Second Stage Evacuation
5. Isolate and hold the nitrogen charge for at least 20 minutes. 6. Verify that there are no nitrogen leaks. 7. Carefully release the nitrogen charge. Watching the gauge until it reads 1 PSIG (7 kPa). Second Stage Evacuation 1. Move the vacuum hoses back to the vacuum pump and restart the pump. 2. -
Page 47: Final Evacuation Stage
Final Evacuation Stage 1. Move the vacuum hoses back to the vacuum pump and restart the pump. 2. Open the Schrader core shutoff valve and evacuate the refrigerant system from both sides of the system to 500 micron or less. 3. -
Page 48: Voltage Phase Check
refrigerant. A liquid charging adapter prevents liquid refrigerant from entering the compressor. • In some cases, the assistance of a refrigerant recovery machine may be necessary to add the initial charge. • Care must be taken to prevent from over charging the system and from liquid entering the compressor and diluting the oil. -
Page 49: Fixed Speed Scroll Compressor Phase Check
Fixed Speed Scroll Compressor Phase Check Since the fixed speed, scroll compressors are phase dependent, the easiest way to check proper phasing is to check the rotation of the fixed speed scroll compressor on the evaporator section by momentarily energizing the COOL 1 (circuit 1 compressor) under the dap4 Menu I – Manual Control (Service Level). -
Page 50: Component Functional Test
Table 16 Liquid Line Multiplier for R-410A at Various Line Lengths Equivalent Feet (Meters) Liquid Line Liquid Line Nominal Size Size OD Multiplier (inches) (inches) (15.2) (30.5) (45.7) (61.0) 0.067 3.35 6.71 10.06 13.41 0.108 5.38 10.76 16.13 21.51 0.154 7.70 15.40 23.10... -
Page 51: Refrigerant Handling
This applies to all units with either shell and tube condensers or high-pressure relief valve options. Air Cooled Split-System Charging Air-cooled condensers provided with Data Aire equipment have integral fan speed controls. The fan speed control is programmed at the factory to start the fan at a specific head pressure and increase speed (i.e., airflow) when enough head pressure is developed, the fan will run at full speed. -
Page 52: Table 18 Large Ceiling System Units R-410A
Table 18 Large Ceiling System Units R-410A Weight of Refrigerant in Evaporator and Condenser Single Circuit Dual Circuit Evaporator Condenser Model Starting Charge Starting Charge Model (lbs.) (lbs.) DALA-06XX GHRC-025XX or DARC-07XX 13.9 12.9 GHRC-039XX or DARC-11XX (Option) 12.6 GHRC-053XX or DARC-15XX (Option) 16.6 15.7 GHRC-074XX or DARC-21XX (Option) -
Page 53: Table 19 Large Ceiling System Units R-407C
Table 19 Large Ceiling System Units R-407C Weight of Refrigerant in Evaporator and Condenser Single Circuit Dual Circuit Evaporator Condenser Model Starting Charge Starting Charge Model (lbs.) (lbs.) DALA-06XX GHRC-025XX or DARC-07XX 14.3 GHRC-039XX or DARC-11XX 13.4 GHRC-039XX or DARC-11XX (Option) 13.9 13.0 GHRC-053XX or DARC-15XX (Option) -
Page 54: Charging The Fixed Speed Compressor
7. Close the valve on the refrigerant manifold gauge set. WARNING: If the system is charged from a vacuum, the preheating of the compressor is not necessary. But if starting a compressor that has not been charged from a vacuum, the crankcase heater must be energized for a minimum of 12 hours to reduce the possibility of liquid slugging on startup. -
Page 55: Additional Oil
glass are not unusual at this point. It is likely that more refrigerant will be required to complete the charging procedure. Finish charging circuit 1 by slowly opening the valve on the refrigerant manifold set to meter liquid refrigerant into the low side of the system. Use a liquid charging adapter to prevent liquid refrigerant from entering the compressor. -
Page 56: Flooded System Charging (Systems With Low Ambient Receiver Package)
Top-up the oil while the compressor is idle. Use any accessible connector on the compressor suction line and a suitable pump. ALWAYS use clean original Danfoss POE oil 160SZ or equivalent from new cans. After charging, verifying subcooling and oil level. Close the valve on the refrigerant manifold gauge set and close the service valve on the refrigerant tank and disconnect the refrigerant manifold gauge set. -
Page 57: Refrigerant Receiver
Receiver storage capacities are based on the liquid occupying no more than 90% of the internal volume when the temperature of the refrigerant is 90°F (32°C) per ASHRAE Standard 15-78. Includes within Data Aire’ Product Selector Guide, the low ambient receiver package has already sized and selected for each Ultra model size. -
Page 58: Safety Relief Devices
Safety Relief Devices Data Aire’s low ambient receiver(s) include a suitable fusible plug safety relief device installed on the receiver housing. The fusible plug is a onetime discharge device and must be replaced in the event of a receiver over temperature condition. The fusible plug allows refrigerant to release at a controlled rate and relieves an over temperature/pressure condition in the receiver. -
Page 59: Figure 10 Typical Low Ambient Receiver Package
Figure 10 Typical Low Ambient Receiver Package NOTES: 1. Install the Low Ambient Control (LAC) valve remote sensing bulb on a smooth flat part of the liquid line for optimal surface contact and insulate the bulb after mounting. 2. Keep the LAC away from the hot gas inlet. 3. -
Page 60: Charge Fixed Speed Compressor
more than 90% of the internal volume when the temperature of the refrigerant is 90°F (32°C) per ASHRAE Standard 15-94. Use two (2) lbs. per nominal ton and using a “liquid charging adapter” add the calculated system charge at the condenser through the liquid line and discharge line with liquid refrigerant. A “liquid charging adapter”... -
Page 61: Table 23 Packaged Units Without Receivers
should be done by referring to the unit’s electrical nameplate. The factory charge is indicated on the nameplate. Although this figure represents the initial factory charge, it is still necessary to measure and note proper unit operation including superheat, head and suction pressure. Some adjustment of charge may be required. -
Page 62: Important Refrigeration Components
Important Refrigeration Components Thermal Expansion Valve The refrigerant circuit has an adjustable Thermal Expansion Valve (TXV). The TXV is factory adjusted to their normal rating. Any field adjustment should be to “fine tune” a system that has stabilized and already has acceptable operating parameters. Adjusting a TXV to produce large swings in superheat is not recommended. -
Page 63: Liquid Line Solenoid Valve (Optional)
Liquid Line Solenoid Valve (Optional) The primary purpose of a solenoid valve in a refrigerant liquid line is to helps prevent refrigerant migration (i.e., flow into the evaporator) 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 the system is not running and when the solenoid valve is not energized. -
Page 64: Glycol Systems
Brazed-Plate Condensers Data Aire water cooled units use brazed-plate condensers as a standard. Brazed-plate condensers are constructed of plates brazed together to form an assembly of separate channels. Refrigerant is confined to the space between the welded plates and is exposed to gaskets only at the ports. Such condensers have a higher range of capacity. -
Page 65: Water Treatment
NOTICE: Data Aire does not have experience of in-depth knowledge in the field of water treatment and therefore only provides the following information as a general reference. To properly maintain your water system, please consult a water treatment expert. -
Page 66: Type L Copper Tubing Internal Volume
occurred, chemical cleaning will be necessary. This should be performed using a weak acid cleaning liquid pumped through the heat exchanger in reverse flow direction at approximately twice the normal flow rate. Remember that the cleaning acid should be circulated in reverse flow for usually 24 hours. At the completion of the cleaning process, it is important that the condenser be flushed with clean water for at least 30 minutes. -
Page 67: Freezing Point Of Aqueous Solutions
Freezing Point of Aqueous Solutions Table 29 Freezing Point of Aqueous Solutions Ethylene Glycol, Freezing Point, Propylene Glycol, Freezing Point % by Volume Degrees F (C) % by Volume Degree F (C) 32 (0) 32 (0) 24 (-4.4) 27 (-2.8) 15 (-9.4) 18 (-7.8) 4 (-15.6) -
Page 68: Controls
CONTROLS Mini-dap4 Microprocessor Control Controller The standard controller on all LCS equipment is the Mini-dap4 microprocessor controller. The controller includes unit controller and a remote display. Normal functions and service diagnostics is accessed by the remote graphic touch display (dap4Touch). The controller allows recall and display of the high and low temperature for the last 24 hours, high and low humidity for the last 24 hours, current percent of capacity and average percent of capacity for the last hour of operation for compressor, reheat, humidification, dehumidification, component runtimes (if applicable) for fan motor(s), reheat,... -
Page 69: Regular Maintenance Items
REGULAR MAINTENANCE ITEMS Air Filters The air filter section is an integral part of the environmental control system, designed within the unit for easy front accessibility. An initial set of filters are factory installed in the unit. The filters are 4-inch (100mm) deep, disposable, pleated design, extended surface, nonwoven, reinforced cotton fabric;... -
Page 70: Fuses
Fuses Fuses may occasionally require changing especially with installations where the voltage is not consistent. Drops in voltage can create brief periods of high amp draw, causing fuses to blow. Always replace fuses with those of the equivalent rating with regard to 1) amperage, 2) voltage, and 3) speed. For instance, motors are inductive loads which require time delay fuses. -
Page 71: Ec Plenum (Plug) Fans
EC Plenum (Plug) Fans NOTICE: Electronically Commutated (EC) motors with backward curved plenum (plug) fans are a special optional on some LCS units. Maintenance is not required on electronically commutated (EC) motor/plenum fan modules. The motors are sealed, have maintenance free ball bearings and permanent lubrication. The only acceptable service is replacement. -
Page 72: Ec Motor Testing
EC motors have an under-voltage protection. If the power supply voltage falls below 150 VAC/3Ø (for 230-volt motors) 290 VAC/3Ø (for 460 motors) for a minimum of five (5) seconds, the motor will automatically switch off and an alarm condition (NO AIRFLOW) will be energized and displayed. If the power supply voltage returns to the correct values, the motor will automatically restart. -
Page 73: Maintenance/Inspection Checklist
MAINTENANCE/INSPECTION CHECKLIST MAINTENANCE/INSPECTION CHECKLIST (NOTE: Maintenance/inspection items are monthly unless otherwise specified.) Evaporator Model No.: Evaporator Serial No.: Technician: Date: Temperature/Humidity set at: °F % RH Air Filters: Air Distribution Section ☐ Inspect and replace (if required) ☐ Check restriction of grilles and discharge louvers ☐... - Page 74 MAINTENANCE/INSPECTION CHECKLIST (NOTE: Maintenance/inspection items are monthly unless otherwise specified.) Humidifier (Steam Generator) is equipped: ☐ Inspect drain valve/trap/drain line ☐ Check for leaks (makeup water/hoses) ☐ Check humidifier canister (replace if needed) ☐ Check and clean fill strainer ☐ Check operation Record humidifier amp draw A L2 A L3...
- Page 75 MAINTENANCE/INSPECTION CHECKLIST (NOTE: Maintenance/inspection items are monthly unless otherwise specified.) Air Cooled Condenser, Condensing Unit, Fluid Cooler (if applicable) ☐ Inspect coil/clean if required or Fluid Cooler (if applicable) ☐ Inspect coil/clean if required ☐ Inspect motor/motor mounts ☐ Inspect motor/motor mounts ☐...
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Page 76: Frequently Asked Questions - Faq
Question 5: Will all units operate at 50 or 60 hertz power? Answer: No. This depends on the model and options selected. Consult with Data Aire for details. Question 6: Does the unit require an electrical ground? Answer: Yes. All units require a true earth ground. -
Page 77: Mechanical Faq Section
Question 2: How much clearance around my Data Aire unit is required for servicing? Answer: Data Aire recommends a minimum of 36” on two sides of ceiling mounted units. Units with special EC motor and plug fans require 40” on the front and two sides. - Page 78 The amount of steam generated depends on the model of humidifier you have in your Data Aire unit. To determine the model number, locate the product description label on the Nortec humidifier. Match the model number to the table below to determine the amount of steam generated.
- Page 79 2. Poor air distribution 3. Poor refrigerant distribution 4. Improper compressor-evaporator balance 5. Evaporator oil logged 6. Flow from one TXV affecting another’s bulb NOTE: Data Aire has ensured that TXVs are sized properly as the unit ships from the factory.
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Page 80: Contact Data Aire
Telephone: 714-921-6000 or 800-347-2473 E-mail: Service@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 Number: Evaporator Model Number: Evaporator Serial Number: Condenser Model Number: Condenser Serial Number: Date Installed: Installing Contractor:... - Page 81 Condensate pump ............27, 29, 30, 41 Installing/Mounting ................15 Condensate Pump ............8, 27, 41, 76 Condensing unit ................39 Contact Data Aire ..............35, 80 Controls ................... 73 Liquid line .................. 20, 79 Corrosion ..................66 Locating .................... 14 Loose items ..................
- Page 82 Piping ......17, 18, 20, 24, 25, 26, 30, 31, 32, 44, 58, 74, 78 Storage ................... 8, 9 Polyol Ester oil (POE) oil............... 44 Subcooling .................. 55, 61 Superheat ................55, 61, 79 Receiver ................ 57, 58, 59, 60 Recommended gas velocity ............
- Page 83 LCS DX IOM_10-2022...