ENERAL AFETY UIDELINES NOTE Follow all local codes. CAUTION Before installing XDO modules, determine if any building alterations are required to run piping and wiring and verify that the overhead building structure can support the weight of the XDO modules and supporting hardware. CAUTION This system contains hazardous electrical voltage.
Top of Front of XDO Right Side Bottom View of XDO of XDO Figure 2 Model number nomenclature Example: XDO16BK– –0 – – Liebert 16 kW K = 120V-1ph-60Hz Place X-treme nominal T = 220-240V-1ph-60Hz, holder heat capacity 220-240V-1ph- 50Hz...
2. Check the received materials to be sure all required assemblies and parts have been received. If you discover any external damage, report them to the shipping company and your local Liebert representative.
Installation Installation Considerations The XDO module is to be securely mounted to the overhead building structure. It is typically hung 18- 24" (457-610mm) above the heat-dissipating equipment. A suspended ceiling, if one exists, should be at the same level as the top of the XDO. If the suspended ceiling has open grates, it may be the same level as the bottom of the XDO.
Product/System Description Introduction The Liebert XDO is an overhead cooling system designed for installation above heat-dissipating equipment. A fan draws hot air exhausted from the equipment through two cooling coils and dis- charges cool air back down to the equipment (see Figure 3). The system consists of XDO modules, XDP/XDC coolant distribution units, power and signal cabling and interconnecting piping (see Figure 4).
Upon arrival of the unit, and before unpacking, verify that the labeled equipment matches the Bill of Lading. Carefully inspect all items for either visible or concealed damage. Damage should be immedi- ately reported to the carrier and a damage claim filed with a copy sent to Liebert Corporation or to your sales representative.
• If using a fork lift or pallet jack, ensure that the fork tine length is suitable to safely move the packaged unit. • It is recommended by Liebert Corporation that the unit remain in the protective packaging until located at the installation site.
General product information 3.5.2 Export Packaging • Unbend all metal tabs as indicated in Step 1 in Figure 7 below. • Remove outer packaging when ready to install the XDO. • Keep the XDO covered by the unit bag until removal from pallet. Figure 7 Removing export shipping package Step 1...
General product information 3.5.3 Removing the XDO from the Pallet 1. Unfold the unit bag to expose the XDO. 2. Verify the nameplate information found on the XDO against the bill of lading information. If the information does not match the product specified, contact your local sales representative. 3.
General product information Figure 9 General arrangement and overall dimensions LEFT SIDE OF XDO 24-1/8" (613mm) BACK 72-1/4" (1835mm) RIGHT SIDE FRONT OF XDO OF XDO 3" (76mm) 22-3/8" (568mm) Do Not Lift Here 24-1/4" (616mm) Do Not Lift Here FRONT OF XDO : http://splitoff.ru/tehn-doc.html...
Mechanical Considerations ECHANICAL ONSIDERATIONS WARNING Be sure to securely anchor the top ends of the suspension rods. Make sure all nuts are tight. Locating in Ceiling, Spacing The distances between the XDO modules are determined by the heat density to be cooled. Refer to site-specific drawings for exact spacing.
Mechanical Considerations System Connection Configuration If possible, connect the XDO modules to XDPs or XDCs in an interlaced configuration (see Figure 10). Interlacing the connection piping will keep half the XDP/XDC units operating and main- tain even cooling in the conditioned space should one of the XDP or XDC units fail. However, in a system with just one XDP or XDC, connect XDO modules in a non-interlaced configura- tion (see Figure 11).
Attaching Suspension Hardware and Mounting the Unit TTACHING USPENSION ARDWARE AND OUNTING THE The XDO may be suspended from the overhead building structure in either of two ways, using field- supplied threaded suspension rods. • Inserting the rods through internal mounting brackets •...
Attaching Suspension Hardware and Mounting the Unit Figure 13 Fan tray opened for access Front of XDO Internal Mounting Bracket Removable Fan Tray swung open for internal access : http://splitoff.ru/tehn-doc.html...
Attaching Suspension Hardware and Mounting the Unit Installation With Internal Mounting Brackets Before beginning, take precautions to ensure that the equipment below the XDO will not be damaged if the XDO, a piece of hardware or installation tool is dropped. 1.
Attaching Suspension Hardware and Mounting the Unit Installation With External Mounting Brackets An optional external mounting bracket kit may be used to hang XDO units. This kit attaches to the front and rear of the XDO and are used to secure the unit to the overhead building structure. To use the external mounting brackets: 1.
Attaching Suspension Hardware and Mounting the Unit Figure 17 Detailed view of mounting kit attached to front panel Rear of XDO Threaded rods (field-supplied) Front of XDO External Mounting Bracket (part of optional external mounting kit) Nylok Nut Bushing (supplied with internal mounting kit) Washer (supplied with internal mounting kit)
Electrical Connections LECTRICAL ONNECTIONS All power and control wiring and power connections must be in accordance with the National Electri- cal Code (NEC) and local codes. Refer to the unit’s serial tag for electrical requirements. CAUTION Use copper wiring only. Make sure that all connections are tight. The voltage supplied must agree with the voltage specified on the unit serial tag.
Electrical Connections Figure 19 Top and front electrical access points Mounting Hole TOP OF XDO Knockouts for High-Voltage Mounting Wiring Hole FRONT OF XDO Knockouts for Low-Voltage Wiring The low-voltage connection is present only if the XDO is equipped with the optional condensation detection system.
Electrical Connections 1. Route the electrical service conduit through the hole provided in the top or front of the XDO. The electrical connections are on the front of the inside compartment of the XDO on the internal mounting brackets, which, in addition to serving as electrical terminal blocks, also are used to secure internal piping.
Electrical Connections Connecting Low Voltage Wiring—Optional Low voltage connections to the XDP/XDC are required only for units with the optional condensation detection feature. Viewing the XDO from the front or from above, the low voltage terminal block is on the right side of the unit (see Figure 19 for knockout locations; see Figure 21 for low voltage termi- nal block location).
Piping Connections and Piping Access Points IPING ONNECTIONS AND IPING CCESS OINTS Refer to site specific drawings for general locations of the piping connections. These drawings should specify where the piping connects to the XDO (top, front and side). Connection Methods and Points The assembly and connection means used for piping in the XD system are the same as those used in conventional refrigeration systems.
To allow for fluid isolation of each XDO module, install a full port isolation valve (field-supplied) on each branch circuit, see Figure 25 below, site specific documentation, Liebert’s XD System Design and Configuration Document and documentation for other parts of the system.
Piping Connections and Piping Access Points Connecting Pipes to the Top of the XDO To connect the pipes: 1. Vent the nitrogen holding charge as specified in 7.5 - Holding Charge. 2. Remove the caps from the supply and return pipes—the caps are soldered in place and can be removed with a small torch.
The Liebert XD System must be completely installed before it is charged with refrigerant. After installation is complete, refer to the Liebert XDP or Liebert XDC user manual for instructions on charging the XDV/XDO with refrigerant and starting the system. The complete XD system includes all XDO and XDV units, an XDC or XDP unit and any other connected equipment.
IGHT NITS Liebert offers optional lighting units that may be mounted on XDOs to save space and improve illumi- nation in the conditioned space. The XDO modules serve as a mounting platform for the lights, but do not provide power to the lights.
Checklist for Proper Installation HECKLIST FOR ROPER NSTALLATION ___ 1. Threaded rods installed in the overhead building structure. ___ 2. XDO module secured on threaded rod using mounting hardware provided. See 2.3 - Parts Included With XDO and 2.3.1 - Optional Items. ___ 3.
Maintenance 10.0 M AINTENANCE Minimal maintenance is required to keep the XDO operating at optimal levels. The unit should be cleaned and checked for damage and worn parts. Suggested maintenance includes: • Cooling fins—Clean any dust and debris from the cooling fins, taking care not to bend them •...
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