TECHNICAL DATA System/3 - Used & Refurbished …

1 ENVIRONMENTAL CONTROL. TECHNICAL DATA Deluxe System/3 . Compressorized Systems 60 Hz 0. O 900 D. IS IFIE. T. CER PANY. COM. Contents 4 Sensitive Electronics and Environmental Control 6 liebert Technology and Energy Efficiency 8 Control Systems 10 Standard Features/. All Systems 12 Standard Features/. Individual Systems 14 Optional Features/. Individual Systems 16 Optional Features/. All Systems 18 Air Cooled Data 20 Water Cooled Data 22 Glycol Cooled Data 24 Glycool Data 26 Dimensional Data Upflow Models 28 Electrical Data Upflow Models 32 Dimensional Data Downflow Models 33 Electrical Data Downflow Models Dimensional/Electrical Data 36 Drycoolers, Condensers, Pump Packages, Temperature/Humidity Recorder 38 Guide Specifications/.

2 Compressorized Systems 45 Installation/. Application Guidelines Essential Environmental Control for Sensitive Electronics 3. Product Model Information Model Number Designation DH 245 A - A A E I. DH = Downflow Nominal A = Air Cooled = 2 Step A = 460/3/60 S = Standard 0 = No Reheat 0 = No DX Capacity in DX Micro-processor Humidifier Thousand BTU/H. VH = Upflow DX W = Water U = 4 Step DX B = 575/3/60 A = Advanced E = Electric I = Infrared Cooled Micro-processor Reheat Humidifier G = Glycol C = 208/3/60 G = Advanced H = Hot Water G = Steam Grid Cooled Graphics Reheat Humidifer Micro-processor DE = Downflow H = DX with D = 230/3/60 G = Hot Gas S = Steam with Econ-o-coil Hot Gas Bypass Reheat Generating Humidifier VE = Upflow with 2 = 380/3/60 T = Steam Econ-o-coil Reheat Dedicated, Precise Environmental Essential for Sensitive Electronics For sensitive electronics, Humidity Control Air Volume environmental control is The electronic equipment Computers and other more than simple cooling.

3 Must be protected from sensitive electronics require Comfort air conditioning both internal condensation greater air volumes than systems are designed for and static electricity ordinary air conditioning the comfort of people, and discharges. Maintaining the can provide. Typical comfort simply cannot provide the correct humidity level in the systems are designed to pro- kind of environment required room is just as important as vide between 300 and 400. by high performance com- maintaining proper tempera- CFM (Cubic Feet per Minute), puter or communication ture. Too high a humidity (500 700 CMH) per ton of equipment. could cause condensation cooling. Computer systems Temperature Control within the electronic equip- require between 500 and 600.

4 Ment and the potential for CFM (850 1020 CMH) per 4 The high density heat load hardware damage. If humidity ton. The high density heat in a computer room or other is too low, static electricity load in a relatively small space similar application is beyond could disrupt operation or requires more changes of air the capacity of ordinary air even shut down the electronic than a less dense comfort . conditioning systems. system. An ordinary building application. While a normal Sensitive electronics are system cannot normally con- office space requires only best maintained in a stable trol the environment within 2 air changes per hour, a environment of 72 F 2 F these boundaries.

5 Room filled with electronic ( C 1 C). As computers equipment requires up to generate large quantities of 30 changes per hour. Without heat in small areas, six to ten proper air volume, hot spots times the heat density of and temperature fluctuations normal office space, the air could develop within the conditioning system must room. Also, greater air vol- have more than just enough umes provide the higher cooling capacity. It must have sensible heat ratios required the precision to react quickly by electronic computer to a drastic change in heat equipment. load and prevent wide temperature fluctuations. Year Round Operation Something a large building Comfort conditioning system cannot do.

6 Systems cannot be relied upon 24 hours per day 365. days per year. They are typically designed to operate ten hours per day, from Spring to Autumn. Many comfort . systems have no provision for winter operation. A precision environmental control system is designed for operation at temperatures of up to 30 F. ( C). Environmental Control System Design Precision Energy Efficiency only better coil coverage, The environmental control Constant demand for precise but reducing fan motor system must be able to sense environmental control makes horsepower requirements. and react to temperature and energy efficiency all the more A microprocessor control humidity fluctuations far too important.

7 A well-designed system ties all the key small for building HVAC sys- environmental control system operational components tems to control. makes the most of the energy together and responds to The Deluxe System/3 is it uses. changes in the room environ- capable of control to within The Deluxe System/3 is ment in the most intelligent . 1 F ( C) and 1% RH. designed for maximum energy and energy conscious way. With liebert microprocessor efficiency. Beginning with UL Listed technology, it is possible to semi-hermetic compressors, maintain predictive control the most reliable and energy Units are UL listed and CSA. over the environment. By efficient compressor available, (NRTL-C) certified.

8 NRTL-C 5. analyzing the rate of change liebert adds an A Frame coil meets both and Cana- in temperature or the moisture that can provide 60% of total dian government safety content in the environment, capacity with only 1 of the 2 requirements, providing fast, the control system anticipates compressors operating. Highly hassle-free inspection and what is going to happen in the efficient fan motors pull air building code approvals. room, not simply respond to through the coil, providing not what has happened. Reliability Because electronic system Features of a well-designed availability is required 24 environmental control system. hours a day, 365 days a year, the environmental control Desirable Feature Building Systems Deluxe System/3 .

9 System must meet the same Precision Typically 5 F (3 C) 1 F ( C)/1% RH. demands. Humidification The Deluxe System/3 is Humidity Control Usually None and Dehumidification designed with the highest Monitoring None Local and Remote quality components selected for their proven reliability. Year-Round Not designed for Yes Microprocessor technology Reliability Winter Operation adds automatic sequencing of 20 95% based on components to even wear and Air Filtration Negligible ASHRAE extend service life. Automatic Factory Tested No Yes cleaning cycles can be pro- grammed to match local water In-the-Room No. Centrally Yes conditions. An alarm system Design Located and self-diagnostics provide rapid troubleshooting and can prevent a problem before it affects the electronic equip- ment room environment.

10 liebert Technology and Energy Efficiency liebert continues its world liebert takes a no com- leadership in precision promise approach to environ- environmental systems mental control system design. by providing maximum All enhancements to energy energy efficiency without efficiency are designed to compromising the accuracy reduce operating time of key and reliability demanded by components and increase the sensitive electronics. Mean Time Between Failure. This is accomplished by taking advantage of alternate sources of cooling without being dependent on their availability, or by reducing 6 compressor work load when heat load in the conditioned space is lower. GLYCOOL. A conventional glycol system Motorized Three-Way plus a second cooling coil to Chilled Water Regulating take advantage of colder out- Valve Econ-o-coil door temperatures to reduce or eliminate compressor operation.