Computer Room Air Conditioner

Technical features High sensible heat ratio Large air volume, large heat exchanger of high efficiency Sensible heat ratio reaches a level higher than 90% Highly efficient refrigerating technology Flexible scroll of high efficiency and reliability Special V-shaped evaporator with large surface area increas heat transfer area Direct-drive air supply fan blows uniformly return air across the surface of evaporator, achieving high sensible heat ratio and little enthalpy difference. DPW technology adjusts energy output of compressor constantly to adapt the changing condition in equipment room and keeps the unit in highly efficient cooling state. Low noise Low-noise centrifugal fan is chosen as indoor blower Low-noise axial fan is chosen as outdoor condenser fan Resonance noise elimination and shock absorption is designed in fan section Maintenance from the obverse side is available Space reserved for maintenance decrease and utilization ratio of equipment room increases Automatic control system the S7-200 system, equipped on the unit, maintains the reliable performance of the unit and keeps its excellent flexibility to adapt to the changing conditions in the equipment room The control panel, equipped with processor, is the key part of the system, which ensure the temperature, humidity, purity and air flow can be controlled accurately. The control system provides the following monitor a. temperature set value, b. humidity set value, c. precisioin set value for temperature and humidity d. current dynamic value of temperature and humidity display e. alarm of temperature and humidity Sequential start-up of load, temperature predict, automatic switchover of the operation sequence of compressors and auto-start-up after de-energized. Control panel ensures that the requirements of the room environment can be controlled accurately and maintains the temperature and humidity in the set range. The preliminary display, supported by Light Emitting Diode(LED), indicates working status of each input and output point for the controller, provides visual of alarms when failure occurs or tolerable values are exceeded. There are three types of alarms when failure occurs or tolerable values are exceeded: buzzer alarm b. alarm content displayed on the screen c. LED flash The audible alarm can be turned off via the mute switch. All alarm contents will be displayed on the screen till failure is cleared. Press the reset button and the screen will return to normal display. Modularized design Scalable configuration is based on user’s actual requirements for an optimum air conditioning system Single modular unit of small size and light weight, is easy to transfer and install. Remote centralized control The remote monitoring equipments can be connected to the S7-200 controller. The RS485 interface on the controller allows other monitor connecting to it. Remote monitoring application is available for control or alarm of one unit or a group of units. The control panel(KTP178) can move to the duty room and facilitate the operator's operation. function of protective alarmhigh/low pressure protection, phase inversion protection, overload protection, humidifier failure protection, filter block alarm, floor water alarm, user fire interlockauto-startup devicethe unit shall be starup automaticaly when the power is interrupted, so even when no operator is on duty, the unit shall not be stopped away power interruption.emergency maintenance functionseparate electric control cabinet ensures general electrical maintenance conducts without stopping the unit.Special-designed dual-layer panel allows regular maintenance to be arried out under unit operation.In case of emergency, emergency operation can insure the unit runs in a stable state.