Huawei FusionCol8000-E240 User Manual
Huawei FusionCol8000-E240 User Manual

Huawei FusionCol8000-E240 User Manual

Modular indirect evaporative cooling system
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FusionCol8000-E240 Modular Indirect Evaporative
Cooling System
User Manual
Issue
01
Date
2021-01-30
HUAWEI TECHNOLOGIES CO., LTD.

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Summary of Contents for Huawei FusionCol8000-E240

  • Page 1 FusionCol8000-E240 Modular Indirect Evaporative Cooling System User Manual Issue Date 2021-01-30 HUAWEI TECHNOLOGIES CO., LTD.
  • Page 2 Notice The purchased products, services and features are stipulated by the contract made between Huawei and the customer. All or part of the products, services and features described in this document may not be within the purchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information, and recommendations in this document are provided "AS IS"...
  • Page 3: About This Document

    Indicates a hazard with a medium level of risk which, if not avoided, could result in death or serious injury. Indicates a hazard with a low level of risk which, if not avoided, could result in minor or moderate injury. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 4 Change History Changes between document issues are cumulative. The latest document issue contains all updates made in previous issues. Issue 01 (2021-01-30) This issue is used for first office application (FOA). Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 5: Table Of Contents

    3.2.2 Water Refill Pipe and Drainpipe........................... 32 3.2.3 Pipe Supports..................................33 3.2.4 Cable...................................... 33 3.3 Installing a FusionCol8000-E............................35 3.3.1 Unpacking and Checking..............................35 3.3.2 Securing a Smart Cooling Product..........................35 Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 6 4.4.3 (Optional) Installing Teamwork and Monitoring Communications Cables..........79 4.4.3.1 Preparing a Network Cable............................79 4.4.3.2 CAN Teamwork + RS485 Monitoring........................80 4.4.3.3 CAN Teamwork + FE Monitoring..........................81 4.4.3.4 FE Teamwork + RS485 Monitoring.......................... 82 Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 7 8.4.5 Replacing a Differential Pressure Switch (Building Scenario)................. 145 8.4.6 Replacing a Differential Pressure Switch (FDC Scenario)................. 146 8.4.7 Replacing a T/H Sensor (Building Scenario)......................148 8.4.8 Replacing a T/H Sensor (FDC Scenario)......................... 150 Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 8 9.1.14 How Do I Set Alarm Parameters?........................... 191 9.1.15 How Do I Commission a Component?........................192 9.1.16 How Do I Query the Setting of a Parameter Before Change?..............193 9.1.17 How Do I Export Data?...............................193 Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 9 F Physical Ports (FDC Scenario)..................236 F.1 Physical Ports of Air Vents............................... 236 F.2 Physical Ports of Pipes............................... 239 F.3 Physical Ports of Cables..............................241 G Acronyms and Abbreviations................... 244 Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd. viii...
  • Page 10: Safety Information

    The "NOTICE", "CAUTION", "WARNING", and "DANGER" statements in this document do not cover all the safety instructions. They are only supplements to the safety instructions. Huawei will not be liable for any consequence caused by the violation of general safety requirements or design, production, and usage safety standards.
  • Page 11 ● Keep irrelevant people away from the equipment. Only operators are allowed to access the equipment. ● Use insulated tools or tools with insulated handles, as shown in the following figure. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 12 Do not change the structure or installation sequence of equipment without permission. ● Do not touch a running fan with your fingers, components, screws, tools, or boards before the fan is powered off or stops running. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 13: Personnel Requirements

    Do not power on the equipment before it is installed or confirmed by professionals. 1.2 Personnel Requirements ● Personnel who plan to install or maintain Huawei equipment must receive thorough training, understand all necessary safety precautions, and be able to correctly perform all operations. ●...
  • Page 14 0°C. Handle cables with caution, especially at a low temperature. – Cables stored at subzero temperatures must be stored at room temperature for at least 24 hours before they are laid out. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 15: Installation Environment Requirements

    Install the equipment in an area far away from liquids. Do not install it under areas prone to condensation, such as under water pipes and air exhaust vents, or areas prone to water leakage, such as air conditioner vents, ventilation Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 16 Any violations must be promptly pointed out by the site manager or safety supervisor and the involved personnel should be prompted for correction. Personnel who fail to stop violations will be forbidden from working. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 17: Mechanical Safety

    Ensure that the wider end of the ladder is at the bottom, or protective measures have been taken at the bottom to prevent the ladder from sliding. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 18 D ANGER When removing a heavy or unstable component from a cabinet, be aware of unstable or heavy objects on the cabinet. ● Be cautious to avoid injury when moving heavy objects. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 19: Cooling System Safety

    ● When maintaining or replacing components, pay attention to high-pressure components (such as the compressor and refrigerant pipe) to prevent the refrigerant system from being cracked or exploded due to misoperations. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 20: Others

    The dealer can help you recycle devices in a safe and environment-friendly way. 1.7 Others Exercise caution when shutting down the smart cooling product. Doing so may cause equipment and room overheating, which will damage the equipment. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 21: Product Description

    8000: modular indirect evaporative cooling system Cooling mode E: indirect evaporative cooling Model code 240: model code 240 Air supply mode H: horizontal flow Power supply 4: 380–415 V, three-phase, 50/60 Hz 2.2 Product Composition Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 22: Product Introduction (Building Scenario)

    (3) Maintenance door (4) Maintenance door vent (end) vent (end) (5) Electric control box (6) Outdoor air (7) Indoor air return (8) Outdoor air intake exhaust vent (end) vent (top) vent (side) Figure 2-3 Components (interior) Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 23 The condenser adopts the flow design with a low wind resistance. Exhaust ● A Huawei-developed high-speed fan is used, which features large air volume, high static pressure, high reliability, and a long service life. ● The fan is separated from the drive. The fan efficiency is improved by more than 8% compared with a common EC fan.
  • Page 24 ● The variable-frequency drive power supply mode is used to implement soft startup of the water pump, improving the pump reliability. ● A Huawei-developed high-speed fan is used, which supply features large air volume, high static pressure, high reliability, and a long service life.
  • Page 25: Product Introduction (Fdc Scenario)

    (8) Outdoor air exhaust vent (end) exhaust vent (top) (9) Indoor air return vent (side) NO TE The outdoor air exhaust vent is selected based on the actual situation. Figure 2-5 Components (interior) Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 26 The condenser adopts the flow design with a low wind resistance. Exhaust ● A Huawei-developed high-speed fan is used, which features large air volume, high static pressure, high reliability, and a long service life. ● The fan is separated from the drive. The fan efficiency is improved by more than 8% compared with a common EC fan.
  • Page 27 Supply fan ● A Huawei-developed high-speed fan is used, which features large air volume, high static pressure, high reliability, and a long service life. ● The fan is separated from the drive. The fan efficiency is improved by more than 8% compared with a common EC fan.
  • Page 28: Controller

    Constant There is an unacknowledged critical alarm. buzzing Note: In the preceding conditions, the indicator blinks at a frequency of 1 Hz, that is, on for 0.5s and off for 0.5s. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 29 Remote Users can monitor and manage one or more devices using the management remote management function provided by Huawei. Storage ● A large number of fault alarm records can be stored. Alarms can be managed by severity. A maximum of 500 historical alarms can be stored for each severity.
  • Page 30 The display panel intelligently identifies abnormal parameter settings (incorrect commands) and rejects them automatically. ● If the indoor temperature fluctuates beyond the normal range, an audible and visible alarm signal is produced automatically. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 31: Main Control Module

    CAN_IN and CAN_OUT ports: connect CAN teamwork and RS485 monitoring cascading communications cables. ● RS485/12V port: connects a temperature and humidity (T/H) sensor. ● COM/FE port: connects a monitoring communications cable. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 32 Service Expert app. Obtain the initial startup password during deployment. View or obtain running information about the smart cooling product during inspection. Only Huawei service engineers or authorized service engineers are allowed to use the WiFi module. To ensure security, remove the WiFi module immediately after use.
  • Page 33: Operating Environment Specifications

    3000 3500 4000 Air volume 0.887 0.835 0.785 0.737 0.692 0.649 0.608 coefficient Cooling 0.887 0.835 0.785 0.737 0.692 0.649 0.608 capacity coefficient Note: The sensible heat ratio is always 100%. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 34 (RCCB) that is insensitive to single-phase DC pulsation and transient impulse current. Note: If the requirements are not met, contact Huawei technical support for an optimized solution. Issue 01 (2021-01-30)
  • Page 35: Technical Specifications

    150 Pa and 100 Pa respectively. If the indoor return air temperature is lower than 38°C, the cooling capacity of the equipment is derated. Table 2-6 Compressor cooling specifications Item Specifications Compressor type Variable-frequency scroll compressor Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 36: Working Modes

    Status Dry mode (fan) Wet mode (fan + spraying) Dry mode + Auxiliary cooling mode (fan + compressor cooling) Wet mode + Auxiliary cooling mode (fan + spraying + compressor cooling) Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 37: System Installation (Building Scenario)

    (AHU). You need to strictly follow the heating, ventilating, and air conditioning (HVAC) construction requirements. To ensure proper operation of the unit, protect it against dust, dirt, corrosive gas, and high humidity. Do not use the indoor unit in open air. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 38: Maintenance Space

    (1) Wall (2) Indoor air supply vent (3) Electric control box (end) Figure 3-2 Maintenance space (combined units, unit: mm) (1) Wall (2) Indoor air supply vent (3) Electric control box (end) Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 39: Storage

    Do not stack whole FusionCol8000-E systems together. ● Check the FusionCol8000-E periodically. 3.2 Materials Materials to be prepared include materials delivered by Huawei, to be purchased by the customer, and to be prepared onsite. Table 3-1 Material description Item Description...
  • Page 40 Marker Insulation tape Hammer drill Diesel forklift Manual forklift Lifting rope Rubber hose Alcohol Thermal Water pipe thread Hot melt device Clamp meter insulation foam (for rigid pipes) sealant with glue Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 41: Water Refill Pipe And Drainpipe

    Water tank G 1-1/2 inch DN50 Rigid pipe (made of g survey. drainpipe external PP-R, C-PVC, or thread other materials) connector Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 42: Pipe Supports

    If the cable used onsite does not meet the recommended specifications, the cable may fail to be routed through the waterproof connector or the waterproof connector may fail to be secured. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 43 Bolt Torque Remarks Method Specificatio Primary input Crimped DT 20N·m Standard terminals configuratio n, delivered with the product. Backup input Crimped DT 20N·m Standard terminals configuratio n, delivered with the product. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 44: Installing A Fusioncol8000-E

    Ensure that the crane is properly located and avoid long- distance hoisting. Ensure that the device is stable and the diagonal gradient of the device is less than or equal to 5 degrees. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 45 Materials: device to be hoisted, expansion bolt, angle steel bracket Procedure Step 1 Prepare concrete platforms. Figure 3-4 Concrete platforms fora single unit (unit: mm) Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 46 NO TICE When hoisting a device, ensure that the four corner fittings of the device are aligned with the marked mounting positions for corner fittings on the concrete platforms. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 47 Step 6 Install the equipotential ground cable or ground lug. ● Ground lug (engineering procurement): Use hot-dip zinc-coated flat steel sheet with a cross-sectional area of 40 mm x 4 mm. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 48 Figure 3-8 Installing the ground cable or ground lug (1) Ground cable (2) Ground lug ----End Follow-up Procedure After the device is hoisted and installed, verify the installation to ensure normal use of products and smooth subsequent installation. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 49: Checking The Refrigerant

    Figure 3-9 is missing. If any bonnet is missing, contact Huawei technical support. If no bonnet is missing, remove the valve bonnets, and press the valve plugs using the valve bonnets in turn. If gas flows out, the system is normal. If no gas flows out, contact Huawei technical support.
  • Page 50: Installing An Air Duct

    ● The joint between the air duct and the unit should be sealed to prevent air leakage. Generally, the sealing cotton is pressed inside the flange of the air duct or sealant is applied to the flange after installation. ----End Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 51: Installing Water Pipes

    ● When installing the water seal, keep it horizontal and allow a maximum downward inclination of 5°. ● When installing the water seal, strictly follow the installation diagram (as shown in Figure 3-11) to avoid reverse connection of the water seal. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 52 Wrap the pipes starting from the water refill and drainage ports to the frozen soil layer with an electric heating belt. Bury the remaining pipes underground (the temperature at a specific depth underground is always above 0°C). Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 53 ● Wrap the electric heating belt and then wrap the thermal insulation foam. Ensure that the thermal insulation foam covers the temperature control switch and temperature sensor probe. The thermal insulation foam must withstand a temperature above 200°C. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 54: Removing Transport Fasteners And Desiccant Bags

    For details about the maximum current, see the device nameplate. ● Check that the input voltage and frequency of the primary power supply meet the requirements. ● Only trained and qualified personnel are allowed to connect cables. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 55: Optional) Installing Signal Cables

    Outdoor exhaust air Indoor return air sensor damper GND damper GND Remote Fresh air Outdoor exhaust air Indoor return air startup/ damper 24 V damper U (feedback) damper U shutdown (feedback) Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 56 Step 3 Connect the signal cable to X502 terminals 1 and 2. NO TICE If a water sensor (rope-type) is to be connected, connect the signal cable to terminals X201 and X202. Figure 3-17 Ports for a water sensor (rope-type) ----End Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 57: Optional) Installing Teamwork And Monitoring Communications Cables

    Step 1 Crimp a network cable. Figure 3-18 Teamwork communications cable and FE monitoring communications cable (1) White-and-orange (2) Orange (3) White-and-green (4) Blue (5) White-and-blue (6) Green (7) White-and-brown (8) Brown Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 58: Can Teamwork + Rs485 Monitoring

    > ● If devices are grouped ( n ≤ 4), 1; recommended: set RS485 monitoring grouping to Enable on the Modbus Settings screen for the device with the COM/FE port connected. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 59: Can Teamwork + Fe Monitoring

    ● Connect the COM/FE port on the main control module of the last smart cooling product in each group to the RS485 port on the host. ● Customers can purchase Huawei's ECC and NetEco for the monitoring system. Figure 3-20 Connecting communications cables ----End 3.4.3.3 CAN Teamwork + FE Monitoring...
  • Page 60: Fe Teamwork + Rs485 Monitoring

    ● Connect the COM/FE port on the main control module of the last smart cooling product in each group to the RS485 port on the host. ● Customers can purchase Huawei's ECC and NetEco for the monitoring system. Issue 01 (2021-01-30)
  • Page 61: Fe Teamwork + Fe Monitoring

    Note One teamwork network supports a maximum of 16 smart cooling products. NO TE Customers can purchase Huawei's switch and NetEco for the monitoring system. Figure 3-23 Connecting communications cables ----End Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 62: Installing Power Cables

    Figure 3-24 Cabling route Figure 3-25 Connecting power cables Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 63: Optional) Installing T/H Sensors Outside A Cabinet And Cables

    Step 2 Connect the OUT port on the T/H sensor outside the cabinet to the IN port on the next T/H sensor outside the cabinet in series. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 64 Cold aisle 2 temp/humid Cold aisle 3 temp/humid Cold aisle 4 temp/humid Cold aisle 5 temp/humid Cold aisle 6 temp/humid Hot aisle 1 aisle temp/humid Hot aisle 2 temp/humid Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 65: Optional) Installing Motorized Dampers And Cables

    Settings > T/H sensor on the home screen, and set the sensors in the aisles corresponding to the addresses to Enable. Otherwise, the sensors will not work. ----End 3.6 (Optional) Installing Motorized Dampers and Cables Wiring terminals have been reserved near the air damper actuator. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 66 Step 3 Connect the cables from port 3 in G1 and from port 5 in G2 to port X3.1. Step 4 Connect the cables from port 3 in G3 and port 5 in G4 to port X3.2. Figure 3-28 Terminal connection ----End Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 67: Optional) Installing Electric Heater Components And Cables

    Step 4 Connect the cables. Connect one end of the cables to the transformer terminal of the electric control box and the other end to the input end of the electric heater controller. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 68 Step 8 Press the SET button on the electric heater controller for 2s. Within 10s, press to set the parameter to 5°C, and press the SET button to save the setting. ----End Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 69: System Installation (Fdc Scenario)

    (AHU). You need to strictly follow the heating, ventilating, and air conditioning (HVAC) construction requirements. To ensure proper operation of the unit, protect it against dust, dirt, corrosive gas, and high humidity. Do not use the indoor unit in open air. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 70: Maintenance Space

    (2) Side of the indoor air (3) Electric control box return vent (end) Figure 4-2 Maintenance space (combined units, unit: mm) (1) Wall (2) Side of the indoor air (3) Electric control box return vent (end) Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 71: Storage

    Do not stack whole FusionCol8000-E systems together. ● Check the FusionCol8000-E periodically. 4.2 Materials Materials to be prepared include materials delivered by Huawei, to be purchased by the customer, and to be prepared onsite. Table 4-1 Material description Item Description...
  • Page 72 Marker Insulation tape Hammer drill Diesel forklift Manual forklift Lifting rope Rubber hose Alcohol Thermal Water pipe thread Hot melt device Clamp meter insulation foam (for rigid pipes) sealant with glue Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 73: Water Refill Pipe And Drainpipe

    Water tank G 1-1/2 inch DN50 Rigid pipe (made of g survey. drainpipe external PP-R, C-PVC, or thread other materials) connector Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 74: Pipe Supports

    If the cable used onsite does not meet the recommended specifications, the cable may fail to be routed through the waterproof connector or the waterproof connector may fail to be secured. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 75 Remarks Method Specificatio Primary input Crimped OT 10 N·m Standard terminals configuratio n, delivered with the product. Backup input Crimped OT 10 N·m Standard terminals configuratio n, delivered with the product. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 76: Installing A Fusioncol8000-E

    (1) Reserved port for combining units on the (2) Reserved port for combining units on the side Procedure Step 1 Connect the hoisting ropes and hoist the equipment to the installation area. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 77 Step 3 Secure the corner fitting box of the unit on the side of the indoor air supply vent (end). Step 4 Open the maintenance door and enter the cabinet to secure the corner fitting box. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 78 Step 5 Hoist the other device. Step 6 Place the device on the top of the installed device (ensure that the contact surface is clean). Step 7 Secure the corner fitting boxes. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 79: Checking The Refrigerant

    Figure 4-8 is missing. If any bonnet is missing, contact Huawei technical support. If no bonnet is missing, remove the valve bonnets, and press the valve plugs using the valve bonnets in turn. If gas flows out, the system is normal. If no gas flows out, contact Huawei technical support.
  • Page 80: Installing An Air Duct

    Indoor return air duct (side): secured using 48 M8x20 screws. Indoor supply air duct: secured using 40 M8x20 screws. Procedure Step 1 Install an air duct. NO TE The following describes how to install an indoor return air duct. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 81: Installing Water Pipes

    Water pipes need to be prepared onsite. If galvanized steel pipes are used, stainless steel connectors must be used to ensure sealing. After water pipes are installed, wrap thermal insulation foam. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 82 3 cm. Sealing Remove the paper protective film from the sealing putty. Seal the gaps between the water pipes and the devices using sealing putty after the pipes are correctly connected. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 83 0°C). Figure 4-13 Pipe anti-freezing solution (1) Electric heating belt (2) Water refill pipe (3) Drainpipe (connected to the utility (4) Soil drainpipes) Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 84: Removing Transport Fasteners And Desiccant Bags

    Step 2 Open the electric control box and take out the desiccant bags. Step 3 Loosen the three transport fixing bolts of the compressor using a 13# solid wrench and remove the sheet metal fasteners. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 85: Installing Cables

    When laying out cables, ensure that the power cables and signal cables are reliably separated and that electric and extra low voltage (ELV) cables are bound separately. ● Cable colors in this document are for reference only. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 86: Optional) Installing Signal Cables

    Indoor supply air Fresh air exhaust alarm 1– damper Y damper GND damper GND (control) Common Reserved Indoor supply air Fresh air exhaust alarm 2+ damper U (feedback) damper U (feedback) Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 87 Step 3 Connect the signal cable to X502 terminals 1 and 2. NO TICE If a water sensor (rope-type) is to be connected, connect the signal cable to terminals X201 and X202. Figure 4-18 Ports for a water sensor (rope-type) ----End Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 88: Optional) Installing Teamwork And Monitoring Communications Cables

    Step 1 Crimp a network cable. Figure 4-19 Teamwork communications cable and FE monitoring communications cable (1) White-and-orange (2) Orange (3) White-and-green (4) Blue (5) White-and-blue (6) Green (7) White-and-brown (8) Brown Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 89: Can Teamwork + Rs485 Monitoring

    > ● If devices are grouped ( n ≤ 4), 1; recommended: set RS485 monitoring grouping to Enable on the Modbus Settings screen for the device with the COM/FE port connected. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 90: Can Teamwork + Fe Monitoring

    ● Connect the COM/FE port on the main control module of the last smart cooling product in each group to the RS485 port on the host. ● Customers can purchase Huawei's ECC and NetEco for the monitoring system. Figure 4-21 Connecting communications cables ----End 4.4.3.3 CAN Teamwork + FE Monitoring...
  • Page 91: Fe Teamwork + Rs485 Monitoring

    ● Connect the COM/FE port on the main control module of the last smart cooling product in each group to the RS485 port on the host. ● Customers can purchase Huawei's ECC and NetEco for the monitoring system. Issue 01 (2021-01-30)
  • Page 92: Fe Teamwork + Fe Monitoring

    Note One teamwork network supports a maximum of 16 smart cooling products. NO TE Customers can purchase Huawei's switch and NetEco for the monitoring system. Figure 4-24 Connecting communications cables ----End 4.4.4 Installing Power Cables Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 93 Figure 4-25 Cabling route Figure 4-26 Connecting power cables Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 94: Optional) Installing T/H Sensors Outside A Cabinet And Cables

    Step 2 Connect the OUT port on the T/H sensor outside the cabinet to the IN port on the next T/H sensor outside the cabinet in series. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 95 Cold aisle 2 temp/humid Cold aisle 3 temp/humid Cold aisle 4 temp/humid Cold aisle 5 temp/humid Cold aisle 6 temp/humid Hot aisle 1 aisle temp/humid Hot aisle 2 temp/humid Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 96: Optional) Installing Electric Heater Components And Cables

    Cables Electric heater components include the electric heating belt, temperature sensor probe, and electric heater controller. Procedure Step 1 Remove the exhaust side panel. Step 2 Install the electric heater controller. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 97 Step 6 Use silicone sealant to seal the gaps between the heating belt, cables, pipe, and wall panels. Step 7 Use thermal insulation foam to wrap the heating belt and temperature sensor probe around the pipe. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 98 Step 8 Press the SET button on the electric heater controller for 2s. Within 10s, press to set the parameter to 5°C, and press the SET button to save the setting. ----End Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 99: Verifying The Installation

    The bolts for securing the compressor are □ Passed □ Failed tightened. Drip pan The drip pan is free of foreign matter inside □ Passed □ Failed and its drainage port is unblocked. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 100 □ Passed □ Failed The needle valve plug is secured (torque: 0.45±0.05 N·m), □ Passed □ Failed and valve bonnet is tightened. The pipes have no sharp bends. □ Passed □ Failed Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 101: Power-On Commissioning

    ----End 6.2 Device Power-On Procedure Step 1 Turn on the main switch of the unit. (For a device with dual power supplies, turn on both the primary and backup power switches.) Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 102 Confirm with Huawei technical support before modifying parameters which cannot be modified by user operator. Otherwise, Huawei will not be liable for any consequences of the modification performed by the user. ● Only certified professionals are allowed to modify advanced parameters of smart cooling products.
  • Page 103 Otherwise, the teamwork function is unavailable. Number of Enter the total number of smart systems in cooling products in the group. this group Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 104 This parameter can be set to Primary Settings > System supply power only, Primary power first, Settings setting Backup power first, and Mutual backup. NOTE You are advised to retain the default value. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 105 DO_1 action Set this parameter to On or Off based on the actual scenario. DO_2 action Set this parameter to On or Off based on the actual scenario. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 106 Humidity After Temperature and humidity setpoint control type and the humidity value under this type are set, the device operates based on the settings. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 107: Home Screen

    Running, Alarms and Settings. The controller main screen is shown in Figure 6-3. NO TICE User interfaces displayed in this document are for reference only. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 108 The current critical refers to the current critical alarm and alarm and their their quantity. quantity The current major refers to the current major alarm and alarm and their their quantity. quantity Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 109: Initial Configuration

    (Optional) Enabling T/H Sensors Prerequisites ● The T/H sensors outside the cabinet need to be enabled when they are installed, otherwise, skip Step ● This section describes how to enable Cold aisle sensor 1. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 110 ● When the application scenario is non-aisle containment, you are advised to choose Return air, and choose Cold aisle if the cold aisle T/H sensors are configured. ● Hot aisle is not recommended. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 111: Optional) Setting The Pressure Difference Control

    6.4.2 (Optional) Setting the Pressure Difference Control Prerequisites If the differential pressure sensors are installed, perform the following operations accordingly. If the differential pressure sensors are not installed, skip this part. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 112: Optional) Setting Teamwork Control Parameters

    Unit address: The address (configurable range: 1-32) of each smart cooling product in the same group cannot be the same. The smart cooling products with the smallest unit address are the host, which collects, processes, and delivers group data. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 113 Smart cooling product Set the planned conditione addresses should be teamwork unit r address different from each other. address. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 114 Enter the total of air cooling products in a group. number of smart conditione The value is an integer cooling products in rs in this ranging from 1 to 32. the group. group Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 115 Yes if forced rotation specified rotation time. is required. In normal After a forced rotation, the cases, retain the rotation period starts again. default value No. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 116 Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 117 Step 4 On the home screen of any teamwork controlled smart cooling product, tap If the teamwork control succeeds, the teamwork topology of the smart cooling product in the group is displayed. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 118 Frame: A green frame indicates the unit itself, green/non- green as shown in A non-green frame indicates other units in the group, as shown in Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 119: Setting Communications Parameters

    Check that the number of online devices in the topology is the same as the actual number of devices. – If yes, the check is complete. – If no, check the cable connection and the teamwork settings. 6.4.4 Setting Communications Parameters Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 120: Setting Communications Parameters (Modbus Rtu Protocol)

    Enable for the last device in each teamwork control group. ----End 6.4.4.2 Setting Communications Parameters (Modbus TCP Protocol) Context This section applies to the scenario where the device is connected to the NMS. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 121 Link mode to Server and client or Client. Set Client encryption to Enable. Figure 6-9 Modbus Settings 1 Figure 6-10 Modbus Settings 2 Step 3 Enter the actual IP address of the NMS. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 122 Determine whether to use the encryption operation CBC when connecting to other devices based on the site requirements. Server Enable, This parameter is configurable when Link mode is encryption Disable set to Server. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 123: Setting Communications Parameters (Snmp Protocol)

    Step 3 Set Read Community and Write Community. Tap the text box next to Read Community, set the read community parameter based on the actual plan, tap , and tap Submit. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 124 MD5 and DES protocols are not secure. It is recommended that you set Auth Protocol to SHA, and set Prop Protocol to AES. The following operations use the recommended settings as an example. Figure 6-15 Setting the protocol type Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 125 Figure 6-17 Setting an AES password Tap Submit. Step 5 Tap the text box next to SNMP Port, set SNMP Port based on the actual port number, tap , and tap Submit. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 126 After a USB flash drive has been inserted into the controller USB port and successfully identified, tap Export File under MIB File to export the MIB file to the USB flash drive for the customer's use in accessing a third-party NMS. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 127: Optional) Setting Wifi Parameters

    Setting Method WiFi SSID Set WiFi SSID based on the actual configuration. WiFi SSID is the name used for the WiFi hotspot over which a mobile phone connects to smart cooling product. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 128: Startup

    No, no password is required for startup or shutdown verification. Prerequisites Download the Service Expert app from HUAWEI AppGallery. The app can only run on Android currently. You must apply for the permission to use the app after downloading it.
  • Page 129 The QR code shown in the preceding figure is used for scanning on the mobile app. ● If it is not the initial startup, tap Confirm to start the unit. Figure 6-24 Startup Step 2 Open the Service Expert app on the mobile phone. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 130 NO TICE After factory settings are restored, startup verification is required. Step 3 Tap Startup on the home screen of the app. Figure 6-25 Offline activation Step 4 Tap Offline Activation. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 131: Wizard Startup

    Step 7 After the smart cooling product is started, the home screen is displayed. ----End 6.6 Wizard Startup Context Wizard startup allows you to commission the indoor fan, spray system, exhaust fan, and cooling system, and supports automatic running and judgment of components. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 132 Step 2 Tap Yes to enter the screen for checking before startup. Figure 6-28 Checking before startup screen Step 3 Follow the onscreen instructions to complete the wizard startup. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 133: Optional) Power-Off

    □ Passed □ Failed direction marked on the frame. Condensate water in the water pan is drained smoothly. □ Passed □ Failed All adjustable side panels have been installed. □ Passed □ Failed Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 134: Webui

    SettingsWAN IP Settings, and set the IP address, subnet mask, and gateway for the smart cooling product. Configure the PC IP address and the IP address of the smart cooling product in the same network segment. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 135 Click the Advanced tab and select Use TLS1.1 and Use TLS1.2. Figure 7-1 Setting Internet options (Optional) Click the Connections tab and select LAN settings. (Optional) Under Proxy server, deselect Use a proxy server for your LAN. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 136 Figure 7-3 Security certificate problem On the login page, enter the preset user name admin and preset password Changeme, set the language, enter the verification code, and click Log In. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 137: Introduction To The Webui

    ● Allows you to implement user management, for example, adding and deleting a user. ● Allows you to configure files. You can export and import files to implement quick device configuration. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 138: System Maintenance

    During operation, comply with the safety symbols on the device and all the safety instructions in this document. The safety precautions provided in this document do not cover all the safety precautions. Huawei shall not be liable for any consequence caused by the violation of the safety operation regulations and design, production, and usage standards.
  • Page 139: Routine Maintenance

    FusionCol8000-E240 Modular Indirect Evaporative Cooling System User Manual 8 System Maintenance ● Exercise caution during professional maintenance. For details, contact Huawei technical support. ● When replacing a component, do not lean the component against the cabinet. 8.2 Routine Maintenance Smart Cooling Product Running ●...
  • Page 140: Monthly Maintenance

    There are no within the normal ranges. If the oil stains. pressure is beyond the normal range, contact Huawei technical support. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 141: Quarterly Maintenance

    View historical alarms generated in this quarter and select the most common five ones. (If no monitoring system is available, skip this item.) Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 142: Yearly Maintenance

    Exhaust Enter the diagnosis mode, Replace the fan. fan and start the exhaust fan and indoor indoor fan, and check whether the fan runs properly without any abnormal noise. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 143: Troubleshooting

    ● The fan vibrates violently. ● The temperature rise of the motor is too high. ● One of the fans is faulty. Cut off the power supply during maintenance to ensure safety. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 144 Clear foreign matters or dirt in the fan if rotates collision necessary. slowly. The active Check whether the air circulation is normal. temperature Clear foreign matters if necessary. management The fan blade is blocked or polluted. function is enabled Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 145 ● The ventilation device can only be connected to a circuit with an omnipolar isolation switch. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 146 Before performing any operation on the smart cooling product, disconnect the power supply. Table 8-5 Troubleshooting of common faults Symptom Possible Cause Solution Air leakage The connection nut is loose Tighten the nut. due to long-distance transportation. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 147 Check whether the motor is damaged. damaged and needs to be replaced. The compressor does not Check the requirement status need to be started. on the display. The drive is faulty. Replace the drive. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 148 The fan fails to The switch of the fan is Check the switch of the fan. start. turned off. The fan is damaged. Replace the fan. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 149: Component Replacement

    8.4 Component Replacement 8.4.1 Component Position (Building Scenario) Figure 8-1 Components to be replaced (building scenario) (1) Differential (2) Indoor return air (3) Air filter (4) Exhaust fan pressure switch T/H sensor Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 150: Component Position (Fdc Scenario)

    (11) Fan drive 8.4.3 Replacing an Air Filter (Building Scenario) Prerequisites ● An air filter needs to be replaced. ● A spare air filter of the same model is available and functional. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 151 Figure 8-3 Replacing an air filter Step 3 Replace the outdoor intake air filter (side). Remove the air filter fasteners and take out the air filter. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 152 Step 4 Replace the indoor return air filter (top). Open the maintenance door corresponding to the air filter, remove the fastener from the air filter, and pull out the air filter. Figure 8-5 Replacing an air filter Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 153: Replacing An Air Filter (Fdc Scenario)

    Step 2 Replace the outdoor intake air filter. Remove the air filter fasteners and take out the air filter from the end. Figure 8-6 Replacing an air filter Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 154: Replacing A Differential Pressure Switch (Building Scenario)

    A spare differential pressure switch of the same model is available and functional. ● Tool: Phillips screwdriver Context The differential pressure switch can be maintained from the end only after the air filter is removed. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 155: Replacing A Differential Pressure Switch (Fdc Scenario)

    A spare differential pressure switch of the same model is available and functional. ● Tool: Phillips screwdriver Context The differential pressure switch can be maintained from the end only after the air filter is removed. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 156 Step 5 Remove the screws on the top cover of the differential pressure switch and cable screws using a Phillips screwdriver and remove the cables. Step 6 Remove the four screws using a Phillips screwdriver and remove the differential pressure switch. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 157: Replacing A T/H Sensor (Building Scenario)

    Step 2 Remove the indoor return air filter. Step 3 Remove the indoor return air T/H sensor. Cut off the cable tie that secures the cable, and remove the cable from the T/H sensor. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 158 Step 7 Install the new T/H sensor and reconnect the cable. NO TICE Before installing the new T/H sensor, check that its DIP switch settings are consistent with the DIP switch settings of the old T/H sensor. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 159: Replacing A T/H Sensor (Fdc Scenario)

    T/H sensor, push the baffle plate, and remove the T/H sensor and the sheet metal fastener. Figure 8-12 Removing the T/H sensor sheet metal fastener Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 160 DIP switch settings of the old T/H sensor. Step 8 Power on the device and tap Start on the home screen. Ensure that the device is running properly without generating alarms. ----End Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 161: Replacing An Air Exhaust Ntc Temperature Sensor (Building Scenario)

    Exercise caution because the device is still energized after it is shut down on the controller home screen. Step 2 Open the adjustable side panel. Step 3 Remove the sealing plate from the exhaust fan. Figure 8-15 Removing the sealing plate from the exhaust fan Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 162: Replacing An Air Exhaust Ntc Temperature Sensor (Fdc Scenario)

    Step 6 Bind the cable ties. Step 7 Power on the device and tap Start on the home screen. Ensure that the device is running properly without generating alarms. ----End Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 163: Replacing An Air Supply Ntc Temperature Sensor

    Step 5 Remove the interconnection terminal from the cable of the NTC temperature sensor. Step 6 Install the new NTC temperature sensor, reconnect the cables, and secure the NTC temperature sensor in the original position. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 164: Replacing An Air Supply Fan

    Step 3 Cut off the cable ties that bind the cable connected to the faulty fan, and remove the fan terminal. Step 4 Before replacing the fifth air supply fan, remove the post, pipe, and baffle plate in front of the fan. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 165 ● When you pull out the second fan horizontally, the latch is stuck. Press the latch and pull out the fan horizontally. Step 6 Unscrew the fan support and take out the fan. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 166 Step 11 Choose Maint > Performance Maint on the home screen and clear the indoor fan runtime. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 167: Replacing A Compressor

    Step 2 Remove the adjustable side panels for the compressor. Step 3 Reclaim the refrigerant from the low pressure needle valve and liquid pipe needle valve to ensure that there is no pressure inside the system. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 168 Use a 13# socket wrench (or solid wrench) to remove the four nut washers and spring washers that secure the compressor and remove the compressor. NO TICE Do not hold the suction inlet and exhaust outlet to move the compressor. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 169 Step 11 After checking that the smart cooling product does not leak, vacuumize the smart cooling product and fill the refrigerant. Step 12 Check that the compressor cable phase sequence is correct, power on the device, and tap Start on the home screen. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 170: R410A Refrigerant

    ----End 8.4.13.2 R410A Refrigerant CA UTION Do not use refrigerant of poor quality. Huawei will not be liable for any device damage caused by using refrigerant of poor quality. Verify that the refrigerant is authentic in the following ways: Dial the refrigerant vendor's hotline to confirm the refrigerant authenticity.
  • Page 171 0.93 1.65 0.96 1.69 2.76 0.99 1.74 2.83 1.02 1.79 1.05 1.84 2.97 1.09 1.89 3.04 1.12 1.94 3.11 1.16 1.99 3.19 1.19 2.04 3.26 1.23 3.34 1.27 2.15 – – Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 172: Injecting Nitrogen To Preserve The Pressure For Refrigerant Pipes

    (4) High pressure gauge (5) Low pressure needle valve (6) Liquid pipe needle valve NO TICE The outlet pressure of the reducing valve should be within 3.0 MPa; otherwise, components may be damaged. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 173: Vacuumizing And Precharging Refrigerant

    During the commissioning of the smart cooling product, ensure that no combustion-supporting materials (such as air or additive) enter the smart cooling product system. Huawei is not liable for any risks and losses caused due to violation. 8.4.13.4.1 Refrigerant Charge Amount Requirements...
  • Page 174 1 hour. Then check that the pressure does not rise evidently. ----End Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 175: Precharging Refrigerant

    Tighten the nut when cold air escapes out of the nut. Step 3 Put the refrigerant cylinder upside down on the electronic balance. Clear the reading on the balance. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 176: Charging The Remaining Refrigerant

    8 System Maintenance NO TICE If the R410A refrigerant is provided by Huawei, put the refrigerant cylinder upside down when charging the refrigerant. If the refrigerant is not provided by Huawei, check with the refrigerant provider whether the cylinder has a siphon. If the cylinder has a siphon, stand the cylinder when charging refrigerant.
  • Page 177 Table 8-8 Proper ranges of discharge pressure Outdoor Discharge Suction Pressure Suction Ambient Pressure Range Range Superheat Temperature Degree Below 15°C 1.5–2.5 MPa 0.5–1.2 MPa 5–15°C 15–35°C 1.5–3.1 MPa 35–45°C 2.5–3.8 MPa Above 45°C 3.1–4.15 MPa Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 178: Replacing A Filter Dryer

    Step 1 On the controller home screen, tap Shutdown and turn off the device switch in the PDF. NO TICE Exercise caution because the device is still energized after it is shut down on the controller home screen. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 179 ● Do not use face-down bonding when welding. Remove the rubber plug from the port of the filter dryer. Install the filter dryer in the unit and weld copper pipes at both ends. Reinstall the hold hoop. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 180: Replacing A Compressor Drive

    10 minutes. Otherwise, electrical shocks may occur. Procedure Step 1 On the controller home screen, tap Shutdown and turn off the device switch in the PDF. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 181: Replacing A Fan Drive

    ----End 8.4.16 Replacing a Fan Drive Prerequisites ● A drive needs to be replaced. ● A spare drive of the same model is available and functional. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 182 Figure 8-30 Removing the fan drive Step 5 Install the new fan drive and insert it into the corresponding slot in the power distribution subrack. Step 6 Flip the clip to lock the fan drive. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 183: Replacing A Float

    Step 4 Cut off the cable ties on the float cable and remove the interconnection terminal. Step 5 Loosen the float nut using a wrench and remove the float from the water tank. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 184: Replacing A Water Pump

    Before replacing the water pump, drain water from the water tank completely. Procedure Step 1 On the controller home screen, tap Shutdown and turn off the device switch in the PDF. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 185: Replacing A Switch

    Step 7 Tap Start on the home screen. Ensure that the smart cooling product is running normally without any alarms. ----End 8.4.19 Replacing a Switch Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 186 Step 5 Install the new switch. Clamp the clip at the lower side of the new switch to the guide rail, push the switch upwards, and press the switch inwards. Step 6 Connect the cables again. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 187: Replacing A Contactor

    Step 3 Press the snap ring of the faulty contactor using a flat-head screwdriver, pull the snap ring outwards, and remove the faulty contactor. Figure 8-35 Removing a contactor NO TICE The figure is for reference only. The actual products prevail. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 188: Replacing An Spd

    Step 2 Open the door of the electric control box. Step 3 Pry the clip ring of the faulty SPD using a flat-head screwdriver, and remove the faulty SPD. Figure 8-36 Removing an SPD Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 189: Replacing A Fuse

    Step 5 Close the door of the electric control box. Step 6 Power on the device and tap Start on the home screen. Ensure that the device is running properly without generating alarms. ----End 8.4.23 Replacing a Relay Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 190 Figure 8-37 Replacing a relay (1) Base (2) Coil (3) Clip ring (4) Metal plate Step 6 Install a new coil or base. Step 7 Close the door of the electric control box. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 191 Cooling System User Manual 8 System Maintenance Step 8 Power on the device and tap Start on the home screen. Ensure that the device is running properly without generating alarms. ----End Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 192: Faq

    You can choose to display the curves in recent one hour, one day, seven days, or 30 days. Procedure Step 1 Tap T/H Curve on the home screen. Figure 9-1 T/H Curve screen Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 193: How Do I View Logs

    View on Status Summary: On the home screen, choose Common Function > Status Summary or choose Running > Status Summary. The Status Summary screen is displayed. The following figure shows the screen displayed after choosing Running > Status Summary. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 194: How Do I View System Parameters

    On the home screen, choose Common Function > Summary. The Summary screen is displayed. ● On the home screen, choose Running > System Overview. The System Overview screen is displayed. Figure 9-4 System Overview screen ----End Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 195: How Do I View Version Information

    Figure 9-5 Service Info screen ----End 9.1.7 How Do I Check Teamwork Control Information? Procedure Step 1 On the home screen, choose > to display the teamwork information of the current group. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 196: How Do I Mute Or Silence A Buzzer

    ● You can query an alarm on the alarm list in "Alarm Reference" based on the alarm ID to know causes of the alarm and methods to clear the alarm. Step 2 You can tap an alarm to go to the Details screen of the alarm. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 197: How Do I Clear Component Runtime

    Alarms > Query Hist Alarms on the home screen. NO TE Historical alarms are displayed in chronological order. The latest cleared alarm is displayed in the uppermost row. 9.1.10 How Do I Clear Component Runtime? Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 198: How Do I Calibrate A T/H Sensor

    If you need to change a password, log in as user admin or operator. ● You can only modify the password of the current user. Procedure Step 1 On the home screen, choose Settings > User Settings. The User Settings screen is displayed. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 199: How Do I Set The Balance Of Water And Electricity Consumption

    Step 1 On the home screen, choose Settings > System Settings > System Control and set Balance of water and electricity consumption based on the actual situation. Figure 9-10 Setting parameters Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 200: How Do I Set Alarm Parameters

    45. ● If you need to change alarm settings, log in as user Admin. NO TICE Be careful when configuring alarm parameters. Only professional maintenance personnel can change alarm settings. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 201: How Do I Commission A Component

    ● The following describes how to commission an indoor fan. Procedure Step 1 On the home screen, choose Maint > Diagnostic > Enter to enter the diagnostic mode. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 202: How Do I Query The Setting Of A Parameter Before Change

    The log query screen displays logs of LCD user operations, including user login and setting change records. Figure 9-13 Query Logs 9.1.17 How Do I Export Data? Context One-click export allows you to export current alarms, historical alarms, and logs. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 203: How Can I Export Or Import A Configuration File

    64 GB. For a non-FAT32 USB flash drive, format it to the FAT32 format using a computer. You can export the configuration file containing the parameter settings of smart cooling product 1 to a USB flash drive. When you need to set the same Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 204 Step 5 On the home screen of smart cooling product 2, choose Maint > USB Operations > Import Config. Figure 9-16 Selecting the configuration file Step 6 Select the file package to be imported and tap Next. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 205: How Do I Import A Certificate And Key

    ● Before using a USB flash drive, ensure that its data has been scanned by antivirus software and is secure. Procedure Step 1 On the home screen, choose Maint > USB Operations > Import Certificate. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 206: Webui Operations

    Operator: The user name is operator and password is Changeme by default. Operator has no rights for network security certification, Modbus, SNMP, software upgrade, and fault information. Procedure Step 1 Change the login password. Log in to the WebUI as an administrator. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 207 ● The value of Advance Warning Before Password Expires (days) must not be greater than the value of Password Validity Period. ● The WebUI supports a maximum of 16 users and a maximum of 3 concurrent online users. ----End Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 208: How Do I Install A Network Security Certificate

    Click Details in the Alarm Description area to view alarm details of devices. Step 3 To view historical alarms, choose Query > Historical Alarm, set Equipment, Start time, End time, and Sorting Mode, and click Query. ----End Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 209: How Do I Export Or Import A Configuration File

    Step 1 Log in to the smart cooling product WebUI as an administrator. Step 2 Choose Maintenance > Fault Information. Step 3 (Optional) Select Encryption Password for Export and enter an encryption password. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 210: How Do I Change An Ip Address

    Step 3 Choose Maintenance > Version Information and view the version information, software version, and BSP version. ----End Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 211: A Cleaning The Device

    Clear dust, rain marks, or stains on the device exterior using a long-handled soft brush dipped with alkaline or neutral detergent. Wash the device exterior with clean water. NO TE It is recommended that you clean the device once every quarter. ----End Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 212: B Repairing Paint

    The device exterior should be intact. If the surface is bumped, scratched, or rusted, the paint should be repaired. NO TE Check the paint damage on the device and prepare appropriate tools and materials. The number of materials depends on site requirements. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 213 60 minutes before performing any further operation. Logo and pattern Seek help from Huawei headquarters for a detailed damage painting solution. Frontline personnel can turn to local advertisement coating suppliers. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 214 Then wipe off the alcohol with a clean and dry cotton cloth. Figure B-2 Wiping a polished or damaged area using anhydrous alcohol Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 215 When a pattern has different colors, to prevent undamaged areas and those with different colors from being polluted during repainting, cover such areas using white paper and adhesive tape before repairing paint. Figure B-4 Manual paint spray Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 216 Cooling System User Manual B Repairing Paint Figure B-5 Repainting using a brush Figure B-6 Repainting using a painting gun ----End Follow-up Procedure Check whether the surface meets the requirement after repainting. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 217: C Parameter Description

    Settings > Comm For details, see the section "Setting Communications Settings > WAN IP Parameters." Settings Settings > Comm For details, see the section "Setting Communications Settings > LAN IP Parameters." Settings Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 218 ● For scenarios without grouping, set monitoring this parameter to Enable for the last grouping device. ● For scenarios with grouping, set this parameter to Enable for the last device in each teamwork control group. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 219 NMS. Active alarms are displayed on Sensor sensor fault the LCD and the system performs related protection actions. ● Disable: No alarms are generated and no protection actions are performed. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 220 Hot aisle When detecting that the alarm value is greater than the threshold, the system temperature generates an alarm. alarm Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 221 LCD and the system performs blocked related protection actions. alarm ● Disable: No alarms are generated and no protection actions are performed. Power Sets voltage thresholds. voltage NOTE abnormal Use the default value. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 222 You can enable or disable the cold aisle sensor* sensors. Hot aisle You can enable or disable the hot aisle sensor* sensors. Outdoor Outdoor intake air sensor* can be set to intake air Enable or Disable. sensor* Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 223 If this parameter is set to Disable, the device does not start dehumidification. Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 224 This parameter can be set to Enable or function Disable. System This parameter ensures that the total power limit operating power of the system is always below the preset value. Cooling Select a running mode. mode control Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 225 You can enable or disable the cold aisle sensor* sensors. Hot aisle You can enable or disable the hot aisle sensor* sensors. Outdoor Outdoor intake air sensor* can be set to intake air Enable or Disable. sensor* Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 226 Preset total Sets the total energy consumption of the system unit. power consumption Maint > System total Display the accumulated runtime for Performance Maint power each component. consumption Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 227 1°C lower than that Return air detected by other devices, set the temp calibration value to 1°C. calibration value Return air humidity calibration value Outdoor intake air temperature calibration value Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 228 Paral comp discharge pres calibration value Paral comp sys suction pres calibration value Paral comp sys suction temp calibration value Paral comp sys liquid pipe temp calibration value Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 229: D Electrical Conceptual Diagrams

    FusionCol8000-E240 Modular Indirect Evaporative Cooling System User Manual D Electrical Conceptual Diagrams Electrical Conceptual Diagrams Figure D-1 Electrical conceptual diagram 1 Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 230 FusionCol8000-E240 Modular Indirect Evaporative Cooling System User Manual D Electrical Conceptual Diagrams Figure D-2 Electrical conceptual diagram 2 Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 231 FusionCol8000-E240 Modular Indirect Evaporative Cooling System User Manual D Electrical Conceptual Diagrams Figure D-3 Electrical conceptual diagram 3 Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 232 FusionCol8000-E240 Modular Indirect Evaporative Cooling System User Manual D Electrical Conceptual Diagrams Figure D-4 Electrical conceptual diagram 4 Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 233 FusionCol8000-E240 Modular Indirect Evaporative Cooling System User Manual D Electrical Conceptual Diagrams Figure D-5 Electrical conceptual diagram 5 Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 234 FusionCol8000-E240 Modular Indirect Evaporative Cooling System User Manual D Electrical Conceptual Diagrams Figure D-6 Electrical conceptual diagram 6 Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 235 FusionCol8000-E240 Modular Indirect Evaporative Cooling System User Manual D Electrical Conceptual Diagrams Figure D-7 Electrical conceptual diagram 7 Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 236 FusionCol8000-E240 Modular Indirect Evaporative Cooling System User Manual D Electrical Conceptual Diagrams Figure D-8 Electrical conceptual diagram 8 Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 237: E Physical Ports (Building Scenario)

    FusionCol8000-E240 Modular Indirect Evaporative Cooling System User Manual E Physical Ports (Building Scenario) Physical Ports (Building Scenario) E.1 Physical Ports of Air Vents Figure E-1 Dimensions of an indoor air supply vent (unit: mm) Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 238 Cooling System User Manual E Physical Ports (Building Scenario) Figure E-2 Dimensions of an outdoor air intake vent (unit: mm) Figure E-3 Dimensions of an indoor air return vent (unit: mm) Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 239: Physical Ports Of Pipes

    E Physical Ports (Building Scenario) Figure E-4 Dimensions of an outdoor air exhaust vent (unit: mm) E.2 Physical Ports of Pipes Figure E-5 Dimensions of a water refill pipe (unit: mm) Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 240 Condensate water G 3/4 inch internal thread pan drainpipe of the connector evaporator Water tank G 1-1/2 inch internal thread drainpipe connector Condensate water G 1 inch internal thread pan drainpipe connector Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 241: Physical Ports Of Water Seals

    E Physical Ports (Building Scenario) E.3 Physical Ports of Water Seals Figure E-7 Dimensions of the condensate water pan drainpipe of the evaporator Figure E-8 Dimensions of the water tank drainpipe Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 242: Physical Ports Of Cables

    Figure E-9 Dimensions of the condensate water pan drainpipe E.4 Physical Ports of Cables Figure E-10 Cable ports on an electric control box (front view) (1) Primary power switch QF1 (2) Backup power switch QF2 Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 243 Table E-2 Physical ports of cables Type Item Specifications/ Quantity Port Power cable Primary power AC1 input L1 port supply AC1 input L2 AC1 input L3 Backup power AC2 input L1 supply AC2 input L2 Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 244 Smoke sensor port input Water sensor port input Supply air damper 24 V DC power port supply; voltage range: 0–10 V Exhaust air damper port Return air damper port Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 245: F Physical Ports (Fdc Scenario)

    Cooling System User Manual F Physical Ports (FDC Scenario) Physical Ports (FDC Scenario) F.1 Physical Ports of Air Vents Figure F-1 Dimensions of an indoor air supply vent (end) (unit: mm) Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 246 User Manual F Physical Ports (FDC Scenario) Figure F-2 Dimensions of an indoor air return vent (end) (unit: mm) Figure F-3 Dimensions of an indoor air return vent (side) (unit: mm) Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 247 User Manual F Physical Ports (FDC Scenario) Figure F-4 Dimensions of an outdoor air intake vent (end) (unit: mm) Figure F-5 Dimensions of an outdoor air exhaust vent (top) (unit: mm) Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 248: Physical Ports Of Pipes

    Figure F-6 Dimensions of an outdoor air exhaust vent (end) (unit: mm) F.2 Physical Ports of Pipes Figure F-7 Dimensions of a water refill pipe (side, unit: mm) (1) Water tank refill pipe Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 249 Condensate water G 3/4 inch internal thread pan drainpipe of the connector evaporator Water tank G 1-1/2 inch internal thread drainpipe connector Condensate water G 1 inch internal thread pan drainpipe connector Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 250: Physical Ports Of Cables

    Figure F-10 Dimensions of cable holes on a power distribution box (bottom view, unit: mm) (1) Primary power cable hole (2) Backup power cable hole (3) Reserved customer signal cable hole Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 251 AC1 input L2 AC1 input L3 Backup power AC2 input L1 supply AC2 input L2 AC2 input L3 Teamwork Monitoring system RS485/FE control/ Teamwork monitoring/ external reserved ports Remote startup/ shutdown Common alarm Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 252 FusionCol8000-E240 Modular Indirect Evaporative Cooling System User Manual F Physical Ports (FDC Scenario) Type Item Specifications/ Quantity Port Temperature and RS485 humidity (T/H) sensor, cascading supported Smoke sensor port input Water sensor port input Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 253: G Acronyms And Abbreviations

    User Manual G Acronyms and Abbreviations Acronyms and Abbreviations controller area network fast Ethernet negative temperature coefficient power supply unit positive temperature coefficient power usage effectiveness RCCB residual current circuit breaker Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.
  • Page 254 FusionCol8000-E240 Modular Indirect Evaporative Cooling System User Manual G Acronyms and Abbreviations thin film transistor Universal Series Bus Issue 01 (2021-01-30) Copyright © Huawei Technologies Co., Ltd.

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