Page 1 NetCol8000-A(050, 100) In-room Air Cooled Smart Cooling Product User Manual Issue Date 2020-10-28 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
Cooling Product User Manual About This Document About This Document Purpose This document applies to the following NetCol8000-A series in-room air cooled smart cooling product: ● NetCol8000-A100: NetCol8000-A100 in-room air cooled smart cooling product that uses the downflow mode. ●...
Page 4 Issue 12 (2020-10-28) Added FAQ. Issue 11 (2020-01-13) Updated the safety information. Issue 10 (2019-01-15) Updated the manual name and so on. Issue 09 (2018-08-05) Modified the section of environmental requirements. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 5 Modified the procedure for replacing an indoor fan. Issue 03 (2014-10-10) Modified the electric control box. Issue 02 (2014-07-30) Updated the document description. Issue 01 (2013-12-10) This issue is the first official release. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 6: Table Of Contents
3.1 Installation Precautions..............................24 3.1.1 Precautions..................................24 3.1.2 Tools....................................... 25 3.1.3 Material Preparations..............................28 3.1.4 Structural Specifications..............................35 3.1.5 Installation Layout................................36 3.1.6 Installation Requirements...............................39 3.2 Installation Process................................40 3.3 Unpacking....................................40 Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 7 4.3 Commissioning..................................86 4.3.1 Circuit Breakers.................................. 86 4.3.2 Commissioning Procedure.............................. 88 4.4 Check After the Commissioning............................89 5 ACC Introduction........................91 5.1 Home Screen..................................91 5.2 Menu Hierarchy..................................93 5.3 Quick Settings..................................94 Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 8 5.18 Rectifying Faults of the E-label Identification Board................... 138 5.19 How to Import a Certificate and Key........................139 6 FAQ............................141 6.1 How Do I Query the Setting of a Parameter Before Change?................141 7 System Operation and Maintenance................142 Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 9 A Support Specifications....................... 199 B Electrical Control Boxes..................... 201 C Acronyms and Abbreviations................... 203 D Electrical Schematic Diagram (NetCol8000-A050)............ 204 E Electrical Schematic Diagram (NetCol8000-A100)............. 205 F Controller Menu Structure....................206 Issue 12 (2020-10-28) 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 12 (2020-10-28) 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 12 (2020-10-28) 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 12 (2020-10-28) 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 12 (2020-10-28) 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 12 (2020-10-28) 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 12 (2020-10-28) 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 12 (2020-10-28) 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 12 (2020-10-28) 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 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 21: Product Description
2.1 Model Description The naming rule for the NetCol8000-A series products is as follows. Figure 2-1 Naming rule for the NetCol8000-A series products Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 22: Composition
The NetCol8000-A100 has four front doors and the NetCol8000-A050 has two front doors. The rear panel and side panels are secured by screws. Figure 2-3 shows the NetCol8000-A100 indoor unit, and Figure 2-4 shows the NetCol8000- A050 indoor unit. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 23 Figure 2-3 NetCol8000-A100D indoor unit Figure 2-4 NetCol8000-A050D indoor unit Composition An indoor unit consists of a cabinet, compressor, evaporator, thermostatic expansion valve, infrared humidifier, indoor fan (EC), electrical heater, dry filter and air filter. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 24 The dry filter absorbs the water in the refrigerant pipes and filters the foreign matter, which reduces damage rates of the components and ensures the efficient and reliable operating. ● Air filter Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 25: Controller
Buzzer The device is operating properly, Green No buzzing or a warning is generated. There is an unacknowledged Yellow Intermittent buzzing major alarm. There is an unacknowledged Constant buzzing critical alarm. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 26 2 Product Description Ports Figure 2-6 Controller side ports Table 2-2 Ports Name Note MUS05A Reserved FE (fast Ethernet) communications port communications port for the main control board and LCD RS485_1 Reserved Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 27: Functions And Features
(Applicable to V200R001C20 and later versions) NOTE 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. ● Insert the USB flash drive, import and export the configuration file, export run logs, and upgrade software.
Page 28: Monitoring System
(RS485) for remote management. The NetCol8000-A series products can be networked over a controller area network (CAN) bus to perform the teamwork, which efficiently save energy and prolongs the service life.
Page 29: Environment Specifications
Do not install the smart cooling product near a noise-sensitive place such as an office or a conference room. Table 2-5 Environmental specifications Parameter Specifications Ambient humidity 20% RH to 80% RH. Ambient temperature 0°C to 40°C. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 30: Performance Parameters
0.737 0.692 0.649 0.608 volume coefficien Cooling 0.940 0.909 0.878 0.846 0.815 0.784 0.753 capacity coefficien 2.4 Performance Parameters The following table lists the performance parameters of the NetCol8000-A series product. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 31 NetCol8000-A(050, 100) In-room Air Cooled Smart Cooling Product User Manual 2 Product Description Table 2-7 Performance parameters of the NetCol8000-A series product Parameter NetCol8000-A100D NetCol8000-A050D Power 380 V to 415 V AC, 3Ph, 50 Hz (Single power supply) Rated voltage ± 10%...
Page 32 The customer is advised to add a dehumidifier (unconfigured). NO TE The test condition is that the indoor dry-bulb temperature is 24°C, condensing temperature is 45°C, and relative humidifier is 50%. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 33: Installation Guide
When constructing multiple smart cooling products, label cables and copper pipes between indoor and outdoor units, and connect copper pipes as well as cables properly to prevent incorrect connection. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 34: Tools
(PVC) insulation discharge (ESD) tape gloves Claw hammer Wire stripper Needle-nose Diagonal pliers pliers Combination Measuring tape Torch Step ladder pliers Sealant or seal locking pliers tape (for thermal insulation foam) Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 35 Table 3-3 Pipe installation tools Appearance, Parameter, and Name Cutter Welding torch Silver braze (with Nitrogen 5% silver welding rod) Acetylene Oxygen Hot melt tool Sealant or seal tape Anhydrous industrial alcohol Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 36 Wire stripper discharge (ESD) crimping tool gloves Heat gun Polyvinyl chloride (PVC) insulation tape Table 3-5 Commissioning tools Appearance, Parameter, and Name Leather hose Nitrogen Pressure gauge Vacuum pump (R410A dedicated) Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 37: Material Preparations
Mandatory: mandatory configuration. This material is provided by Huawei and can be found in delivered fittings. ● Optional: This material can be purchased from Huawei or prepared by yourself. ● Unconfigured: This material is unconfigured by Huawei and must be prepared by yourself.
Page 38 3 Installation Guide (Optional) Refrigerant R410A CA UTION Do not use inferior refrigerant. Otherwise, Huawei has no responsibility for the damage caused by the inferior refrigerant. The following methods are recommended to identify the refrigerant. You are suggested to use R410A from the brand of Dupont, Daikin, Honeywell, or the same quality refrigerant.
Page 39 To ensure the NetCol8000-A reliability, make an oil trap every 5 m to 6 m along pipes in the vertical direction and make an inverted trap respectively at the intake vent and exhaust vent of the outdoor unit. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 40 Φ22 x 1.0 The flaring inner oil trap diameter of the surface of copper pipe is forming 22.4 mm, and the parts necking outer should not diameter is 19.5 be uneven. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 41 Hose: Prepare hoses and pagoda connectors same as parts 4 and 6 in B of Figure 3-3. NO TICE The sum of calcium and magnesium cannot exceed 600 mg/L. Drainpipes must be able to withstand temperatures higher than 85°C. Otherwise, the pipes may be deformed. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 42 Other parts need to be configured. Pipe Support Preparations The following figure shows the support for refrigerant and water pipes. Determine detailed specifications based on onsite situation. Figure 3-4 Pipeline support Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 43 5 x 25 mm 000- A100 Terminals Common terminal, single cord L1/L2/L3/N 10 pcs power end terminal, conductor cross cable section 25 mm , length 22 mm, 50 A, insertion depth 12 mm, Ivory Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 44: Structural Specifications
Before installation, check that all needle valves have valve plugs. If a needle valve has no valve plug, install an R410A valve plug and tighten the plug. 3.1.4 Structural Specifications Figure 3-5 NetCol8000-A100D indoor unit structural specifications (unit: mm) Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 45: Installation Layout
Figure 3-7 Cooling system components of the NetCol8000-A (1) Compressor (2) Service valve (3) Discharge temperature switch (4) Discharge pipe (5) High pressure switch (6) Exhaust pipe needle valve (7) Check valve (8) Ball valve (9) Oil trap Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 46 ● The pipes in dash are to be routed onsite by technical personnel. ● Huawei does not provide the inverted trap (component 11) and oil traps (component 9) used in the scenario where the outdoor unit is placed higher than the indoor unit.
Page 47 (2) Tilted liquid pipeline NO TE ● The gradients of the liquid pipeline and the discharge pipeline are at least 1: 200. ● The graphic in dotted box shows the installation layout for NetCol8000-A050. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 48: Installation Requirements
NetCol8000-A50D adopt downward supply mode. Therefore, the shelter should be equipped with a raised floor, and the support for the raised floor should be at least 400 mm in height. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 49: Installation Process
NetCol8000-A(050, 100) In-room Air Cooled Smart Cooling Product User Manual 3 Installation Guide 3.2 Installation Process Figure 3-11 Process of installing an indoor unit 3.3 Unpacking Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 50: Removing The Package
The NetCol8000-A100 is fixed onto the pallet with five M12x120 bolts, need to remove the four bolts around the four corner angles and one middle bolt, you can use an M19 socket wrench to remove the bolts. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 51: Checking Fittings
The cooling system has good air tightness. (Remove the bonnet from the needle valve and press the valve plug to check whether there is a sound of air flow. If there is no sound of air flow, please contact Huawei.) ●...
Page 52 Step 1 Secure the support to the ground by using M12 expansion bolts. Figure 3-15 Installing a support Step 2 Secure an indoor unit onto a support. ● Place the indoor unit on the support. Use three M12 bolts to secure the NetCol8000-A050. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 53: Lowing An Indoor Fan
Before lowering an indoor fan, open the front doors, and remove screws and then internal panels. Context Indoor fans are installed on the bottom plate of the cabinet by using M8x20 screws during the transportation. When installing an indoor unit of the Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 54 Figure 3-18 Lowering a NetCol8000-A050D indoor fan (1) Indoor raised floor (2) Indoor concrete floor Procedure Step 1 Remove the tooling beam of the indoor fan from the tooling body by removing the two M6x16 bolts. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 55 Figure 3-20 Removing the bolts on the cover plate of the flow deflecting ring Step 3 Install the tooling beam onto the cover plate of the flow deflecting ring by using two M8x20 bolts. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 56 Step 4 Remove the capstan components from the tooling body by removing the four M6x16 bolts. Figure 3-22 Removing the capstan components Step 5 Separate the tooling support and the capstan components. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 57 Step 6 Reinstall the capstan components onto the support by using four M6x16 bolts. Figure 3-24 Installing the capstan components Step 7 Install the capstan components of the indoor fan to the front beam of the indoor unit by using two M6x16 bolts. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 58 Figure 3-26. Ensure that the hook is secured to the tooling beam by using a steel wire. Figure 3-26 Connecting the hook to the tooling beam Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 59 Step 10 Slowly rotate the handle of the capstan to lower the indoor fan to the bottom of the indoor unit. Secure the indoor fan to the bottom of the indoor unit by using four M8x20 bolts. Figure 3-28 Lowering the indoor fan Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 60: Connecting Pipelines
Step 11 Remove the two bolts at the front of the tooling body and loose the two bolts at the rear of the tooling body to remove the tooling body of the indoor fan on. Figure 3-30 Removing the tooling body of the indoor fan ----End 3.5 Connecting Pipelines Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 61: Exhausting Nitrogen
Step 1 Open the bonnet on the needle valve, connect the hose end with an ejector to the needle valve, and expel nitrogen. Figure 3-31 Position for exhausting nitrogen without configuring low-temperature component (1) Low pressure needle valve (2) High pressure needle valve Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 62: Pipeline Ports On The Indoor Unit
Ensure that pipes, power cables, and signal cables are routed correctly and through separate holes. ● Determine the number of the holes to avoid performance degradation due to unused holes. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 63 (2) Waterpipe inlet Φ50.0 (3) Cable port Φ50.0 (4) Port for liquid pipe of (5) Port for discharge pipe of refrigerant Φ80.0 refrigerant Φ80.0 Figure 3-34 Ports on the side panel (unit: mm) Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 65 30 < L ≤ 60 NO TE If the pipe is longer than 60 m, contact Huawei. The refrigerant pipes connecting the indoor unit and the outdoor unit are copper. Ball valves are reserved for the discharge pipes and liquid pipes.
Page 66 During the welding, avoid exposing the refrigerant pipes for over 15 minutes. Otherwise, system reliability is influenced. ● During the welding process, avoid burning the bottom plate and side panels, especially the heat insulation cotton, labels, water pipes, and cables. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 67: Connecting Water Pipes
A reducing valve must be installed if the inlet water pressure exceeds 700 kPa. Ensure that no large particles are in the water. Otherwise, install a filter at the water inlet. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 68: Charge Nitrogen
● If no low-temperature component is installed on the outdoor side, charge nitrogen into the system from the high pressure needle valve and low pressure needle valve at the same time. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 69 If low-temperature component is installed on the outdoor side, charge nitrogen into the system from the high pressure needle valve, low pressure needle valve, and liquid pipe needle valve at the same time. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 70: Electric Cable Connections
Power cable for the indoor unit ● Power cable for the outdoor unit ● Signal cable for the indoor unit ● Communications cable for the indoor unit ● Voltage jumper (only NetCol8000-A050) Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 71: Electrical Ports Of An Indoor Unit
Figure 3-41 NetCol8000-A050 external ports of the electrical control box (1) Main control board (2) Voltage jumper port (3) External cable terminal (4) General circuit breaker (5) Main PE bar (power port) Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 72 ● Route cables from the left holes with the rubber ring on the floor and to be fixed with cable ties. ● Cables inside the electrical control box should be fixed in cable trough. Cables outside the electrical control box should be fixed with cable ties. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 73: Connecting The Power Cable To The Indoor Unit
NetCol8000-A100 and NetCol8000-A050 are 84 A and 42 A respectively. The specifications of the general power cables for the two models are 5x25 mm and 5x16 mm respectively. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 74: Connecting The Voltage Jumper
Ensure that the voltage labeled on the voltage jumper is the same as of the local power supply. Then connect the two voltage jumpers. Figure 3-45 shows the voltage jumpers. 4 in Figure 3-42 shows the interconnection position. Figure 3-45 Voltage jumper 3.6.5 Connecting Signal Cables Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 75: Preparations Before Connecting Signal Cables
(4) Remote dry contact (5) Port for reporting high (6) Port for reporting low level level alarms alarms (7) Water leak sensor port (8) Smoke sensor port (9) Reserved port (reserved) Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 76 NetCol8000-A generates an alarm. Reserved Terminals 42 and 43 are for the reserved functions. port a: Make sure that the switch is off when the customer monitoring system or the screen is triggered. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 77: Connecting Outdoor Unit On/Off Signal Cable
Step 3 Use a cable tie to fix the cables on the cabinet. ----End 3.6.6 Teamwork Networking and Monitoring Context Teamwork communication ports 1 and 2 are used to enable the teamwork networking communication over CAN and EMS monitoring communication over Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 78 2 of the second unit to the teamwork communication port 1 of the third unit. All units that require teamwork can be connected in this way, as shown in Figure 3-50. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 79 Figure 3-52 defines the pins of a Y-split cable. Figure 3-53 shows the Y-split cable connection for teamwork control. Figure 3-51 Y-split cable Figure 3-52 Pin definition of a Y-split cable Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 80 ● You need to set only the seventh toggle switch based on site requirements and leave the rest of toggle switches in their default status listed in Table 3-13. Table 3-13 Operation description of the toggle switches Toggle Default Operation Switch Value Remaining "OFF". Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 81: Removing The Protective Device From The Netcol8000-A
NetCol8000- A100 lamp before connection. Procedure Step 1 Remove the screws, and slowly take out the sheet metal without damaging the cables, as shown in Figure 3-54. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 82: Connecting The Signal Cable To The Hwa Cable Terminal
Then arrange cables and bind them on the fix base of cable ties. NO TE Only NetCol8000-A100 needs to be connected onsite, NetCol8000-A050 has been connected before delivery. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 83 25 mm above the water pan bottom. However the automatic overfall gap may become loose or deviated from the water pan. Therefore, secure the automatic overfall gap to the bottom of the water pan bottom. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 84: Removing The Sheet Metals For Transporting The Compressor
3.7.3 Removing the Sheet Metals for Transporting the Compressor Prerequisites Remove the sheet metals for transporting the compressor. Procedure Step 1 Remove the sheet metals for transporting the compressor by using a 13# solid wrench. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 85: Installation Verification
● The cabinet is secured to the support by using bolts. ● The foreign matter inside the cabinet such as cable ties and stubs is cleaned up. Electric The electrical heater is secured. heater Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 86 ● The cable ties on the differential pressure tubes are secured. pressure ● There is no foreign matter in the differential pressure tubes. sensor The differential pressure tubes are not seriously bent. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 87 ● The power cables to the indoor and outdoor units and the signal cables between the indoor and outdoor units are connected properly. ● The rated values of circuit breakers are correct. ● All cables, connectors, and bolts are secured. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 88: Power-On Commissioning
3.6.3 Connecting the Power Cable to the Indoor Unit 3.6.5 Connecting Signal Cables. Ensure that the refrigerant pipes have passed the air tightness test and do not leak. 4.2 Vacuumization and Partially Charging in Refrigerant Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 89: Charging The Refrigerant And Refrigerant Oil
NO TE The calculation is used to single system. 4.2.2 Vacuumization Prerequisites ● Before vacuumization, ensure that all connectors are tightened and the ball valve of the cooling system is open. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 90 Step 2 Check whether the low-temperature component is installed on the outdoor side. ● If no low-temperature component is installed on the outdoor side, vacuumizing the cooling system from the high pressure needle valve and low pressure needle valve at the same time. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 91 If low-temperature component is installed on the outdoor side, vacuumizing the cooling system from the high pressure needle valve, low pressure needle valve, and liquid pipe needle valve at the same time. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 92 Step 6 Close the pressure gauge and vacuum pump. Preserve the pressure for 1 hour. The pressure should not be restored over 80 Pa. If the pressure gauge is restored obviously, locate the leakage and repair it. ----End Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 93: Procedure To Partially Charging In Refrigerant
Never move the pipe or steel vessel when charging in refrigerant. Otherwise, the value on the electronic balance is influenced. If the R410A refrigerant is provided by Huawei, put the refrigerant steel vessel upside down when charging in the refrigerant. If the refrigerant is not provided by Huawei, check with the refrigerant provider whether the steel vessel has a siphon.
Page 94 If low-temperature component is installed on the outdoor side, charging refrigerant into the system from the high pressure needle valve, low pressure needle valve, and liquid pipe needle valve at the same time. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 95: Commissioning
Step 5 Close the pressure gauge and the valve of the refrigerant cylinder after charging in refrigerant. ----End 4.3 Commissioning 4.3.1 Circuit Breakers Before commissioning the system, learn the functions and positions of circuit breakers. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 96 (6) Fan 2 circuit breaker QF4 (7) Reserved circuit breaker (8) Reserved circuit breaker (9) Condensate pump, heating belt circuit breaker QF9 (10) Transformer circuit (11) General power circuit breaker QF10 breaker QS Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 97: Commissioning Procedure
When checking the high water level switch, lift the high water level float manually, and check whether a high water level alarm is generated for the humidifier water pan. If an alarm is generated the high water level detection switch works properly. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 98: Check After The Commissioning
Step 6 Keep the system running for least 30 minutes and check if the unit works properly. ----End 4.4 Check After the Commissioning Table 4-2 Commissioning checklist Check Item Expected Result The controller exits the diagnostic mode. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 99 NetCol8000-A(050, 100) In-room Air Cooled Smart Cooling Product User Manual 4 Power-On Commissioning Check Item Expected Result All alarms are correctly set. The temperature, humidity, and control precision are properly set. All circuit breakers are on. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 100: Acc Introduction
You can tap the menu items, buttons, or icons on the screen to enter related screens or perform operations, such as Running, Alarms and Settings. The controller main screen is shown in Figure 5-1. Figure 5-1 Home screen Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 102: Menu Hierarchy
● Alarms Checks the active and historical alarms of the smart cooling product, and deletes the historical alarms. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 103: Quick Settings
For non-initial power-on, the LCD automatically enters the home screen as shown in Figure 5-1. Procedure Step 1 Set the language and tap Next, as shown by (1) in Figure 5-3. Figure 5-3 Quick settings Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 104: Initial Configuration
To prevent misoperation, log in as Operator users first before modifying parameters. Obtain permission from Huawei before modifying any parameter that you are not allowed to modify, otherwise, Huawei will not be liable for any consequences of the modification. Issue 12 (2020-10-28)
Page 105: Start And Shutdown
Figure 5-5. Tap Yes. If the device is successfully started or shut, the system displays a message, indicating that the command is successfully triggered. Figure 5-5 Start and shutdown Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 106: Setting Temperature And Humidity Values
Parameter Description Configuration Principle T/H control Return-air Return-air: For a hot aisle, select type Return-air to control the temperature and humidity around the air return vent of the smart cooling product. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 107: Setting Communications Parameters (Ip Settings)
Table 5-3 IP address settings Parameter Setting Method IP assigning Set according to the actual plan. mode IP address Set according to the actual plan. Subnet mask Set according to the actual plan. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 108: Setting Communications Parameters (Modbus Settings)
Table 5-4 Modbus RTU parameter settings Parameter Setting Setting Method Baud rate 9600, 19200 Set the baud rate as required. The value should be consistent with that set on the EMS. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 109 It is recommended that you retain the default number value. If you need to change the value, enter a value as required. This parameter is configurable when Link mode is set to Client. ----End Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 110: Setting Communications Parameters (Snmp Settings)
Step 3 Set Read Community and Write Community. Tap the text box after Read Community, as shown in Figure 5-10. Set Read Community as planned, tap , and then tap Submit. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 111 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. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 112 Set SHA Password and Confirm Password, and tap , as shown in Figure 5-13. Figure 5-13 Setting an SHA password Set AES Password and Confirm Password, and tap , as shown in Figure 5-14. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 113 SNMP Port is set to 161 by default. If you modify SNMP Port and tap Submit, a warning is displayed, indicating that the monitoring system will restart, as shown in Figure 5-16. Figure 5-16 Changing an SNMP port Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 114 USB flash drive for the customer's use in accessing a third-party EMS. Figure 5-18 shows successful file export. NO TICE Before using a USB flash drive, ensure that its data has been scanned by antivirus software and is secure. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 116 If the teamwork function is enabled, this device works in harmony with others that in the same group. Teamwor Smart Smart k mode Network Networking mode Networked over for the teamwork. CAN. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 119 01, 02, 03 Indicates the device address. 01 is the master one and the rest are all slave ones. NOTE If the master one offline, the teamwork networking failed. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 120 If no, check the cable connection and the settings of teamwork control parameters. Check whether the number of the active devices on the topology is the same as the actual device number. – If yes, go to 3. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 121: Optional) Setting Alarm Parameters
● If you need to change alarm settings, log in as the Admin or Engineer user. NO TICE Be careful when configuring alarms. Only professional maintenance personnel can change alarm settings. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 122: Commissioning Guide
If you need to manually turn on or off system components in diagnostic mode, log in as the Admin or Engineer user. Ensure that the smart cooling product is started before operation. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 123: Commissioning Smart Cooling Product Components
If you need to manually turn on or off system components in diagnostic mode, log in as the Admin or Engineer user. Ensure that the smart cooling product is started before operation. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 124: Querying Parameters
You can choose to display the curves showing data changes of recent one hour, one day, seven days, or 30 days. Procedure Step 1 On the home screen, tap T/H Curve. Figure 5-24 is displayed. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 125: Querying Alarms
Common Functions > Query Hist. Alarms or Alarms > Query Hist. Alarms. Procedure ● To query the active alarm, choose Alarms > Query Act. Alarms. Figure 5-25 is displayed. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 126 Some of the alarms can either be cleared automatically or manually. Perform operations as required. For details about how to manually clear an alarm, see 5.13 How to Manually Clear Alarms. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 127: Querying Logs
To query logs, log in as the Admin, Engineer, or Operator user. Procedure Step 1 On the home screen, choose Maint > Log Maint > Query Logs. Figure 5-28 displayed. Figure 5-28 Query logs screen ----End Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 128: Querying Device Runtime
Functions > Status or Running > Status on the home screen. The general component status screen is displayed. Figure 5-30 shows the screen displayed after choosing Running > Status. Figure 5-30 General status Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 129: Querying System Parameters
When querying system parameters through Operating Info, choose Common Functions > Operating Info, or Running > Operating Info on the home screen, the related screen is displayed. Figure 5-32 shows the screen displayed after choosing Running > Operating Info. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 130: Querying Version Details
Figure 5-33. Figure 5-33 Compressor parameters 5.6.7 Querying Version Details Procedure Step 1 On the home screen, select About. Figure 5-34 is displayed. Figure 5-34 About screen Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 131: Changing Parameters
Procedure Step 1 On the home screen, choose Alarms > Delete Hist. Alarms to enter the Delete Hist. Alarms screen shown in Figure 5-36. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 132: Deleting Logs
Active alarms, historical alarms, logs, configurations, and run logs can be exported. The export method for the five data is the same. This section uses how to exporting active alarms as an example to explain the operation method. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 133 Step 2 Tap the file where the user saves active alarms in the Select Path dialog box and tap Next. Then tap Yes in the displayed dialog box shown in Figure 5-38. Enter the Processing Info screen shown in Figure 5-39. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 134 Tap OK. Figure 5-40 Screen showing that data export has succeeded Step 4 Tap Maint > USB Operations > Remove USB to remove the USB flash drive in safe mode. ----End Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 135: Clearing The Runtime
2°C, and the calibration value should be set to –2°C. ● To calibrate a sensor, log in as the Admin or Engineer user. Procedure Step 1 On the home screen, choose Maint > Sensor Adjust. Figure 5-42 is displayed. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 136: Calibrating The Screen
When calibrating the screen by tapping the screen, on the home screen, tap Maint > Screen Calib to enter the following screen, as shown in Figure 5-43. Figure 5-44 is displayed when the screen calibration is complete. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 137 If you do not click Yes or No, calibration will start automatically 10 seconds later. is displayed, as shown in Figure 5-45. Figure 5-45 Confirming to calibrate the screen Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 138: How To Perform Quick Settings
● To set the preceding parameters, log in as the Admin, Engineer, or Operator user. Procedure Step 1 On the home screen, choose Settings > User Settings. Figure 5-46 is displayed. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 139: How To Change A Password
Step 2 Tap Password to enter the password changing screen, as shown in Figure 5-48. NO TE It is recommended that the password should contain at least two types of characters. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 140: How To Restore The Initial Password
Step 2 Set bits 1 and 3 of the DIP switch S2 to ON, and other bits to non ON. Figure 5-49 shows positions of DIP switches on the main control board. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 141: How To Troubleshoot The Fault When The System Is In Upgrade Mode
The display board and control board software versions are incompatible. Entering the upgrade mode... In upgrade mode, you can only view the system version information. In this case, perform the following steps for troubleshooting. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 142: How To Manually Clear Alarms
E-label board, and then power on the system. Step 3 If the fault persists, contact Huawei technical support. ----End 5.13 How to Manually Clear Alarms Context ●...
Page 143: How To Enable A Humidity And Temperature Sensor
Figure 5-51 Enabling a humidity and temperature sensor ----End 5.15 How to View Teamwork Control Information Procedure Step 1 On the home screen, choose > . The teamwork control information is displayed, as shown in Figure 5-52. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 144: Which Parameters Are Restored To Default Values After Default Settings Are Operated
After default settings are restored, all communication addresses are changed to 1 and the communication between all devices and the EMS is disconnected. The communication addresses must be reset to recover the communication. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 145: How To Change The Ssh Access Password
Step 2 Specify User name and Password. The preset user name and password are enspire and Changeme respectively, as shown in Figure 5-53. Figure 5-53 Entering the user name and password Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 146 Figure 5-54 Switching to the root user Step 4 Enter passwd (the password change command) to change the password. In the displayed window, enter a new password and confirm it, as shown in Figure 5-55. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 147: Rectifying Faults Of The E-Label Identification Board
● If the information shown in Figure 5-56 is displayed on the controller LCD, the smart cooling product can run properly. To remove this tip, perform Step Figure 5-56 Message 1 Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 148: How To Import A Certificate And Key
● If yes, continue with Step Step 4 Check whether cables are properly connected. ● If yes, contact Huawei technical support to replace the E-label identification board. ● If no, reconnect or replace cables and perform Step Step 5 Reconnect the main power supply of the smart cooling product.
Page 149 Step 3 Select CA certificate file to be imported. Step 4 Upload local certificate file and key file in turn in the same way. Step 5 Enter Key password and Confirm key password. Step 6 Tap Submit. ----End Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 150: Faq
-> is the setting after change. NO TE The log query screen displays logs of LCD user operations, including user login and setting change records. Figure 6-1 Query Logs Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 151: System Operation And Maintenance
Pay attention to the safety symbols on the equipment and all safety instructions in this document. The safety precautions given in this document do not cover all safety precautions. Huawei will not be liable for any consequence caused by violation of the safety operation regulations and design, production, and usage standards.
Page 152: Filters
Check whether the air Replace the air filters. Perform the filter is damaged or operations with deformed. the power off. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 153: Indoor Fans
Check that no foreign matter Clean the foreign Perform the exists in the fans. matters. operations with the power off. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 155: Infrared Humidifier
1/3 with the of the power on. humidifier, refer 7.4.4 Replacing the Infrared Humidifier Lamps remove the water inlet valve to check whether there are blockages. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 157 (5) Automatic reset (6) Water inlet switch for dry heating temperature switch for dry protection heating protection (7) Infrared humidifier lamp (8) Topside overheat (9) High water level detection temperature switch switch Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 158: Electrical Heaters
Check for corrosion on the Replace the heater by Perform the heater surface. You can referring to 7.4.5 Replacing operations remove the rust using a Electrical Heaters. with the metal brush. power off. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 159: Other Cooling System Components
Suction pressure should range from 0.7 MPa to 1.2 MPa. Suction Superheat Degree A suction superheat degree has impact on the compressor service life. A compressor permanently running at a very low or no overheat degree would Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 160 If you find air bubbles with the sight glass, the cooling system lacks refrigerant. Adjust the expansion valve or fill in refrigerant. Refrigerant Pipe Maintain the refrigerant pipe as follows: Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 162 Keep the sensors far away from drain traps or floor drains and 2 m to 2.5 m away from the NetCol8000-A. Do not install the sensors directly under the NetCol8000-A. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 163 NetCol8000-A(050, 100) In-room Air Cooled Smart Cooling Product User Manual 7 System Operation and Maintenance Figure 7-4 Positions for installing Water sensors (1) Indoor unit (2) Water sensors (3) Floor drainpipe Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 164: Alarm Reference
2. The T/H sensor is replace the during faulty. T/H sensor. normal communic ation, or the sensor on the temperatu re and humidity collection board fails communic ate when the alarm detection delay expires. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 165 For details temperatu about how to re reading calibrate the is valid sensor, see 5.7.5 greater Calibrating a than the Sensor. high temperatu re alarm threshold when the alarm detection delay expires.. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 166 5.7.5 temperatu Calibrating a re reading Sensor. is valid and less than the temperatu re alarm threshold when the alarm detection delay expires. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 167 4. The humidity T/H sensor. communication collection port of the control 4. Maintain or board board is faulty. replace the when the control board. alarm detection delay expires. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 168 7. The solenoid valve replace the is faulty. high press 8. The refrigerant is switch. overfilled. 7. Maintain or replace the solenoid coil or the solenoid valve. 8. Decrease certain amount of refrigerant. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 169 HP triggered alarm. six high pressure alarms within consecutiv e hour, or compresso r high pressure alarm is cleared within 10 minutes. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 170 4. Maintain or replace the low pressure switch. 5. Maintain or replace the dryer filter. 6. Maintain or replace the expansion valve. 7. Maintain or replace the indoor fans. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 171 LP triggered alarm. six low pressure protection s within consecutiv e hour, or compresso r low pressure alarm has cleared within 30 minutes. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 172 5. Outdoor fans are 4. Check cables faulty. to the 6. The condenser fins discharge are blocked. temperature switch. 5. Maintain or replace the discharge temperature switch. 6. Maintain or replace the outdoor units. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 173 10 times which leads to the support. during the comp starting and monitored stopping period, frequently. and each running period is less than 1.5 times of the shortest configure d running period. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 175 4. Temperature filter switches. switches are faulty. clogging 4. Maintain or switch is replace the closed humidifier and does temperature switches. recover for N s. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 176 5. The indoor fans are 4. Reset the faulty. manual reset recover temperature for N s. switch. 5. Maintain or replace the indoor fans. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 177 4. Maintain or 5. Cables to the replace the differential differential pressure switch are pressure tube. loose or damaged. 5. Check cables to the differential pressure switch. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 178 NetCol800 0-A state. If a cold reset is required, this alarm generated. If a hot reset is required, this alarm is not generated. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 179 3. Correctly set alarm connected. the toggle detection 3. If a toggle switch is switch. delay used, possibly it is expires. incorrectly set. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 180 3. Correctly set voltage connected. the toggle alarm 3. If a toggle switch is switch. threshold used, possibly it is when the incorrectly set. alarm detection delay expires. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 181 2. The surge 2. Replace the than the protection and surge filtering board is protection frequency faulty. and filtering alarm board. threshold when the alarm detection delay expires. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 182 2. The cables to the different remote shutdown 2. Check the from the dry contact is cables to the preset faulty. remote polarity. shutdown dry contact. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 183 5. The master unit is as the master master powered off. unit. and a slave unit 5. Power on the have the master unit, same or configure address. another unit as the master unit. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 184 SPD. SPD are loose or board damaged. 2. Check the fault cables to the 3. The port of the SPD. control board is faulty. 3. Maintain or replace the control board. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 185 B. loose, aged, or reports disconnected. 2. Maintain or that the replace the switch fuse. polarity is different from the preset polarity when the alarm detection delay expires. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 186 D. loose, aged, or that the disconnected. 2. Maintain or switch replace the polarity is fuse. different from the preset polarity when the alarm detection delay expires. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 187 4. The humidity threshold displayed is 4. Calibrate or when the different from the replace the alarm actual humidity. abnormal T/H detection sensors. delay expires 90s after a fan startup signal is sent. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 188: Troubleshooting
Check the fixing structure generates abnormal are loose. and ensure that all voice. components are securely installed. A compressor does The high pressure switch Check the high pressure not work. reacts. switch status. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 189 The compressor Refrigerant is insufficient. Add more refrigerant. suction pressure is The indoor temperature is Increase the temperature too low or liquid set too low. setting. returns. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 190 Check the thermal overload by a thermal overload relay status and the fan relay. current. An indoor fan is protected Check the high- by an internal high- temperature protection temperature guard. switch status. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 191 The airflow loss switch is Check whether the airflow faulty, or the electrical loss switch is properly heater circuit breaker is off. connected. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 192: Parts Replacement
After replacing any part, verify that the new part works properly. 7.4.1 Replacing the Filters Context Figure 7-5 shows the positions of filters in the indoor unit. They are numbered 1 and 2. Figure 7-5 Filter positions Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 193: Replacing An Indoor Fan
Step 3 Remove the fan mounting beam from the fan mounting base. Step 4 Use a Phillips screwdriver to remove the four screws securing the fan net cover to the fan, and remove the fan net cover and deflector. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 194 Step 9 Lift the indoor fan and remove the fan tooling beam. Step 10 Drag the indoor fan out of the unit. Figure 7-7 Replacing an indoor fan Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 195 After removing the fan cover, turn the fan upside down with caution. Figure 7-8 Removing the fan cover Step 12 Remove the four screws on the motor control box at the bottom of the fan using a 5x200 mm flat-head screwdriver. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 196 Figure 7-10 Motor control box Step 14 Remove the eight screws securing the fan to the bottom plate using an adjustable wrench, pull up the fan cover, and take out the fan. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 197: Replacing A Compressor
(to be prepared onsite), LOCTITE 554 glue (optional), a new compressor, and a new dryer filter. Context D ANGER When replacing a compressor, avoid skin contact with the refrigerant or lubricant to prevent frostbite or burns. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 198 Step 6 Blow away dirt with nitrogen, check the dry filter, and replace it if necessary to protect pipes from foreign matter. Remove the interfaces at both ends of the dry filter with a welding gun, and take out the dry filter and its pipe sections. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 199 Install a new dry filter in reverse order. And solder new the dry filter to the original position on the pipe. Step 7 Install a new compressor, vacuumize the system, and partially inject refrigerant. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 200: Replacing The Infrared Humidifier Lamps
Recommended tools and materials for replacing a lamp: a Phillips screwdriver, an adjustable wrench, a 3# hex key, combination pliers, and a new lamp Step 1 Disconnect the power supply, close the water inlet for the infrared humidifier. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 201 Figure 7-17 Removing the float sheet metal Step 5 Remove the four wiring terminals connecting the manual and automatic reset switches at the bottom of the water pan using combination pliers. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 202 Loosen the bolts of the damaged lamp tube from the ceramic terminal block by using hex key while holding the ends of the lamp tube with hands. Step 7 Take out the lamp tube and install a new one. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 203 Figure 7-20 Removing drainpipe and screws on the right side of infrared humidifier Step 4 Remove the two butterfly buts on the left, and pull out the water pan horizontally from the left side. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 204 Step 2 Pull out the wiring terminals on the solenoid valve control cable using combination pliers, and remove the screws that secure the water injection solenoid valve to the baffle plate. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 205 Then remove the water injection solenoid valve. NO TICE Keep the connection nuts aside for reinstallation purpose. Apply yellow glue to the nut of the water inlet pipe, and install the solenoid valve. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 206: Replacing Electrical Heaters
● The electrical heater rack is inside the NetCol8000-A. Exercise caution during maintenance to prevent internal components from scratches or damage. Procedure Step 1 Disconnect the power supply. Step 2 Disconnect the cables from the electrical heater. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 207 Make sure they work properly. Exit the Diagnostic Mode. Step 6 Tap Maint > Performance Maint to clear the electric heater total runtime. Figure 7-24 Replacing an electrical heater (bottom view) (1) Temperature switch (2) Electrical heater ----End Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 208: A Support Specifications
Please note that to control the welding process and avoid excessive error. Φ = 43 mm appeared in the above figures indicate the inside diameter with the rubber ring. Figure A-1 Figure A-2 show the support specifications. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 209 NetCol8000-A(050, 100) In-room Air Cooled Smart Cooling Product User Manual A Support Specifications Figure A-1 Support specifications of NetCol8000-A050 (unit: mm) Figure A-2 Support specifications of NetCol8000-A100 (unit: mm) Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 210: B Electrical Control Boxes
(18) Control terminals (19) Surge protection and (20) General power circuit (21) Ground bar PE filtering board Filter breaker QS Figure B-2 shows the structure of the NetCol8000-A100 EC electric control box. Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 211 (25) Fan 2 power supply (26) Control terminals (27) Water pump, N wire contactor QC11 transfer terminal of the transformer (28) Ground bar PE (29) Power cable clamp (30) General power circuit breaker QS Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 212: C Acronyms And Abbreviations
C Acronyms and Abbreviations Acronyms and Abbreviations Alternating Current Control Area Network Computational Fluid Dynamics Electronic Commutation GPRS General Packet Radio Service Liquid Crystal Display LCD User Interface Thin Film Transistor Positive Temperature Coefficient Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 213: D Electrical Schematic Diagram (Netcol8000-A050)
NetCol8000-A(050, 100) In-room Air Cooled Smart Cooling Product User Manual D Electrical Schematic Diagram (NetCol8000-A050) Electrical Schematic Diagram (NetCol8000-A050) Figure D-1 Electrical Schematic Diagram Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 214: E Electrical Schematic Diagram (Netcol8000-A100)
NetCol8000-A(050, 100) In-room Air Cooled Smart Cooling Product User Manual E Electrical Schematic Diagram (NetCol8000-A100) Electrical Schematic Diagram (NetCol8000-A100) Figure E-1 Electrical Schematic Diagram Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.
Page 215: F Controller Menu Structure
NetCol8000-A(050, 100) In-room Air Cooled Smart Cooling Product User Manual F Controller Menu Structure Controller Menu Structure Figure F-1 Controller Menu Structure Issue 12 (2020-10-28) Copyright © Huawei Technologies Co., Ltd.

Huawei NetCol8000-A Series User Manual

About this Document

1 Safety Information

2 Product Description

3 Installation Guide

4 Power-On Commissioning

5 ACC Introduction

6 Faq

7 System Operation and Maintenance

A Support Specifications

B Electrical Control Boxes

C Acronyms and Abbreviations

D Electrical Schematic Diagram (Netcol8000-A050)

E Electrical Schematic Diagram (Netcol8000-A100)

F Controller Menu Structure

Quick Links

Related Manuals for Huawei NetCol8000-A Series

Summary of Contents for Huawei NetCol8000-A Series

Table of Contents