Huawei NetCol5000-C In-row Chilled Water Smart Cooling Product User Guide

HUAWEI NetCol5000-C In-row Chilled Water Smart Cooling Product

NOTICE

  • The information in this document is subject to change due to version upgrade or other reasons. Every effort has been made in the preparation of this document to ensure accuracy of the contents, but all statements, information, and recommendations in this document do not constitute a warranty of any kind, express or implied.
  • Only qualified or trained technical personnel are allowed to perform operations on the device. Operation personnel should understand the composition and working principles of the smart cooling system and local regulations.
  • Before installing the device, read the user manual carefully to get familiar with product information and safety precautions. Huawei shall not be liable for any consequence caused by violation of the storage, transportation, installation, and operation regulations specified in this document and the user manual.
  • Use insulated tools when installing the device. For personal safety, wear proper personal protective equipment (PPE).

Overview

Model NetCol5000-C030 NetCol5000-C032 NetCol5000-C065
Power system 220 V AC to 240 V AC, 1 Ph, 50/60 Hz, dual power supplies
Cooling capacity 30 kW 32 kW 65 kW
Maximum operating current 9.5 A 9.5 A 15 A
Dimension (mm) (H x W x D) 2000 x 300 x 1200 2200 x 600 x 1200 2000 x 600 x 1200
Optional components Water pump, wet film humidifier, and micro differential pressure sensor
Note Top or bottom pipe routing Bottom pipe routing only Top or bottom pipe routing
NetCol5000-C030/C032

(Bottom Pipe Routing)

 NetCol5000-C065

(Bottom Pipe Routing)

NOTE
The position of the differential pressure switch is for reference only. For some models, it is close to the T/H sensor.

Preparing Materials

Materials Delivered Obtain the materials listed in the packing list from the accessories delivered with the product.
 

 

 

 

 

Engineering

Procurement

  

 

 

 

Drainpipe

 Choose rigid pipe connection or hose connection based on the actual application scenario. The NetCol5000-C065 (top or bottom pipe routing) supports only hose connection if bottom pipe routing is adopted.

l  BSPT 1/2–inch hose connector with external threads, and hose (made of EPDM or other materials)

l  BSPT 1/2-inch rigid pipe connector with external threads, and rigid pipe (made of PP-R or other materials)

Humidifier water inlet pipe (optional) Rigid pipe: G 3/4-inch rigid pipe connector with internal threads (plastic materials such as PA66, or metal materials are recommended), and rigid pipe (withstand pressure ≥

0.7 MPa)

 

 

 

 

 

 

 

Engineering Procurement

  

 

Chilled water inlet and outlet pipes

 NetCol5000-C030/C032: Seamless steel pipe with a G 1 inch external threaded connector or aluminum plastic pipe with an inner diameter of 26 mm (withstand pressure ≥ 1.6 MPa)

NetCol5000-C065: Seamless steel pipe with a G 1–1/2 inch external threaded connector or aluminum plastic pipe with an inner diameter of 41 mm.

 

 

Cables

 NetCol5000-C030/C032: Power cable (3 x 2.5 mm²), teamwork networking and monitoring cables, and equipotential cable (≥ 16 mm²)

NetCol5000-C065: Power cable (3 x 6.0 mm²), teamwork networking and monitoring cables, and equipotential cable (≥ 16 mm²)

Others Base, thermal insulation foam, and thermal insulation foam glue

Base

NOTE

  1. Shock absorption bars (EPDM rubber, 5 mm thick) need to be installed between the ground and the base.
  2. The base should be at least 250 mm in height.
  3. You are advised to use angle steel. Thickness of 5 mm is recommended.

Holes in Top and Bottom Plates

Installing the Equipment

NOTICE

  1. The unit in this document is a fully configured NetCol5000-C. If some components are not configured, skip the corresponding steps.
  2. You are recommended to use tools that are fully insulated when installing devices.
  3. Only qualified or trained technical personnel are allowed to install, commission, and maintain smart cooling products. Otherwise, personal injuries and device damage may be caused, which is beyond the smart cooling product warranty range.

Removing Air Filters

Discharging Nitrogen

NOTICE

  1. The equipment has been injected with 0.2–0.6 MPa of nitrogen before delivery. If no nitrogen is discharged, contact Huawei technical support.
  2. You can open or close the exhaust valve using a flat-head screwdriver.

Removing the Pallet

(Optional) Removing 3.4 Side Plates

(Optional) Moving the Cabinet

This section only applies to the NetCol5000-C030/032.
Four to six persons are required to move the cabinet to the installation position. After that, install the side plates.

Leveling the Cabinet

Combining Cabinets

Securing the Equipment

Installing Pipes

Pipe Layout

NOTICE

  1. A 1:100 tilt should be reserved for the main drainpipe and humidifier water inlet pipe.
  2. Keep a clearance of at least 25 mm between pipes. Secure the pipes to supports every a certain distance.
  3. Clean the water inlet engineering pipes to avoid impurities entering into the humidifier.
  4. A reducing valve must be installed if the inlet water pressure exceeds 0.7 MPa.
  5. Pipes should be wrapped with thermal insulation foam along the route.
  6. When routing pipes from the top, take protective measures to prevent pipe leakage from affecting servers or other devices.

  1. Chilled water inlet pipe
  2. Chilled water outlet pipe
  3. Drainpipe
  4. Humidifier water inlet pipe

  1. Chilled water inlet pipe
  2. Chilled water outlet pipe
  3. Drainpipe
  4. Humidifier water inlet pipe

Installing a Drainpipe

Installing a Humidifier Water Inlet Pipe
Clean the engineering pipe, connect the reserved humidifier water inlet pipe to the engineering pipe, and wrap the pipe with thermal insulation foam.

Installing Chilled Water Inlet and Outlet Pipes

Connect pipes.

  1. G 1–1/2 inch inner thread connector (reserved)
  2. Straight male connector
  3. Gasket
  4. Nut
  5. Aluminum-plastic pipe with an inner diameter of 41 mm

  1. G 1–1/2 inch inner thread connector (reserved)
  2. G 1–1/2 inch seamless steel pipe with external threads

Wrap the pipes with thermal insulation foam.

(Optional) Leakage Test with Nitrogen

NOTICE

  • If the pressure has fallen, apply soapy water on the pipes, especially at pipe joints, to check for leakages. Rectify the leakages if any.
  • If the pressure is stable, wrap all pipes and connectors with thermal insulation foam.
  • Install a reducing valve on the outlet of the nitrogen cylinder. Its outlet pressure must not exceed 0.8 MPa.
  • In addition to the leakage test with nitrogen, there is the leakage test with water. You can choose one test based on site requirements.
  1. Rotate the chilled water valve to the maximum (100%).
  2. Check that the needle and exhaust valves on the pipeline are closed.
  3. Connect a reducing valve and a nitrogen cylinder at the needle valve position shown in the figure, charge 0.8 MPa of nitrogen (when the pressure is stable), and leave them for 24 hours.
  4. Check for pressure change after 24 hours.

Injecting Water to Expel Nitrogen

NOTICE
Clean the main pipe beforehand to avoid blockage of the heat exchanger due to foreign construction matter. Close the isolation valve on the water inlet and outlet pipes before the cleaning.

  1. Open the general water supply valve.
  2. Press the button on the side of the actuator and manually rotate the valve handle to the maximum in the specified direction. Check that the chilled water valve is in the open state (100%).
  3. Slowly open the exhaust valve to let out gas.
  4. Adjust the gas releasing speed until no gas flows out of the valve. Then close the exhaust valve.
  5. Manually close the chilled water valve.

(Optional) Leakage Test with Water
Manually open the chilled water valve. Inject water to 0.8 MPa, and preserve the pressure for 24 hours. Then connect a pressure gauge to a needle valve on the pipeline to measure the pressure. If the reading remains unchanged, the pipe is not leaking. You can perform the following operations.

Installing Cables

Connecting the Equipotential Ground Cable and Power Cable

NOTICE

  1. When routing the cables, wrap the section of all signal cables inside the smart cooling product with the corrugated pipes and route them out of the corresponding cable holes so that the electric and ELV cables are separated.
  2. Route the power cable along the rear door post, and use cable ties to secure the cable to the post every 150–200 mm.

(Optional) Installing a Micro 5.2 Differential Pressure Sensor

Cold aisle
Connect a pressure inlet tube to the + mark and route it to the aisle through the hole on the top of the cabinet. Ensure that the pressure inlet faces downwards. Connect another pressure inlet tube to the – mark and route it to the cabinet top through the hole atop.

Hot aisle
Connect a pressure inlet tube to the + mark and route it to the cabinet top through the hole atop. Connect another pressure inlet tube to the – mark and route it to the aisle through the hole on the top of the cabinet. Ensure that the pressure inlet faces downwards. Connect the cable terminal of the micro differential pressure sensor to the DPT terminal.

(Optional) Connecting a Water 5.3 Sensor
A water sensor monitors resistance changes at terminals to determine whether the floor is watery. When the terminals of a water sensor detect water or other conductive liquid, the resistance between the two terminals decreases. Keep water sensors far away from water traps or floor drains.

(Optional) Installing T/H Sensors Outside Cabinets
Connect T/H sensor cables.
T/H sensors in the aisle should be installed at the door frame inside the IT cabinet and 1.5 m above the ground (33 U). After they are secured, set the sensor positions based on their locations and the table.

Set the DIP switches on the T/H sensors.

 

Name

  

Address

 DIP Switch ID
1 2 3 4 5 6
Cold aisle 1 temp/humid 11 ON ON OFF ON OFF OFF
Cold aisle 2 temp/humid 12 OFF OFF ON ON OFF OFF
Cold aisle 3 temp/humid 13 ON OFF ON ON OFF OFF
Cold aisle 4 temp/humid 14 OFF ON ON ON OFF OFF
Cold aisle 5 temp/humid 15 ON ON ON ON OFF OFF
Hot aisle 1 temp/humid 21 ON OFF ON OFF ON OFF
Hot aisle 2 temp/humid 22 OFF ON ON OFF ON OFF
Hot aisle 3 temp/humid 23 ON ON ON OFF ON OFF
Hot aisle 4 temp/humid 24 OFF OFF OFF ON ON OFF
Hot aisle 5 temp/humid 25 ON OFF OFF ON ON OFF

(Optional) Connecting the Teamwork Network Cable

  1. T/H_1 (T/H RS485 communications port) (used for connecting to the external T/H sensor)
  2. T/H_2 (T/H RS485 communications port) (used for connecting to the external T/H sensor)
  3. CAN_IN/CAN_OUT/FE_IN/FE_OUT (used for teamwork networking)
  4. COM_IN (RS485 communications port) (used for connecting to the monitoring system)
  5. COM_OUT (RS485 communications port) (used for connecting to the monitoring system)
  6. FE (used for connecting to the monitoring system)
  7. USB

The smart cooling product supports both FE teamwork networking and CAN teamwork networking (hand-in-hand).

Connecting an FE Teamwork Network Cable

NOTE

  • All smart cooling products in a teamwork group must be of the same model.
  • Do not directly connect the first and the last smart cooling products to form a ring network.
  • A maximum of 32 smart cooling products can be networked in one group. The teamwork cable between two adjacent smart cooling products must not exceed 10 m.
  • If CAN networking is required onsite, choose Teamwork Settings and set Enable teamwork CAN resistor for the first and last smart cooling products to Yes on the screen.

Connect one end of the FE network cable to the FE_IN port on the main control module, and connect the other end to the POE port on the smart ETH gateway.

CAN Teamwork Networking Cable

  1. Prepare an 8-pin standard network cable. The cable pin sequence requirements are shown below.
  2. Connect the CAN_OUT port of each smart cooling product to the CAN_IN port of the following smart cooling product using a CAN network cable. After powering on the device, set Enable teamwork CAN resistor to Yes for the first and last devices in a teamwork group.

(Optional) Connecting the Monitoring Network Cable
The smart cooling product supports both RS485 monitoring and FE monitoring.

Connecting the FE monitoring Cable (SNMP/Modbus-TCP Protocol)
Modbus-TCP (connecting to the smart ETH gateway): The same network cable is used for FE monitoring and FE teamwork control. SNMP: Connect the FE monitoring network cable to the FE port.

RS485 Monitoring Network Cable (Modbus-RTU Protocol)

  1. Make the COM network cable by referring to the following figure.
  2. Group smart cooling products for monitoring based on performance requirements and connect the monitoring network cables.
  • If there is no teamwork control, connect the COM_IN port on each smart cooling product to the customer’s monitoring system.
  • In CAN networking, connect the COM_IN port on the first smart cooling product in each monitoring group to the monitoring device.

Verifying the Installation

No. Check Item Check Result
1 All water pipes are properly and securely installed, and free from leakage, blockage, and sharp turns. □ Passed □ Failed
 

2

 The liquid level detector is level. The water pan is free from foreign matter such as cable remains and thermal insulation foam. Cables are securely bound and not in the water pan.  

□ Passed □ Failed

 

3

 The distance between two chilled water pipes outside the cabinet is sufficient (recommended distance: longer than 25 mm), the hose is tightly wrapped with insulation foam, and joints are secured using glue.  

□ Passed □ Failed

4 The pipeline system has passed the pressure preservation and air tightness tests. □ Passed □ Failed
5 The needle valve plugs are secured (torque of 0.45±0.05 N•m), and screw caps are tightened. □ Passed □ Failed
6 The cabinet is reliably grounded. □ Passed □ Failed
7 The power cables and signal cables are correctly connected and

properly separated. Electric and ELV cables are separately bound.

 □ Passed □ Failed
 

 

8

 The chilled water valve and its actuator are securely installed. The chilled water connector joints have been wrapped with thermal insulation foam, and no metal or hose is exposed. Cables are securely connected to the chilled water valve actuator. The actuator manual button is reset (ejected state).  

 

□ Passed □ Failed

System Power-On

Power-On

  1. Turn on the smart cooling product switch in the power distribution cabinet and the AC1 and AC2 switches on the smart cooling product.
  2. After the device is powered on for the first time, the LCD displays the Quick Settings screen. Set parameters as instructed, such as language, date format, date, time, and time zone. If the device is not powered on for the first time, the home screen is displayed.
  • Users are classified into admin and operator. The preset password is 000001 for both types of users.
  • After powering on, the smart cooling product is in shutdown mode.

(Optional) Setting the T/H Control Type

Application Scenario Recommended T/H Control Type Remarks
Cold aisle containment Cold aisle control If cold aisle T/H sensors are not configured, you can also choose the supply air control.
Hot aisle containment Cold aisle control
Non-aisle containment Return air control If cold aisle T/H sensors are configured, you can also choose the cold aisle control.

Path: Settings > System Settings > Common Settings or Settings > System Settings > T/H Sensor

(Optional) Enabling the T/H Sensor Outside the Cabinet
If a T/H sensor outside the cabinet is installed, enable it. Path: Settings > System Settings > Common Settings or Settings > System Settings > T/H Sensor

Temperature and Humidity Settings
Set Temperature and humidity control type, Control point temperature setpoint, and Control point humidity setpoint as required on site. Path: Settings > System Settings > Common Settings or Settings > System Settings > T/H Sensor

(Optional) Setting the Indoor Fan Control Type
If a micro differential pressure sensor is installed and the pressure difference control is required, set Air-side difference pressure sensor type to 0–50 Pa, and set Indoor fan control type to Pressure diff ctrl. It is recommended that the default value be retained for Indoor fan pressure difference setpoint. If there are hot spots onsite, you can increase the value. Path: Settings > System Settings > Indoor fan

(Optional) Teamwork Settings
On the home screen, choose > Teamwork Settings. The following uses a teamwork group consisting of eight devices as an example.

Item Setting Setting Rule
No. 1 2 … 7 8 Smart cooling product No.
 

 

Teamwork group No.

  

 

1

  

 

1

  

 

…

  

 

1

  

 

1

 A teamwork network can contain a maximum of four groups, which can be numbered 1 to 4 respectively.

Smart cooling products in a group must have the same teamwork group number.

 

System address

  

1

  

2

  

…

  

7

  

8

 In a teamwork group, the address (1–

32) of each unit must be unique and the unit with the smallest address is the master unit.

Enable teamwork CAN resistor  

Yes

  

No

  

…

  

No

  

Yes

 This parameter needs to be set in CAN networking. Set it to Yes for the first and last units.
Teamwork function Enable Enable … Enable Enable /
 

 

Networking mode

 CAN

network

 CAN

network

 … CAN

network

 CAN

network

 The networking mode selected on the screen must be consistent with the actual networking mode.

The MAC_CAN network and FE network are the same teamwork networking mode. The displayed value prevails.

MAC_CA N

network or FE network

 MAC_CA N

network or FE network

  

 

…

 MAC_CA N

network or FE network

 MAC_CA N

network or FE network

Number of systems in this group  

8

  

/

  

…

  

/

  

/

  

The value ranges from 1 to 32.

Number of running systems in this group  

 

6

  

 

/

  

 

…

  

 

/

  

 

/

 The value ranges from 1 to the number of units in the group. Except the running units in the group, other units in the group are used as standby units.
 

Rotation function

  

 

Enable

  

 

/

  

 

…

  

 

/

  

 

/

 When the rotation function is enabled, the running and standby units can work alternately. It is recommended that the function be enabled when the load is even.

Startup and Wizard Startup

First startup flowchart
Offline Boot or Online Boot can be selected for the first startup.

NOTICE

  • 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.
  • If this is not the first startup, choose Maint > Wizard Startup to enter wizard startup.
  • If no humidifier is configured, its commissioning item is not displayed.

Wizard startup flowchart

NOTICE

  • If the floor water overflow alarm is generated, the smart cooling product will shut down by default. If you do not need to stop the smart cooling product, contact Huawei technical support engineers to evaluate the risk. After the risk is evaluated, choose Settings > System Settings > System Control, and set the Water overflow alarm action to Inactivity or Only indoor fan running or Humidification stopped.
  • If the in-cabinet water overflow alarm is generated, the humidifier will stop by default. If you do not need to stop the humidifier, contact Huawei technical support engineers to evaluate the risk. After the risk is accepted, choose Settings > System Settings > System Control, and set the Water overflow alarm action to No action or Only the indoor fan running or Shutdown.

Checking After Commissioning

Check Item Result
The controller exits diagnostic mode. □ Passed □ Failed
The temperature and humidity are correctly set. □ Passed □ Failed
The chilled water valve is closed. □ Passed □ Failed

Power-Off

  1. Tap Shutdown on the LCD home screen.
  2. Turn off all switches of the smart cooling product.
  3. If the smart cooling product will not be used over a long time, drain the water in the heat exchanger or take antifreeze measures to avoid frost cracks.

Appendix: Precautions for Adding Glycol

To prevent glycol solution from corroding pipes and the heat exchanging coil, corrosion inhibitor should be mixed into the glycol solution. For details about the mixing schemes, consult glycol experts.

Huawei Technologies Co., Ltd.
Huawei Industrial Base, Bantian, Longgang Shenzhen 518129 People’s Republic of China www.huawei.com