Huawei NetCol8000-C (070 130 190) In-room Chilled Water Smart Cooling Product User Guide

NetCol8000-C (070 130 190) In-room
Chilled Water Smart Cooling Product
User Guide

Issue: 04
Part Number: 31500CWQ
Date: 2021-12-30
HUAWEI TECHNOLOGIES CO., LTD.

Product Overview

Product Model Pipe Routing Dimensions Without Packing (H x W x D) (mm)
NetCol8000-C070 Upflow: routed from
bottom or side
Downflow: routed from
bottom		 2000 x 900 x 1000 (single-door)
NetCol8000-C130 2000 x 1800 x 1000 (double-door)
NetCol8000-C190 2000 x 2700 x 1000 (triple-door)

Engineering Materials

Materials Delivered with the Equipment Cord end terminal of the power cable connecting to the indoor unit (2.5 mm2 or 4 mm2 or 6 mm2), OT ground terminal of the power cable to the indoor unit (2.5 mm2 or 6 mm2)
Engineering Purchasing Drainpipe Rigid pipe: made of PP-R material; 3/4 inch outer screw thread to rigid pipe connector
Water inlet and outlet pipe DN50 rigid pipe with an G 2-inch external threaded connector
(Optional) Water inlet pipe for the wet film humidifier Rigid pipe: made of PP-R material; G 3/4 inch inner screw threads to rigid pipe conversion adapter
Other Hoop iron, cable tie, push mount tie, network cable for teamwork, power cable, base, pipe support, thermal insulation foam, dedicated glue for thermal insulation foam, thread sealant

Cables

Model Setup Maximum Current (cooing only/full configuration) Recommended Switch (cooing only/full configuration) Cable Diameter (cooing
only/full configuration)
NetCol8000 -0070 Dual route Active: 7.3 A/16.5 A Standby: 7.3 A/7.3 A Active: C16/C32 Standby: C16/C16 Active: 4 x 2.5 mm2/4 x 4 mm2 Standby: 4 x 2.5 mm2/4 x4 mm2
NetCol8000 -C130 Dual route Active: 14 A/32.3 A Standby: 14 A/14 A Active: C25/C50 Standby: C25/C25 Active: 4 x 4 mm2/4 x 6 mm2 Standby: 4 x 4 mm2/4 x 6 mm2
NetCol8000 -C190 Dual route Active: 20.7 A/39 A Standby: 20.7 A/20.7 A Active: C40/C63 Standby: C40/C40 Active: 4 x 4 mm2/4 x 6 mm2 Standby: 4 x 4 mm2/4 x 6 mm2

Pipe Support

NOTICE

  1. The height of a U-shaped pipe clamp equals the diameter of the pipe with thermal insulation foam minus 5 mm. The pipe supports are to be purchased.
  2. The material for pipe supports and clamps should meet outdoor application requirements.
  3. Install a support every 2500 mm in the straight sections of pipes, and 1000 mm away from each bending point in the turning section.

Installing the Cabinet

NOTICE

  1. Use insulated tools when installing the equipment.
  2. The downflow NetCol8000-C must be installed in the equipment room with a raised floor.
  3. Only engineers certified by the manufacturer or its agent are allowed to install, commission, and maintain the smart cooling product. Otherwise, personal  injury or equipment damage may occur, and the resulting smart cooling product faults are beyond the warranty scope of Huawei.
  4. The electricians onsite must be qualified.
  5. If cabinets are not placed abreast, the height of the raised floor should be greater than 550 mm for downflow units, and the height of the raised floor should be greater than 300 mm for upflow units.
  6. If cabinets are placed abreast and pipes are routed from the bottom, the height of the raised floor should be greater than 800 mm.
  7. During installation, place the packaged top panel on the top of the cabinet to prevent dust. Remove the top panel before the power-on commissioning.

Checking the Nitrogen Pressure and Exhausting Nitrogen

NOTICE

  • The equipment is charged with nitrogen before delivery. Rotate the exhaust valve counterclockwise. If there is a hissing sound, the system is well sealed, and you need to open the exhaust valve to exhaust the nitrogen. If there is no hissing sound, contact Huawei technical support.
  • After nitrogen is exhausted, remove the desiccant bag bound to the fan.
  • You can open or close the exhaust valve using a flat-head screwdriver.

Downflow

Upflow

Removing the Pallet

  1. For downflow units, remove the fan maintenance baffle plate at the front door before removing the bolts.
  2. For a single-door and double-dour cabinet, remove the four screws from both sides.

Open the front door and remove the rear door. Remove the bolts that secure the cabinet and the pallet using a 19# socket wrench.
Securing the Equipment
 NOTICE
For a single-door and double-door cabinet, tighten the four screws on both sides.

  1. Secure the base to the ground using the six expansion bolts.
  2. Move the cabinet onto the base. Secure the cabinet to the base using six bolts. Install a shock pad between the base and the cabinet.

Lowering a Fan (Applicable to Downflow Units)
DANGER

  1. Exercise caution when raising or lowering a fan to prevent personal injury.
  2. When removing the fan beam, assign one person to hold the fan.
    a. Open the front door. Loosen the fan maintenance baffle plate and remove it from the cabinet (using the left fan as an example).
    b. Remove the six screws from the beams on both sides of the fan, and remove the two screws on the connecting piece between the fan and the bottom of the cabinet. Remove the beams and connecting piece.
    NOTICE
    When removing the fan and connecting the piece between the fans and the bottom plate, hold the fan to prevent it from rotating automatically.
    c. At least two people are required to rotate the fan. When the fan is 45 degrees to the bottom of the cabinet,pull the fan along the guide rails onboth sides and rotate it inwards until the fan is completely horizontal.
    d. Place the fan support beam on the top of the fan, and secure the fan support beam to the cabinet by using screws, and secure the two screws on the  connecting piece. Connect the fan signal cable and power cable to the interconnection port reserved on the fan panel, and bind the cables.

Connecting Water Inlet and Outlet Pipelines

  1. Wrap thermal insulation foam around the whole pipes after pipes are connected.
  2. Due to the hardening property of yellow adhesive, nitrogen injection and pressure preserve should be operated 8 hours after the adapter is connected.
    1. (Skip this step for upflow units.) Remove the baffle plate at the bottom of the cabinet, and knock off the U-shaped hole in the baffle plate.
    2. To avoid deforming the pipe, use a 75# open-end wrench to fix the pipe nut, use a 36# open-end wrench to fix the plug, and then remove the plug.
    3. Apply thread sealant evenly on the joints of external screw threads, and install the pipes from inside out.
    4. Use a 75# open-end wrench and an 18# pipe wrench to fix the pipes.
    5. (Skip this step for upflow units.) Install the pipe baffle plate at the bottom of the cabinet, and wrap the pipe and the baffle plate with thermal insulation foam.

Downflow

Upflow

NOTE
The figure uses side pipe routing as an example. If bottom pipe routing is used, purchase right-angle elbows with DN50 outer threads onsite.

Connecting the Drainpipe

(Optional) Leakage Test with Nitrogen
NOTICE

  • If the pressure decreases, apply soapy water on the pipes, especially pipe joints to check for any leakage.
  • If the pressure is stable, wrap all pipes and connectors with thermal insulation foam.
  • Install a reducing valve at the outlet of the nitrogen cylinder. The outlet pressure of the reducing valve must be not more than 0.8 MPa.
    1. Rotate the chilled water valve to the maximum openness (100%).
    2. Check that the needle valves and exhaust valves on the pipeline are closed.
    3. Connect the reducing valve and nitrogen cylinder to the following needle valve, inject 0.8 MPa (when the pressure is stable) nitrogen, and leave them for  24 hours.
    4. Then, check that the pressure reading on the pressure gauge remains unchanged.
    Downflow
    Upflow

Leakage Test with Water
NOTICE

  • To avoid blockage of the heat exchanger in the smart cooling product due to foreign matter from the main pipe during the construction, you are advised to clean the main pipe before water is supplied to the smart cooling product. Turn off the isolation valves on the water inlet and outlet pipes before the cleaning and turn them on afterward.
  • Open the exhaust valve of each heat exchanger to exhaust nitrogen onsite.
    1. Open the general water supply valve.
    2. Verify that the chilled water valve is open (100%). If not, press the button on the side of the actuator, and manually rotate the valve handle to the maximum.
    3. Slowly open the exhaust valve to discharge air.
    4. Adjust the air exhausting speed until no air flows out of the valve. Then close the exhaust valve.
    5. (If a leakage test with nitrogen has been performed, skip this step.) Raise the water pressure in the chilled water pipe to 0.8 MPa. If no leakage occurs after 30 minutes, retain the pressure for 24 hours. The expected result is that the pressure drop is less than 0.01 MPa and the pipe does not leak.
    6. Release the pressure in the pipes, and manually close the chilled water valve.

Connecting Cables

NOTICE

  • Cables must be routed in through cable clips.
  • Route and bind the cables along the beams and columns of the unit.
  • The cabinet has no input-neutral wire. You can cut the blue neutral wire and wrap it using insulation tape.

Connecting the Power Cable and Equipotential Bonding Cable

Downflow
A ground cable must be routed from the equipotential bonding point of the cabinet to the ground.

Upflow
A ground cable must be routed from the equipotential bonding point of the cabinet to the ground.

(Optional) Connecting the T/H Sensor Outside the Cabinet

NOTICE

  • The T/H sensors inside the cabinet are secured at the return air side and their UP ports are connected to the main control board. When connecting the  T/H sensors outside the cabinet, connect the DOWN port of one T/H sensor inside the cabinet to the UP port of the next T/H sensor outside the cabinet as shown in the following figure. Connect all T/H sensors in series in this way. and secure them with cable ties or other fasteners.
  • The T/H sensors should be installed 1.5 m (33 U) above the floor. Each smart cooling product supports three T/H sensors in cold aisles and the other three in hot aisles at most.

DIP Switch Instructions

Position Name Address DIP Switch Sequence No.
1 2 3 4 5 6
Return-air side Return air T/H 1 1 ON OFF OFF OFF OFF OFF
Cold aisle Cold aisle T/H 1 11 ON ON OFF ON OFF OFF
Cold aisle T/H 2 12 OFF OFF ON ON OFF OFF
Cold aisle T/H 3 13 ON OFF ON ON OFF OFF
Hot aisle Hot aisle T/H 1 21 ON OFF ON OFF ON OFF
Hot aisle T/H 2 22 OFF ON ON OFF ON OFF
Hot aisle T/H 3 23 ON ON ON OFF ON OFF
Direct
ventilation		 Fresh air temperature
and humidity		 29 ON OFF ON ON ON OFF
Temperature and
humidity at the return
air valve		 27 ON ON OFF ON ON OFF

(Optional) Connecting Teamwork and Monitoring Cables

No. Name Description
1 Running indicator _
2 Alarm indicator _
3 FE_1 port Reserved for MAC_CAN teamwork
4 CAN_IN port CAN teamwork and RS485 monitoring cascading
5 RS485/12V port Connects a temperature and humidity (T/H) sensor.
6 USB port Connects a WiFi module or USB flash drive.
7 SW button Button for restoring factory settings
8 FE_2 port Reserved for MAC_CAN teamwork
9 CAN_OUT port CAN teamwork and RS485 monitoring cascading
10 COM/FE port Connects a monitoring
communications cable.
11 DP port Connects to the display.

Crimp a network cable.

Pin Color CAN_IN and CAN_OUT RS485/12V Port COM/FE Port (FE monitoring)
1 White-and- orange RS485 T+ (+) RS485 HT+ FE TX+
2 Orange RS485 T- (-) RS485 HT- FE TX-
3 White-and- green _ 12V FE RX+
4 Blue RS485 R+ RS485 HT+
5 White-and-blue RS485 R- RS485 HT-
6 Green FE RX-
7 White-and- brown CANH
8 Brown CANL GND
PIN Color COM/FE Port (RS485 monitoring)
4 Blue RS485+
5 White-and-blue RS485-

Connect teamwork and monitor communications cables.

Networking  Teamwork Monitoring
Protocol CAN Modbus-RTU
Description One teamwork network supports a  maximum of 32 smart cooling products. On the Teamwork Settings screen of the first and last smart cooling product controllers, set Enable teamwork CAN resistor to  Yes. It takes 3 x n seconds to collect data from n smart cooling products. If the time required for the host to collect data from all smart cooling products does not meet the performance requirements, group the smart cooling products.
• If devices are not grouped (n = 1), set RS485 monitoring grouping to Enable on the Modbus Settings screen for each device.
• If devices are grouped (n > 1; recommended: n ≤ 4), set RS485 monitoring grouping to Enable on the Modbus Settings screen for the device with the COM/FE  port connected.

NOTE
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.

CAN teamwork + FE monitoring

Networking  Teamwork Monitoring
Protocol CAN Modbus-TCP/SNMP
Description One teamwork network supports a maximum of 32 smart cooling products. On the Teamwork Settings screen of the first and last smart cooling product controllers, set Enable teamwork CAN  resistor to Yes. –


NOTE
Customers can purchase Huawei’s switch and NetEco for the monitoring system.

(Optional) Installing the Cap (Applicable to Upflow Units)
NOTE

  • It takes two persons to install the cap using a 2 m step ladder.
  • Before installing the cap, attach the thermal insulation foam in the accessories to the top beam of the smart cooling product, and ensure that the reserved holes in the thermal insulation foam are aligned with the holes in the beam. Check that the cap is intact and free from scratches, that the sheet metal is not bent, and that the screws are secure.

Installation Verification

Check Item

 Expected Result

Actual Result

Cabinet The cabinet is installed properly, without any tilt. The cabinet is secured to the base by using bolts. The foreign matter inside the cabinet, such as cable ties and stubs, has been cleaned up. ❑Passed ❑Failed
Fan The fan of the downflow unit is lowered and secured to the cabinet bottom plate. The fan has no foreign matter inside. ❑Passed ❑Failed
Water pan The foreign matter inside the water pan is cleaned up. ❑Passed ❑Failed
Differential pressure switch The cable ties are securely tightened around pressure tubes. There is no foreign matter in pressure tubes. The pressure tubes show no obvious bends. ❑Passed ❑Failed
Exhaust valve The exhaust valve is closed. ❑Passed ❑ Failed
Drainage valve The drainage valve is closed. ❑Passed ❑Failed
Air filter The air filter is correctly installed according to the airflow direction marked on the frame. ❑Passed ❑Failed
Chilled water valve 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 are exposed. Cables are securely connected to the chilled water valve and its actuator. Cables to the chilled water valve and its actuator are secured. Check that the manual button on the actuator is reset (the button bounces up). ❑Passed ❑Failed

Equipment Power-On

Power-On

  1. Users are classified into admin and operator users, and admin users have more rights than operator users. The preset password is 000001 for both types of users. For system security purposes, change the preset password upon the first login.
  2. A login session automatically expires if no operation is performed in three minutes. It is recommended that you tap at the lower right corner to manually log out after operations are complete.
    1. Turn on the general switch, fan switch QF4. For a device that has two power inputs, turn on both the active power switch QF1 and standby power switch QF2.
    2. Power on the system.
    • Select the language: English or Chinese.
    • Select the date & time settings: date format, date, time, and time zone.
    • On the home screen, tap Settings > System Settings > T/H Sensor to change temperature and humidity control types or set points.

(Optional) Teamwork Settings
NOTE
All teamwork control parameters can be set on the master smart cooling product. Only Teamwork group No., Air conditioner address, Enable teamwork CAN  resistor, Teamwork function, and Networking mode can be set on slave smart cooling products. Other parameters of the slave units will be modified by the master unit synchronously.
The table uses 8 smart cooling products in CAN teamwork as an example.

No. Item
Teamwork group no. Teamwork unit address Teamwork CAN
resistor enable		 Teamwork function Network Total number of units Number
of running units		 Rotation function Require ment control
1 1 1 Yes Enable CAN network 8 6 (2
standby)		 Enable Enable
2 1 2 No Enable CAN
network
CAN
network
8 1 8 Yes Enable CAN
network		 I /
  1. Teamwork group no.: A maximum of 32 smart cooling products can be connected in a teamwork group and a maximum of four teamwork control groups can be connected in an RS485 network. To increase the network management system (NMS) response speed, it is recommended that one monitoring system should connect to one teamwork control group.
  2. Teamwork unit address: In a teamwork control group, each smart cooling product address must be unique, and the address of one smart cooling product must be 1 (master smart cooling product).
  3. Teamwork CAN resistor enable: After connecting smart cooling products 1 to 32 (determined by cable routing sequence) in series, set the parameter to Yes for the first and last smart cooling products in the teamwork control group, and retain default values (No) for other smart cooling products.
  4. Teamwork function: Indicates whether to disable or enable the teamwork function. If disabled, a unit operates independently. If enabled, a unit operates in a team with other units.
  5. Network: The networking mode set on the screen must be consistent with the actual networking mode. Otherwise, the teamwork control function will be unavailable.
  6. A total number of units: Indicates the number of precision smart cooling products in a group.
    The value is an integer ranging from 1 to 32.
  7. A number of running units: Specifies the number of running NetCol8000-Cs in a group. The value ranges from 1 to the number of NetCol8000-Cs in the group.
  8. Rotation function: Enable the active and standby smart cooling products to work alternately. This function is recommended when the heat load is even.  When rotation is enabled, the parameters for the rotation period and rotation time, and forced rotation can be set based on the customer’s requirements.
  9.  When Requirement control is set to Enable, the master smart cooling product synchronizes operating data (parameters such as the T/H control type,  temperature setpoint, humidity set point for the master smart cooling product) to the slave smart cooling product, and all the precision smart cooling products in the group refer to the mode delivered by the master smart cooling product. When Requirement control is set to Disable, the master smart cooling product does not synchronize operating data to the slave smart cooling product, and all the smart cooling products operate based on their own requirements, not referring to the mode delivered by the master smart cooling product.

(Optional) Setting Communications Parameters
RS485 Monitoring Network Cable (Modbus-RTU Protocol)
a. On the home screen, choose Settings > Comm Settings > Modbus Settings. The value should be consistent with that set on the NMS.
b. Set the communication address. The communication addresses of two smart cooling products connecting to the same NMS must be unique.
c. Set RS485 monitoring grouping to Enable for the smart cooling product connected to the host through the COM/FE port, and set this parameter to Disable for other smart cooling products.

FE Monitoring Network Cable (Modbus-TCP)
a. On the home screen, choose Settings > Comm Settings > IP Settings. The IP assigning mode is set to Manual. Set IP address, Subnet mask, Gateway according to the actual plan.
b. On the home screen, choose Settings > Comm Settings > Modbus Settings. The Link mode can be set to Server and Client, Client, or Server. Set this parameter based on the site requirements.
c. If Link mode contains Client, set Client encryption to Enable. Enter the actual IP address of the EMS. When Client encryption is set to Enable, set NMS  port number to 32907.
NOTICE

  • The encryption mode must be the same as it on the NMS.
  • For details about SNMP settings, see NetCol8000-C(070, 130, 190) In-room Chilled Water Smart Cooling Product User Manual.

Commissioning

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

NOTICE

  • Download the Service Expert app from the Huawei app store and run it on Android. Apply for permission after downloading the app.
  • Except that the indoor fan item is mandatory, you can clear other commissioning items that are not required.
  • If this is not the first startup, choose Maint > Wizard Startup to enter wizard startup.
  • If no humidifier is configured, their commissioning items are not displayed.

Offline Boot

Online Boot

Wizard startup flowchart

Checking After Commissioning

Check Item Result
The controller has exited from the diagnostic mode. □Passed □Failed
The temperature and humidity are correctly set. □Passed □Failed

Power-Off

  1. Tap Shutdown on the LCD home screen.
  2. Turn off all switches on 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 1: Precautions Against Adding Glycol
For details about adding glycol, refer to the NetCol8000-C(070, 130, 190) In-room Chilled Water Smart Cooling Product User Manual.
To prevent the glycol solution from corroding pipes and the heat exchanging coil, corrosion inhibitors 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