Huawei NetCol5000-C065 In-Row Chilled Water Smart Cooling User Guide

HUAWEI NetCol5000-C065 In-Row Chilled Water Smart Cooling

Overview

1. Electric control box
2. PSU
3. Main control board
4. Differential pressure switch
5. Temperature and humidity sensor
6. Wet film humidifier
7. Chilled water outlet pipe
8. Water pan
9. Drainpipe
10. Water pump
11. Chilled water valve actuator
12. Chilled water inlet pipe
13. Heat exchanger

Preparing Materials

Preparing an Indoor Unit 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. The base bearing capacity must be at least 2 t.
3. You are advised to use angle steel, square steel or channel steel. Thickness of 3 mm to 5 mm is recommended.

Holes in Top and Bottom Plates

1. Equipotential PE cable hole (Φ28 mm)
2.  Drainpipe hole (Φ43 mm)
3. Humidifier water inlet pipe hole (Φ43 mm)
4. Chilled water inlet pipe hole (Φ103 mm)
5.  Chilled water outlet pipe hole (Φ103 mm)
6. Power cable hole (Φ43 mm)
7. Signal cable hole (Φ43 mm)

Installing the Equipment

NOTICE

1. 1. Read the NetCol5000-C(030, 032, 065) In-row Chilled Water Smart Cooling Product User Manual (2019) or instructions before installing the NetCol5000-C.
2. You are recommended to use tools that are fully insulated when installing devices.
3. Only engineers from the manufacturer or engineers certified by the agent 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

NOTE: The connectors are secured to the equipment with M6 screws and secured to the pallet with M12 screws.

Leveling the Cabinet

Installing Cabinets Side by Side

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.

Drainpipe Layout

Notice: Secure the drainpipe properly.

Connecting the Humidifier Water Inlet Pipe

Connection method

Note 1:

1. When plastic materials such as PA66 are used, the recommended torque is 5 N·m.
2. When metal materials are used, the recommended torque is 10 N·m. A sealing washer must be used when an union is used.

Connecting the Chilled Water Inlet and Outlet Pipes

Aluminum plastic pipe

Seamless steel pipe

(Optional) Leakage Test with Nitrogen

• If the pressure has fallen, apply soapy water on the pipes, especially 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.

(Optional) Leakage Test with Water

Notice: If the leakage test has been done with nitrogen, skip the 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.

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.

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 strong- and weak-current 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.

Connect the equipotential cable.

Connect the power cable.

(Optional) Connecting the Water Sensor

Installing T/H Sensors Outside Cabinets

1. Connect the temperature and humidity (T/H) sensor cable. T/H sensors in the aisle should be installed at the door frame inside the server cabinet and 1.5 m above the ground (33 U). After they are secured, set the sensor positions based on their location and the table.
2. 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

   Main control board ports

   

   1. T/H_1 (T/H RS485 communications port) (used for connecting to the external temperature and humidity sensor)
   2. T/H_2 (T/H RS485 communications port) (used for connecting to the external temperature and humidity sensor)
   3. CAN_IN/CAN_OUT/FE_IN/FE_OUT (used for teamwork networking and FE_IN/FE_OUT are reserved)
   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).

   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, set Enable teamwork CAN resistor for the first and last smart cooling products to Yes on the screen.

   Connecting an FE teamwork network cable

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

   

   CAN teamwork networking cable

   1. Prepare the 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 the 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)

   The FE monitoring and FE teamwork use the same network cable. Connect the FE monitoring cable in the same process of connecting the FE teamwork network cable.

   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. Strong-current and weak-current 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. Log in as the admin user, and 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.

   (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.

   (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 the Indoor fan control type to Pressure diff ctrl. It is recommended that the Indoor fan pressure difference setpoint retain the default value. If there are hot spots onsite, you can increase the value. Path: Settings > System Settings > Indoor fan

   (Optional) Teamwork Settings

   1.  Teamwork group no.: One teamwork networking can contain four groups at most. They must have the same teamwork control number and can be assigned 1–4 respectively.
   2. Smart cooling product address: In a teamwork control group, each smart cooling product address (1-32) must be unique, and the smart cooling product with minimum address is the master smart cooling product.
   3. Networking mode: The networking mode set on the screen must be consistent with the actual networking mode. CAN network indicates teamwork control over a CAN bus, MAC_CAN network teamwork control over an FE port.
   4. Enable teamwork CAN resistor: In CAN networking, set this parameter for the first and last smart cooling products to Yes.
   5. Number of smart cooling products in this group: Indicates the number of precision smart cooling products in a group. The value is an integer ranging from 1 to 32.
   6. Number of running smart cooling products in this group: Specifies the number of running NetCol5000-Cs in a group. The value ranges from 1 to the number of NetCol5000-Cs in the group.
   7. Rotation function: Enable the active and standby smart cooling products to work alternately. This function is recommended when the heat load is even.
   8. When Requirement control is set to Anti-competitive running, the master smart cooling product synchronizes operating data (parameters such as the T/H control type, temp set point, humid 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, all the smart cooling products operate based on their own requirements. When the requirement control is Indoor fan unified control or Central load distribution, all smart cooling product fans in the group rotate at the same speed.

   No.		1	2	3	…	7	8
   Item	Teamwork group no.	1	1	1	…	1	1
   	Air conditioner address	1	2	3	…	7	8
   	Enable teamwork CAN resistor	Yes	No	No	…	No	Yes
   	Teamwork function	Enable	Enable	Enable	…	Enable	Enable
   	Networking mode	CAN	CAN	CAN	CAN	CAN	CAN
   	Number of air conditioners in this group	8	/	/	…	/	/
   	Number of running air conditioners in this group	6 (2 standby)	/	/	…	/	/
   	Rotation function	Enable	/	/	…	/	/
   	Requirement control	Enable	/	/	…	/	/

   No.		1	2	3	…	7	8
   Item	Teamwork group no.	1	1	1	…	1	1
   	Air conditioner address	1	2	3	…	7	8
   	Teamwork function	Enable	Enable	Enable	…	Enable	Enable
   	Networking mode	MAC_CA N	MAC_CA N	MAC_CA N	MAC_CA N	MAC_CA N	MAC_CA N
   	Number of air conditioners in this group	8	/	/	…	/	/
   	Number of running air conditioners in this group	6 (2 standby)	/	/	…	/	/
   	Rotation function	Enable	/	/	…	/	/
   	Requirement control	Enable	/	/	…	/	/

   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 app store and runs 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 or is configured, their commissioning items are not displayed.

   Offline Boot

   

   Online Boot

   

   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 risks. After the risk is accepted, 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 risks. 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 the Commissioning

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

   Notice

   For details about device commissioning and maintenance, see NetCol5000-C(030, 032, 065) In-row Chilled Water Smart Cooling Product User Manual (2019).

   Huawei Technologies Co., Ltd.

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