Huawei NetCol8000-C070 Manual de usuario

HUAWEI TECHNOLOGIES CO., LTD.

NetCol8000-C(070, 130, 190) In-room

Chilled Water Smart Cooling Product

Quick Guide

Issue: 02

Part Number: 31500CWQ

Date: 2021-01-24

1Product Overview

Materials

Delivered with

the Equipment

Single cord end terminal of the cable connecting the indoor units (2.5mm2or

4mm2or 6mm2), OT ground terminal of the power cable to the indoor unit

(2.5mm2or 6mm2)

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 seamless steel 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 1/2 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

2Engineering Materials

Cable

2.1

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)

Model Confi

gurat

ion

Maximum Current

(cooing only/full

configuration)

Recommended

Switch (cooing

only/full

configuration)

Cable Diameter (cooing

only/full configuration)

NetCol8000

-C070

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

3Installing the Cabinet

1. Use insulated tools when installing the equipment.

2. The downflow NetCol8000-Cs 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 500

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 the

dust. Remove the top panel before the power-on commissioning.

•The equipment is charged with nitrogen before delivery. Rotate the exhaust valve

counterclockwise. If there is a hiss sound, the system is well sealed, and you need to open

the exhaust valve to exhaust the nitrogen. If there is no hiss 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.

Checking the Nitrogen Pressure and Exhausting Nitrogen

3.1

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.

Pipe Support

2.2

Open the front door and remove the rear door. Remove the bolts that secure the cabinet and

the pallet using a 19# socket wrench.

Removing the Pallet

3.2

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.

Downflow Upflow

For a single-door and double-door cabinet, tighten the four screws on both sides.

Securing Equipment

3.3

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.

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.

Lowering a Fan (Applicable to Downflow Units)

3.4

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.

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 on

both 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.

When removing the fan and connecting

piece between the fans and the bottom

plate, hold the fan to prevent it from

rotating automatically.

Connecting Water Inlet and Outlet Pipelines

3.5

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.

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.

Downflow

Upflow

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

3.6

Upflow

Downflow

Connection method

(1) Drainpipe

(Optional) Leakage Test with Nitrogen

3.7

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.

•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.

Downflow

(1) Drainpipe

4. Then, check that the pressure

reading on the pressure gauge

remains unchanged.

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.

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.

Leakage Test with Water

3.8

•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 afterwards.

•Open the exhaust valve of each heat exchanger to exhaust nitrogen onsite.

Upflow

Connecting the Power Cable and Equipotential Bonding Cable

4.1

A ground cable must be routed from the

equipotential bonding point of the cabinet

to the ground.

(1) Equipotential bonding point

4Connecting Cables

•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.

Upflow

Downflow

A ground cable must be routed from the

equipotential bonding point of the cabinet

to the ground.

(1) Equipotential bonding point

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