Huawei NetCol5000-A050 User manual

NetCol5000-A050 In-row Air Cooled Smart
Cooling Product
Quick Guide (1350 mm Depth)
Huawei Technologies Co., Ltd.
Issue: 02
Part Number: 31500FXT
Date: 2021-09-01

1Copyright © Huawei Technologies Co., Ltd. 2021.
All rights reserved.
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, 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).
1Overview
Indoor Unit
(1) Electric heater (optional)
(2) Fan switch
(3) Fan
(4)
Display module
(5) Electrical box
(6) Evaporator
(7) Signal cable terminal block
(8) Main control module
(9) Power module
(10) Temperature and humidity
(T/H) sensor
(11) Compressor drive
(12) Oil separator
(13) Compressor
(14) Filter dryer
(15) Wet film humidifier
(optional)
(16) Condensate pump
Outdoor Unit Low Temperature
Component (Optional)
(1) Condenser
(2) Electric control box
(3) Fan
NetCol500-A060
NetCol500-A120
(can connect to two
indoor units)

2
2Installation Requirements
Angle
Space
Dimensions
Model
BOM Code
H1 (H2) x W x
D1 (D2) (mm)
NetCol500
-
A060
52273539
1107 (677) x 1094 x 1356 (1219
)
52273539
-005
1107 (655) x 1094 x 1356 (1219)
52273539
-006
1156 (703) x 1094 x 1356 (1219)
NetCol500
-
A120
52273755
-002
1107 (655) x 2189 x 1356 (1219
)
Horizontal installation
Vertical installation
Indoor unit
Or
Low temperature component
Or
Outdoor unit
Or
The dotted boxes in the
figures indicate the
optional low temperature
component.

3
Layout Rules
Top pipe routing
Bottom pipe routing
Pipe Support
(1) Inverted U
-shaped trap
(2) Oil trap
(3) Tilted gas pipe
(4) Tilted liquid pipe
Note: The gradient of the gas pipe and
liquid pipe must be at least 1:200.
The inverted U-shaped trap
should be higher than the top
copper pipe of the condenser.
The equivalent length (L) of
the one-way pipe should be
less than or equal to 100 m.
(1) Pipe support
(2) Pipe
(3) Mounting surface
(4) Thermal insulation foam
(5) U
-shaped pipe clamp

4
3Installation Preparations
1. Prepare installation tools based on site requirements.
2. Prepare materials.
Type
Description
Example
Standard material
This type of materials is provided by Huawei,
and you can find them in the fittings delivered
with the equipment.
Materials in the packing list
Additional material
Customers can purchase this type of materials
from Huawei or other vendors.
Refrigerant, pipe component,
and
cable
Optional material
Purchased from Huawei based on application
scenarios.
Low temperature component
and T/H sensor
Engineering
purchase material
This type of materials is not configured by
Huawei. Customers need to prepare by
themselves.
Drainpipe, pipe support, and
base
Refrigerant
R410A refrigerant
Refrigerant
Pipe
Gas pipe: R410A copper pipe; outer diameter: 7/8 in. (22.22 mm), wall thickness:
1.2 mm, operating pressure: ≥ 4.5
MPa
Liquid pipe: R410A copper pipe; wall thickness: 1.0 mm, operating pressure: ≥ 4.5
MPa

L ≤ 60 m: outer diameter of 5/8 in. (15.88 mm)

60 m < L ≤ 100 m: outer diameter of 3/4 in. (19.05 mm), connected using a
copper pipe reducer
Thermal insulation foam: thickness ≥ 9.2 mm
Oil trap, inverted trap, and pipe support
Water Pipe
Humidifier water inlet pipe:

Rigid pipe connection: G 1/2 in. rigid pipe connector with external threads,
rigid pipe (such as PP-R pipe)
Hose connection: G 1/2 in. pagoda connector with external threads, hose (such
as EPDM pipe)
Drainpipe:

Rigid pipe connection: BSPT
1/2 in. rigid pipe connector with external threads,
rigid pipe (such as PP-R pipe)

Hose connection: BSPT 1/2 in. pagoda connector with external threads, hose
(such as EPDM pipe)
Thermal insulation foam: thickness ≥ 9.2 mm
Recommended
Cable

Equipotential ground cable: 16 mm2outdoor copper cable

Indoor unit power cable: 5 x 10 mm2outdoor copper cable

Outdoor unit power cable: 5 x 2.5 mm2outdoor copper cable (The neutral
wire is not used and must be insulated.)

(Optional) Power cable for the low temperature component: 2 x 1.5 mm2
outdoor copper cable
(Optional) Signal cable (using the RS485 communications cable of the outdoor
unit (52273539) as an example): 3 x 1.5 mm2shielded outdoor cable

(Optional) Temperature and humidity (T/H) sensor cable, teamwork control
cable, and monitoring communications cable: CAT 5e or higher shielded
network cable
Base
Prepare the base for the indoor unit, the support or concrete base for the outdoor
unit, and the concrete base for the low temperature component based on the
scenario.

5
Do not use refrigerant of poor quality. Huawei will not be liable for any device damage caused
by using refrigerant of poor quality. Verify that the refrigerant is authentic in the following
ways:
1. Dial the refrigerant vendor's hotline to confirm the refrigerant authenticity.
2. Place the refrigerant tank indoors for 24 hours. Use a point thermometer to measure the
outer surface temperature of the refrigerant tank, and connect a pressure gauge to the tank
to measure the internal pressure. Find the saturation pressure corresponding to the
measured external surface temperature from the mapping table. If the deviation between
the saturation pressure and the measured internal pressure is greater than 0.2 MPa, the
refrigerant does not meet the requirements and needs to be replaced.
Refrigerant Requirements
R410A Saturation Pressure (Surface Pressure)
Temperature
(ºC
)
Saturation
Pressure (
MPa
)
Temperature
(
ºC)
Saturation
Pressure (
MPa)
Temperature
(ºC
)
Saturation
Pressure (
MPa)
10 0.99 19 1.31 28 1.69
11 1.02 20 1.35 29 1.74
12 1.05 21 1.39 30 1.79
13 1.09 22 1.43 31 1.84
14 1.12 23 1.47 32 1.89
15 1.16 24 1.51 33 1.94
16 1.19 25 1.56 34 1.99
17 1.23 26 1.60 35 2.05
18 1.27 27 1.65 36 2.10
Do not use shielded cables as outdoor unit power cables.
Shielded cables are used as signal cables, and the shield layer must be reliably grounded.
Otherwise, device communication is affected.

6
4Installing Devices
If the pressure displayed on the pressure
gauge is greater than or equal to 0.2 MPa, the
unit is in good condition.
If the pressure gauge reading is less than 0.2
MPa, pipes have leakage points. Contact
Huawei technical support.
1. Open the rear door, remove the air
filters, and keep them properly.
If any bonnet is missing, contact Huawei
technical support.
2. Check the nitrogen pressure at the needle valves
shown in the following figure.
b) Remove the sheet metal for securing the
compressor during transportation.
a) Remove the pallet.
3. Install the indoor unit.

7
c) Level the cabinet. d) Install connecting kits.
(1) Level
e) Secure the cabinet.

8
4. Install the outdoor unit.
Vertical Installation
b) Secure the outdoor unit.a) Remove the pallet.
Horizontal Installation
Model
W x D (mm
)
NetCol500
-A060
924 x 1047
NetCol500
-A120
2018 x 1047
NetCol500-A060:
NetCol500-A120:
In vertical Installation, use a
support base to secure the unit.
For details, see the user manual.

9
5. (Optional) Install a low temperature component.
b) Secure the low
temperature
component.
a) Remove the pallet.
5Installing Pipes
1. Exhaust nitrogen from all needle valves in sequence.
2. Install pipes.
Top Pipe Routing
Before connecting pipes, exhaust
nitrogen from the pipes. Otherwise, a
large amount of airflow will be
generated during welding, which
may cause personal injury or device
damage.

10
No.
Name
Description
1
Gas pipe
Connection relationship of gas pipe ports:
Without a low temperature component: Indoor unit > Outdoor unit

With a low temperature component: Indoor unit > Low temperature
component > Outdoor unit
2
Liquid pipe
Connection relationship of liquid pipe ports:
Without a low temperature component: Indoor unit > Outdoor unit

With a low temperature component: Indoor unit > Low temperature
component > Outdoor unit
3
Drainpipe
Connecting to the drainage system
4
Humidifier
water inlet pipe
With a wet film humidifier: connecting to the engineering pipe
Bottom Pipe Routing
a) Weld the refrigerant pipes (gas pipe and liquid pipe).
Avoid damaging the device during welding. Take protective measures around the welding
position, such as spreading wet cloth.
The following describes how to weld refrigerant pipes if pipes are routed from the bottom of
the indoor unit. Welding other refrigerant pipes does not involve removing the bottom plate of
the cabinet and handling holes.
Thermal
insulation
foam:
thickness
≥ 9.2 mm
Cable hole sealing

11
b) Install the drainpipe.
The external drainpipe must have a certain gradient (> 1:100), and no accumulated water is
allowed.
The following describes how to route pipes from the bottom of the indoor unit. If pipes are
routed from the top, there is no need to remove the bottom plate of the cabinet or handle
holes.
c) (Optional) Clean the engineering pipe, connect the reserved humidifier water inlet pipe to
the engineering pipe, and wrap the pipe with thermal insulation foam.
Cable hole sealing Thermal
insulation
foam:
thickness
≥ 9.2 mm
Rigid pipe connection (A) and hose connection (B) are supported.
Select a connection mode based on site requirements.
Rigid Pipe Connection
Hose Connection
6Installing Cables
Connect cables in accordance with the installation laws and regulations of the country or
region where the project is located.
Before connecting cables to ports, leave enough slack to reduce the tension on the cables
and prevent poor cable connections.
Thermal insulation foam: thickness ≥ 9.2 mm

12
(1) Equipotential ground cable
(2) Active power cable
(3) Standby power cable
(4) Power cable for the outdoor
unit
(5) Power cable for the low
temperature component
(6) T/H sensor cable
(7) Teamwork and monitoring
communications cables
(8) Signal cable
1. Determine the cabling route.
2. Install an equipotential ground cable. 3. Install active and standby power cables.
Indoor Unit Top Cabling Indoor Unit Bottom Cabling Outdoor Unit Cabling

13
4. Open the electric control box, install cables for the outdoor unit, seal waterproof connectors,
and close the electric control box.
•Do not open the electric control box in rainy or snowy days. If you have to, take protective
measures to prevent rain or snow from entering the electric control box.
•Ensure that cables are connected correctly and securely.
•In a shielded equipment room, a proper filter must be installed. Otherwise, the smart cooling
product cannot work properly.
Connecting the
Power Cable for
an Outdoor Unit
(Optional)
Connecting the
Power Cable for
a Low
Temperature
Component
(Optional)
Connecting an
RS485
Communications
Cable for the
Outdoor Unit
Fan switch
U V W
Outdoor unit Indoor unit
Outdoor unit
U V W
Outdoor unit Indoor unit
Low
temperature
component
Low
temperature
component
L N
Low temperature
component/Water
cooling module
L N

14
5. (Optional) Install T/H sensor cables.
Pin
X301
X302
1
Outdoor unit on/off control (
OUTD-
DO+)
Outdoor unit RS485 communication (RS485
-
SW+)
2
Outdoor unit on/off control (
OUTD-DO–
)
Outdoor unit RS485 communication (RS485
-SW–
)
3
Smoke sensor (12 V DC
-SR)
Outdoor unit RS485 communication (
GND-ISO)
4
Smoke sensor (SMOKE sensor)
Common alarm (DO
-Z1+)
5
Remote startup/shutdown (DI
-Z+)
Common alarm (DO
-Z1–)
6
Remote startup/shutdown (DI
-Z–)
Common alarm (DO
-Z2+)
7
Water sensor (AI
-W6G+)
Common alarm (DO
-Z2–)
8
Water sensor (AI
-W6G–)
-
The following table describes the signal cable terminal blocks. For details about how to
connect signal cables, refer to the method of connecting the RS485 communications cable for
the outdoor unit.
(1) Indoor unit T/H sensor
(2) IT cabinet T/H sensor
(3)
Standard network cable
The T/H sensors in the aisles should be installed on the door frame of IT cabinets and 1.5 m
(33 U) above the floor. After the sensors are secured, set the sensor addresses based on their
locations and the following table.
Display Name
Address
T/H Sensor DIP Switch No.
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

15
6. (Optional) Install teamwork and monitoring
communications cables.
No.
Name
Description
1
Running indicator
-
2
Alarm indicator
-
3
FE_1 port
FE teamwork control
4
CAN_IN
port
CAN teamwork and RS485 monitoring cascading
5
RS485/12V port
Connecting to a T/H sensor
6
USB port
Connecting to a
WiFi module or USB flash drive
7
SW button
Button for restoring factory settings
8
FE_2 port
FE teamwork control
9
CAN_OUT
port
CAN teamwork and RS485 monitoring cascading
10
COM/FE port
Connecting to a monitoring communications cable
11
DP port
Connecting to the display
Ports on the Main Control Module
a) Prepare network cables.
PIN
Color
FE_1 and
FE_2
CAN_IN
and
CAN_OUT
RS485/12V
Port
COM/FE Port
(FE
Monitoring)
1
White
-and-
orange
FE TX+
RS485 T+ (+)
RS485
HT+
FE TX+
2
Orange
FE TX
–
RS485 T
–(–)
RS485
HT–
FE TX
–
3
White
-and-
green
FE RX+
-
12V
FE RX+
4
Blue
-
RS485 R+
RS485
HT+
RS485+
5
White
-and-
blue
-
RS485 R
–
RS485
HT–
RS485
–
6
Green
FE RX
–
-
-
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
–

16
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.
Networking
Protocol
Teamwork
CAN
Monitoring
Modbus
-RTU
Smart Module Networking Scenario
Networking
Teamwork
Monitoring
Protocol
MAC_CAN
Modbus
-
TCP
b) Connect teamwork and monitoring communications cables.
CAN Teamwork + RS485 Monitoring
CAN Teamwork + FE Monitoring
Networking
Teamwork
Monitoring
Protocol
CAN
Modbus
-TCP/SNMP
Customers can purchase Huawei's switch and NetEco for the monitoring system.

17
7Verifying the Installation
Item
Check Content
Check Result
Refrigerant
pipe
Ports are connected correctly. The pipes have oil traps, inverted U
-
shaped traps, gradients (of refrigerant pipes), and pipe supports.
The pipes are secured. The pipes are wrapped with thermal
insulation foam, and the foam is intact. The needle valve plugs are
secured (
torque: 0.45±0.05 N·m), and the valve bonnets are
tightened. Pipes are not over
-bent.
□
Passed
□
Failed
Water pipe
Water pipe joints are sealed.
The drainpipe is properly connected.
□
Passed
□
Failed
Electrical
connection
Cables are intact and free of sharp bends. All cables are connected
correctly and securely. The rated specifications of the upstream
switch meet
the maximum current requirement of the device.
□
Passed
□
Failed
Indoor unit
The cabinet is installed properly without any tilt. The cabinet is
secured by bolts. The foreign matter inside the cabinet such as
cable ties and stubs is cleaned up. The holes are sealed.
□
Passed
□
Failed
Compressor
The sheet metal fasteners on the compressor have been removed.
The bolts for securing the compressor are tightened.
□
Passed
□
Failed
Outdoor unit
Fan blades work properly. The fin protective cardboards have been
removed. The needle valve bonnets are tightened.
There is no
foreign matter in the electric control box. The door of the electric
control box is closed. The screws on the door are tightened. The
waterproof connectors at the bottom are tightened. The cables are
protected with tubes.
□
Passed
□
Failed
Environment
The installation space is proper, and the installation environment is
clean and tidy.
□
Passed
□
Failed
8Leakage Test with Nitrogen, Vacuumization, and
Refrigerant Precharging
Inject 3.0 MPa nitrogen and preserve the pressure for 24 hours. The system pressure should not
decrease under a stable ambient temperature before and after the preservation. If any leakage
is found after pressure preservation, check the pipes for leakage, especially the welding points,
needle valves, and angle valves.
Perform vacuumizing for at least 80 minutes and ensure that the final absolute pressure is not
greater than 60 Pa. When the final pressure does not decrease more, continue to vacuumize for
10 minutes. After vacuumizing is complete, close the vacuum pump and all valves, and preserve
the pressure for 10 minutes. Ensure that the absolute pressure does not exceed 90 Pa. If the
minimum reading of the pressure gauge is greater than 60 Pa, ensure that the pointer stays at
the smallest scale of the pressure gauge and preserve the pressure for 1 hour. Then check that
the pressure does not rise.
Leakage Test with Nitrogen
8.1
Vacuumization
8.2

18
Refrigerant Precharging
8.3
1. Take off the vacuum pump from the vacuumizing device, and replace the vacuum pump with a
refrigerant cylinder.
2. Slightly open the refrigerant cylinder valve and slightly loosen the connection nut on the
rubber hose. Tighten the nut when cold air escapes out of the nut.
3. Put the refrigerant cylinder upside down on an electronic balance. Set the reading on the
balance to zero.
4. Open all pressure gauge valves and the refrigerant cylinder valve to charge refrigerant.
5. The amount of precharged refrigerant must be greater than or equal to half of the total charge
amount calculated and less than or equal to the total charge amount. If the total refrigerant
amount cannot be fully precharged, charge the remaining amount of refrigerant after startup.
6. After the refrigerant is charged, close all pressure gauge valves and the refrigerant cylinder
valve.
Charge Amount of
Refrigerant
One
-Way Pipe Total
Length (L)
NetCol500
-A060
(NetCol500
-A120)
NetCol500
-A060
(NetCol500
-
A120) &
Low Temperature
Component
Standard amount (kg)
≤ 10 m
10.2
35.8
Charge amount (kg) =
Standard charge amount +
Extra charge amount
10 m
＜L ≤ 60 m
10.2 + (L
–10) x 0.19
35.8 + (L
–10) x 0.19
Charge amount (kg) =
Standard charge amount +
Extra charge amount
60 m
＜L ≤ 100 m
10.2 + (L
–10) x 0.25
35.8 + (L
–10) x 0.27
1. Leakage test with
nitrogen
2. Vacuumization
3. Refrigerant
precharging
Low-pressure
needle valve
Exhaust pipe
needle valve
Valve
Valve
Connection
nut
Reducing
valve
Nitrogen
cylinder
Electronic
scale
Refrigerant
cylinder
Vacuum
pump
Without a Low Temperature Component
•The pressure gauge on the left is a low-
pressure gauge, and the one on the right
is a high-pressure gauge.
•The needle valve specifications are 7/16-
20UNF.

19
Liquid pipe
needle valve
With a Low Temperature Component 1. Leakage test with nitrogen
2. Vacuumization
3. Refrigerant precharging
Valve
Low-pressure
needle valve
Exhaust pipe
needle valve
Connection nut
Reducing
valve
Nitrogen
cylinder
Electronic
scale
Refrigerant
cylinder
Vacuum
pump
The pressure gauge on the left is a low-pressure gauge,
and the one on the right is a high-pressure gauge.
The needle valve specifications are 7/16-20UNF.
Valve
1. Turn on all switches except indoor unit switches QF1 and QF2 in the smart cooling system.
2. Turn on the upstream power input switch for the smart cooling product.
3. Turn on indoor unit switches QF1 and QF2.
4. After the first power-on, the Quick Settings screen is displayed. On the screen, set the
language, date format, date, time, time zone, temperature control intelligent monitoring
board (open the electric control box of the outdoor unit and check whether there is a
temperature control intelligent monitoring board on the box cover. If yes, select Yes for
Temp control intelligent monitoring board under Quick Settings), smart diagnosis
function (that is, the function of detecting insufficient refrigerant and the function of energy
saving control by linkage between the indoor and outdoor units), altitude, and other
parameters. If this is not the first power-on, the home screen is displayed.
9Powering On the System
Power-On
9.1
Users are classified into two types: operator (preset password: 000001) and admin (preset
password: 000001).
After power-on, the device is in the shutdown state.
After power-on, the compressor starts preheating, and the system generates a compressor
preheating alarm. The preheating takes 12 hours. Before the compressor is preheated, the
device cannot be powered on. To obtain the remaining preheating time of the compressor,
choose Running > Device Details > Compressor.
The smart diagnosis function is available only when the outdoor unit is configured with a
temperature control intelligent monitoring board.