Huawei NetCol5000-A021HN12D 20020E1 User manual

1Overview
Indoor Unit Part Introduction
Model
Heating
and
Humidifi
cation
Pipe
Routi
ng
Mode
Drain
age
Power
Suppl
y
Dimensions
(without Packing,
H x W x D)
NetCol5000-
A021HN12D
20020E1
No Over
head
and
botto
m
Forcibl
e
Dual-
route
power
supply
2000 mm
x 300
mm
x 1100 mm
2000 mm
x 300
mm
x 1200 mm
(with an
enclosure frame)
NetCol5000-
A021HN12D
2E120E1
Yes
Model
Net Weight
(Without
legs)
Dimensions
NetCol500
-
A0265S11E0
132 kg
D = 1094 mm,
W1 = 1120 mm,
W2 = 985 mm,
H1 = 920 mm,
H2 = 620 mm
Outdoor Unit Introduction
Copyright © Huawei Technologies Co., Ltd. 2019. All Rights
Reserved.
1Evaporator
2External signal
port
3Strong-current box
4Weak-current box
5Transformer
6Driver
7Humidifier cylinder
8Oil separator
9Compressor
10 Drainpipe
11 Gas pipe
12 Liquid pipe
13 Water inlet pipe to
the humidifier
14 Filter
15 Fan switches
16 Fans
17 Water pan cover
18 Water pump
1
Issue: 02
Date: 2019-01-15
NetCol5000-A021 In-row Air Cooled
Smart Cooling Product
Quick Guide (208 V)

Delivered
materials
Hose clamp, cable ties, snap spring, water detection cable (5 m), liquid leak detection
sensor modular, water pipe or pipe accessories, anchor baffle plate, connect plate,
check valve, combined hexagon head bolts, black self-tapping screw, cord end
terminals, OT terminals
Optional T/H sensors and cables outside cabinets, network cable for teamwork
Purchased
materials Mandatory
Refrige
rant
pipe
Refrigerant pipe components (including copper pipes, thermal
insulation foam, oil traps, and inverted traps) and pipe supports
Water
pipe
Water
supply
pipe
Rigid pipe (1/2-inch BSPT, outer screw thread, made of
PP-R or C-PVC), pagoda connector (BSPT, 1/2-inch,
outer thread connector), hose clamp, hose (for example,
Ethylene-Propylene-Diene Monomer (EPDM))
Drainpi
pe Rigid pipe (1/2 inch BSPT, outer screw thread, made of PP-R or C-PVC), hose clamp, hose (inner diameter of
5/8-inch, for example EPDM), rigid pipe conversion
adapter (5/8-inch outer diameter converting to 1/2 inch
BSPP inner screw thread), thermal insulation foam
Cable Indoor unit power cable, outdoor unit power cable,
outdoor unit ON/OFF signal cable
2Material Preparations
1. Vacuum pump: Flow 2 L/s to 4 L/s, absolute vacuum level ≤ 60 Pa.
2. Pressure gauge and leather hose: Dedicated to R410A, pressure gauge measurement range
≥ 4.0 MPa, and the leather hose tolerance range ≥ 4.5 MPa.
3. Welding torch and welding rod: Silver copper welding rod (5% silver).
4. Nitrogen reducing valve: A reducing valve must be installed on the head of the nitrogen
cylinder, and the reducing valve range ≥ 4.0 MPa.
5. Dry nitrogen.
Special tools and materials
Refrigerant R410A
2.1
Do not use unqualified refrigerant. Huawei will not be liable for any equipment damage caused by
unqualified refrigerant.
Refrigerant from name brands such as DuPont, Daikin, and Honeywell are recommended. You
can verify the refrigerant authenticity in the following ways:
1. Dial the refrigerant manufacturer's hotline to confirm the refrigerant manufacturer authenticity.
2. Place the refrigerant tank indoors for 24 hours. Use a point thermometer to measure the outer
surface temperature of the refrigerant tank (figure 1), and connect a pressure gauge to the tank
to measure the internal pressure (figure 2). Find the saturation pressure corresponding to the
measured outer surface temperature from the table on the next page. 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.
1

(3) (RS485 connection) ON/OFF signal cables for indoor and outdoor units
Indoor unit
terminal X302.1
Indoor unit
terminal X302.2
Indoor unit
terminal X302.3
Outdoor unit
terminal 3
Outdoor unit
terminal 4
Outdoor unit
terminal 5
3 x 1.5 mm2
Cable outer diameter:
7-9 mm
Mapping Between Saturation Temperatures and Pressure of R410A
Saturation
temperature
(°C
)
Gauge
(MPa)
Saturation
temperature
(°C)
Gauge (MPa)
Saturation
temperature
(°C
)
Gauge
(MPa)
10 0.99 18 1.27 26 1.60
11 1.02 19 1.31 27 1.65
12 1.05 20 1.35 28 1.69
13 1.09 21 1.39 29 1.74
14 1.12 22 1.43 30 1.79
15 1.16 23 1.47 31 1.84
16 1.19 24 1.51 32 1.89
17 1.23 25 1.56 33 1.94
(1) Indoor unit power cables (2) Outdoor unit power cables
Cables
2.2
(4) (Dry contact connection) ON/OFF signal cables for indoor and outdoor units
Indoor unit
terminal X301.1 Outdoor unit
terminal 1
Indoor unit
terminal X301.2 Outdoor unit
terminal 2
2 x 1 mm2
Cable outer diameter:
7–9 mm
Active route with heating and
humidification 5 x 10 mm2
16.5–18.5 mm
16.5–18.5 mm
Main power to
the outdoor unit
Power to the
equipment room
5 x 2.5 mm2
13.0–15.0 mm
Cable outer diameter:
Main power to
the indoor unit
Cable outer diameter:
Indoor unit wiring terminal
Standby or without
heating 5 x 6 mm2
16.5–18.5 mm
2
Ensure that there is no reverse or open phase for the input power cable of the smart cooling
product.

Pipe support
Copper Pipes
2.3
Gas pipe Liquid pipe
3/4 inch (19.05 mm) 5/8 inch (15.88 mm)
•1.0 mm for liquid pipes wall thickness, 1.0 mm for gas pipes wall thickness; operating pressure:
≥ 4.5 MPa.
• Thermal insulation foam: thickness ≥ 13 mm.
Oil Traps and Inverted Traps (unit: mm)
2.4
Pipe Supports
2.5
1. Height of the U-shaped clamp H = Pipe diameter (with thermal insulation foam) –5 mm.
2. The material for pipe supports and clamps should meet outdoor application requirements.
3. When the pipe is straight, add a support every 1500 mm. When the direction of the pipe is
changed, add a support at the position that is 500 mm away from the changing point.
For the outdoor concrete base dimensions, see chapter 4.
Bases
2.6
3
Oil trap Gas pipe inverted trap Liquid pipe inverted
trap

1. Read the instructions for product information before installation.
2. Use fully insulated tools during installation and operation.
3. Only engineers certified by the manufacturer or its agents are allowed to install, commission,
and maintain the smart cooling product. Personal injury or damage to the equipment may occur
in the event of improper handling. Damage incurred in such a manner is beyond the scope of
the equipment's warranty.
4. Keep the equipment upright during transportation. Tilting is forbidden.
5. Qualified electricians and welders are required.
6. Do not use a refrigerant or refrigerant oil of poor quality.
7. The indoor and outdoor units can be installed simultaneously.
8. If the smart cooling product needs to be installed on a rack or an ESD floor, the ESD floor
should be raised at least 250 mm high.
9. If multiple smart cooling products are involved during the process, label cables and copper
pipes to ensure that they are correctly connected between indoor and outdoor units.
10.The humidifier water inlet pipe connects to running water or other water supply systems, and
the drainpipe connects to the drainage system.
3Installing the Indoor Unit
Low-pressure
needle valve
Liquid pipe
needle valve
Discharge pipe
needle valve
Remove the bonnets, and press each
bonnet onto the corresponding valve plug.
2. Check the air pressure.
1. Remove the air filter.
4

3. Remove the cabinet fastener bolts. 4. Install the transport tool.
Transport tool
b. Install the transport tool.a. Remove the tool cover.
Cover bolt (removed
before installation)
Cover side hole (aligned
with the cabinet mounting
hole during installation)
5

5. Remove transport fasteners from the
compressor.
Loosen the transport fixing bolts, take out the
fasteners under the bolts, and tighten the bolts
using a torque wrench.
c. Secure the transport tool.
6
6. (Optional) Remove the liquid level detector
transport sheet metal fastener.
a. Remove a water pan cover and the
sheet metal fastener.
If the smart cooling product is configured
with no condensate pump, skip this step.
NOTE
b. Connect the interconnection terminal of
the low liquid level detector.
Reinstall the water pan cover to the previous
position after connecting the interconnection
terminal.
NOTE
Secure the transport tool and raise
anchor bolts. After the device is moved to
the installation position, adjust the anchor
bolts till they are on the floor and then
remove the transport tool.

7
7. Level feet. 8. (Optional) Install the enclosure frame on the
front door side.
a. Remove the front door and remove the
ground cable, bolt, connecting kits, and
hinge.
b. Install the enclosure frame. After securing
the removed components with the
enclosure frame, install the front door.
9. (Optional) Combine cabinets.
The front and rear doors are combined in the
same way.
10.(Optional) Secure the smart cooling
product on the floor.

8
Scenario 1: Horizontal Installation (unit: mm)
4Installing the Outdoor Unit
1. Dimension requirements for concrete base
Model NetCol500-A026
W1 ≥250
D1 ≥250
H150–250
W2 814
D2 924
•Install anchor baffle plates only when you need to secure the indoor unit to a base.
•Baffle plates for the front and rear doors are installed in the same way.
NOTE
11.(Optional) Install anchor baffle plates.

2. Space requirements (top view) 3. Procedure for horizontal installation
a. Remove the 4 angle brackets.
9
b. Install the 4 feet using 24 M6x16 screws
available in the fitting bag. c. Secure the feet to the concrete base using
8 M8x80 expansion bolt available in the
fitting bag.

Scenario 2: Vertical Installation (unit: mm)
Model NetCol500-A026
W1 ≥250
D1 ≥500
H150–250
W2 1024
1. Concrete base dimensions and vertical installation
Use 4 M6x16 expansion bolts to secure the 4 angle brackets to the floor.
10
2. Space requirements (top view)
5Indoor and Outdoor Unit Connection Diagrams
1. The compressor base is regarded as the baseline of the indoor unit for calculating height
difference.
2. An inverted U-shaped trap must be higher than the top copper pipe of the condenser.
3. is the sign of a tilt. The pipe tilting direction must be consistent with the hypotenuse of the
right triangle. A pipe tilt must be at least 1: 200.
4. H should not exceed 20 m.
Scenario 3: Bases Installation (Unit: mm)
For the base installation procedure, see the outdoor unit user manual.
(1) Aligning holes (use M10 welding nuts or hexagon nuts)

(1) Tilted gas pipe (2) Inverted traps (3) Oil traps (4) Tilted liquid pipe
11
6Welding Pipes
1. Do not remove the valve plug when exhausting nitrogen.
2. During the welding process, charge a little nitrogen into the pipes to avoid impurity caused by
internal oxidation.
3. When welding the pipes connecting the indoor and outdoor units, protect the needle valve and its
tag.
4. During welding, take measures to protect the cables around.
5. No face-down bonding.
6. Avoid poor welding.
7. Do not expose welding positions to the environment for a long time. Seal the welding positions. If
foreign matter exists in a welding position, remove it using absolute alcohol or damp cloth and
wait until the position is dry before welding.
8. When welding pipes, ensure that the pipes are dry. Welding the pipes between the indoor and
outdoor units; then welding the two ends of the pipe to the indoor and outdoor units.
9. Each time a pipe in the middle is welded, shock the welding position to remove the clinker and
charge high-pressure nitrogen into the pipe to remove the foreign matter inside.
Wall
Pipe
Pipe support

Thermal insulation foam Gas pipe
Liquid pipe
Liquid
pipe
needle
valve
Discharge pipe needle valve
Low-pressure
needle valve
Liquid pipe Gas pipe
Remove the bonnets of the liquid, low-pressure,
and needle valve of the discharge pipes in turn.
1. Exhaust nitrogen.
a. Use the weld gun to remove the
closures from the refrigerant pipes.
b. Weld the two straight pipes available in
the fitting bag to the gas and liquid
pipes.
2. Connect refrigerant pipes.
12
3. Outdoor unit exhausting nitrogen and connection diagrams

Connecting the Drainpipe
7.3
13
Use a flat-head screwdriver to remove the
hose clamp from the pipe and take out the
hose delivered with the smart cooling product.
Secure the hose to the drainpipe using a
hose clamp.
Drainpipe Route
7.4
Bottom pipe routing
7Connecting Water Pipes
(Optional) Connecting the Water
Supply Pipe to the Humidifier
7.1
(Optional) Route of the
Humidifier Water Inlet Pipe
7.2
Top pipe routing Bottom pipe routing
The following figures show how to connect
pipes. Select a connection method based
on the actual situation.

Connecting the Indoor Unit Power Cable
8.1
8Connecting Cables
•The equipment must be grounded in accordance with local electric regulations.
•Keep cables away from compressors, fans, and copper pipes (if unavoidable, take protective
measures), and connect the cables securely.
•The figure uses dual-input power supply as an example. For the single-input power supply
scenario, only AC1 and one ground screw need to be connected.
•The cables should be routed in from the cable clip.
•The strong-current cables and the weak-current cables must be routed through separate
holes.
14
Route the cable through the cable
protecting ring at the top or bottom.
Top cabling Bottom cabling
Remove the water pipe
plug from the top of the
NetCol5000-A and connect
the drainpipe using an
adjustable wrench.
Top pipe routing

Connecting the Outdoor Unit Power Cable
8.2
Top cabling Bottom cabling
Connect one end of the cable to the AC3 terminal on the electric control box of the indoor unit (PE
cable to the PE screw on the right of AC3), and the other end to the outdoor unit terminal block.
The cable can be routed through a top or bottom cable hole.
15
Connecting the Signal Cables, Water Sensor
8.3
1. Outdoor unit signal cables can be connected to dry contacts or RS485 ports. Signal cables are
connected to RS485 ports by default (the Outdoor fan control mode is set to Communicate
by default). If signal cables are connected to dry contacts, set Settings > System Settings >
Outdoor Fan > Outdoor fan control mode to Dry contact.
2. If signal cables are connected to dry contacts while the Outdoor fan control mode is set to
Communicate, Outdoor fan communication failure will be displayed on the screen.
3. If signal cables are connected to RS485 ports while the Outdoor fan control mode is set to
Dry contact, Comp discharge HP will be displayed on the screen after the compressor starts
working because the indoor unit cannot control the startup of the outdoor fan.
1. Indoor wiring
2. Outdoor wiring

1. Connect signal cables.
•(RS485 connection) Connect one end of the signal cable to ports 1, 2 and 3 of the terminal
with the X302 silk screen on the electrical control box, and connect the other end to ports 3, 4
and 5 on the outdoor unit.
•(Dry contact connection) Connect one end of the signal cable to ports 1 and 2 of the terminal
with the X301 silk screen on the electrical control box, and connect the other end to ports 1
and 2 on the outdoor unit.
2. Connect the two terminals of the water sensor cable to ports 7 and 8 of the terminal with the
X301 silk screen on the electric control box.
3. Bind the cables with cable ties.
Top cabling Bottom cabling Top cabling Bottom cabling
Dry contact connection
RS485 connection
The humidity and temperature sensor must be
1.5 m above the floor. Connect the T/H sensor
outside the cabinet and the T/H sensor at the
return air side in series, and bound with cable
ties or other fasteners. Each smart cooling
product supports three humidity and
temperature sensors in cold aisles and the
other three in hot aisles at most.
Connecting the Humidity and Temperature Sensor Outside the Cabinet
8.4
16
For the
cold aisle
For
the
hot
aisle

Name Address DIP Switch Sequence No.
1 2 3 4 5 6
Return air T/H 1 1 ON OFF OFF OFF OFF OFF
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 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
DIP Switch Instructions
1FE_1 (Master port)
2CAN_IN (Input port of the
teamwork CAN and northbound
RS485 ports)
3RS485/12V (T/H module port)
4Main control module handle
5SW (Reserved)
6DIP switch
7 COM (Northbound RS485 port)
8CAN_OUT (Output port of the teamwork CAN and northbound
RS485 ports)
9 FE_2 (Spare port)
10 Alarm indicator
11 Run indicator
12 Power indicator
Introduction to the Main Control Module
(Optional) Operation Guide for Teamwork Connection
8.5
17
FE_1
Smart ETH
gateway
PoE
Smart cooling
product
Teamwork Control over a FE Port
The figure shows how an FE network cable is prepared.

Toggle
Switch
Default
Value
Site Operations
1
OFF
•
Non-teamwork control: remaining OFF.
•
Teamwork control: Flip toggle switch 1 of the first and last precision smart
cooling products in the network to ON, and toggle switch 1 of other smart
cooling products to OFF.
2
ON
Northbound RS485 branch switch, for controlling the
monitoring of northbound
devices by group. If you need to
enable the monitoring of northbound devices
by group, flip
toggle switches 2 and 3 to OFF.
3
ON
4
OFF
This toggle switch controls whether to restore factory
defaults. Retain the
default value (OFF) of this switch.
18
In CAN networking, one teamwork network supports a maximum of 32 smart cooling products. The
following figure shows the teamwork connections between 32 smart cooling products.
The teamwork networking mode is CAN networking.
Teamwork Control over a CAN Bus
The figure shows how a CAN network cable is prepared.
The figure shows how a Northbound RS485 network cable is prepared.
Set the DIP switches on the main control board as follows.

When the host monitors smart cooling products using the RS485 protocol, the time needed for
collecting all data from a single smart cooling product is 3 seconds. In the teamwork mode of
cascading using an RS485 bus for monitoring, it takes the host 3 seconds multiplied by N to collect
data from N smart cooling products in the group. If the host needs more time to collect data from all
smart cooling products than what the host performance requires, the smart cooling products can be
grouped for data collection. Assume that the host needs to collect the data from all smart cooling
products within 12 seconds you are advised to incorporate four smart cooling products in one group
and connect the COM port of the first smart cooling product for each group to an RS485 port on the
host. The following figure shows how 32 teamworked smart cooling products, four in each group, to
connect to the hosts.
19
1. If 32 smart cooling products are teamworked, every four smart cooling products are included in
one group, which then connects to an independent RS485 port on the host.
2. Set toggle switch 1 for smart cooling products 1 and 32 to ON. Set toggle switches 2 and 3 for
the last smart cooling product of each group (namely, smart cooling product 4, smart cooling
product 8, …, smart cooling product 28) both to OFF, except the smart cooling product in the
end, that is, smart cooling product 32. Retain the default settings of other toggle switches.
Users can adjust the number of smart cooling products under one group based on the performance
requirements.
NOTE