Huawei NetCol8000-E220 User manual

1Overview
1
Item
NetCol8000
-E220
Power
380
-415 V AC, 3 Ph, 50Hz
Net weight
NetCol8000
-E220DM0AA: 5150 kg
NetCol8000
-E220DM0BA: 5700 kg
Dimensions (H x W x D)
6058 mm x 2438 mm x 3600 mm (excluding an air duct)
Optional components
Air duct
assembly, temperature and humidity sensor
Issue: 03
Part Number: 31500BMA
Date: 2020-02-25
NetCol8000-E220 Modular Indirect
Evaporative Cooling System
Quick Guide
(1) Outdoor air outlet port
(5) Condensate
drainpipe 1
(9)
Spray water refill pipe
(2) Electric control
box (The
52273922 has a single door,
and 52273922
-001 has two
door.)
(6) No.
2nd maintenance
door
(10) Outdoor air intake port (on the side)
(3) Display
(7)
Condensate drainpipe 2
(11) No
.3rd maintenance door
(4) No.
1stmaintenance door
(8)
Spray drainpipe
External Components
Copyright © Huawei Technologies Co., Ltd. 2020 All rights reserved.

2
Internal Components
(1) Outdoor air outlet port
(7) Compressor
(13) Outdoor air intake port
(at the end)
(2) Electric control box
(8) Pump
(14)
Indoor air return port
(3) Indoor air supply port
(9) Water inlet and outlet
electric valve
(15) Air return
filter
(4) Indoor
air supply fan
(10) Water tank
(16) Condenser
(5) Evaporator
(11)
Water spraying system
(17) Outdoor air outlet fan
(6) Gas
-liquid separator
(12)
Outdoor air intake port (on the side)
(18) Light
2Preparations
Materials delivered with
equipment
Combined hexagon head bolts, Cable tie, OT ground terminal of the power
cable, condensate trap DN20, drainage drain pipe trap DN40, angle steel
and fixing screws, expansion bolt M16
×150, sealing mud, sealing sheet
metal for water inlet and drainage, self
-tapping nail, T-bolt, color swatch
Optional components
Air duct assembly
, temperature and humidity sensor,etc
Engineering
purchase
Water pipe
•
Spray water refill pipe: G 3/4 inch outer screw thread (DN20)
•
Spray drainpipe: G 1-1/2 inch inner screw thread (DN40)
•
Condensate drainpipe: G 3/4 inch inner screw thread (DN20)
Cable
•
Power cable: 4 x 70 mm²(L1/L2/L3/N) + 35 mm²(PE), active and
standby power cablesa
•
OT terminal: 35 mm², M10, 6 PCS
•
OT terminal: 70 mm², M10, 14 PCS
•
Ground cable: 35 mm², 2 PCS
•
Cable tie: 10 PCS
a:
Only active and standby power cables are usually used. If you need to separately power the
compressor, an external cooling power supply is required.
Special Tools
2.2
Indoor installation scenario: Crane (lifting capacity ≥10T), ground tank, electric forklift (with long arm)
Outdoor installation scenario: Crane (lifting capacity ≥10T)
Preparing Materials
2.1

3
Do not use inferior refrigerant. Otherwise, Huawei has no responsibility for the damage caused by
the inferior refrigerant.
Follow these suggestions to choose a high-quality refrigerant:
1. Dial the hotline of the refrigerant producer to confirm its reliability.
2. Put the refrigerant indoor for 24 hours. Then use a thermometer to measure the external
surface temperature of the refrigerant cylinder (Figure 1), and connect a pressure gauge to the
cylinder to measure its internal pressure (Figure 2). Look up the following table for the
saturation pressure that corresponds to the external surface temperature, and calculate the
deviation from the internal pressure. If the deviation is more than 0.2 MPa, the refrigerant is not
in good condition. Replace it.
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 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 2.04
18 1.27 27 1.65 36 2.10
Refrigerant R410A
2.4
Requirements for Maintenance Space
2.3
Unit: mm
Wall
Electric control box

4
(Optional) Concrete Platform Scenario
3.1
1. According to the site space and device
dimensions to decide the location of concrete
platforms. And mark the four reference points of
concrete platforms using an ink fountain and
measuring tape.
When marking the mounting positions for concrete platforms, ensure that the four lines form a rectangle.
Concrete
platform
Unit: mm
3Securing the NetCol8000-E
1. Read the related user manual before installing the device.
2. Ensure that the concrete platform levelness meets the requirements before installation.
3. The device must be installed strictly according to the heating ventilation air conditioning (HVAC)
equipment construction regulations.
1. When the equipment is installed indoors, it is recommended that shock pads be installed
between the air duct and the floor.
2. When the equipment is installed outdoors, it is recommended that the air duct be secured on the
concrete platform (as shown in the following figure) to prevent rain from soaking the air duct.
Unit: mm

2. Connect the steel hoisting ropes, and hoist the device onto the concrete platforms.
4. Secure the equipment to the concrete platform using four right angle brackets.
Indoor scenario
3. Use M12 screws to secure the air duct to the floor or concrete platform.
Outdoor scenario
5

(Optional) Steel Base Scenario
3.2
(1) M20 T
-shaped bolt
(2) 15 mm steel plate
(3) Rectangular tube (100 mm x 100 mm x 6
mm)
(4) Reinforced angle plate (right angle edge: 80
mm x 50 mm, 15 mm thick)
(5) Expansion bolt (M16 x 150 mm)
(6) 14B# channel steel
6
1. Prepare a steel base.
Steel base
1. When the equipment is installed indoors, it is recommended that shock pads be installed
between the air duct and the floor.
2. When the equipment is installed outdoors, it is recommended that the air duct be secured on the
concrete platform (as shown in the page 4) to prevent rain from soaking the air duct.
Unit: mm

7
4. Turn the four M20 twistlocks in the base by 90 degrees to lock the equipment, and tighten the
twistlocks using a torque wrench.
2. Connect the steel hoisting ropes, and hoist the device onto the concrete platforms.
3. Use M12 screws to secure the air duct to the floor or concrete platform.
Indoor scenario Outdoor scenario

8
Installing a ground lug
Installing a ground cable
1. Remove the packaging.
4Installing Air Ducts
(Optional) Installing a Supply Air Duct
4.1
Grounding the NetCol8000-E
3.3
•Ground lugs mode: Before the installation, remove the tinfoil from the ground lugs.
•Ground cables mode: Ground cables can be routed through plastic-coated metal hoses for
protection based on site requirements.
NOTE

9
4. Push the stitched air channel into the bottom of the device. Remove the canvas sheet metal
from the end of the air duct using diagonal pliers.
2. Remove the thread plates. 3. Remove the eight screws that fasten the air
vent baffle, and remove the air vent baffle.
5. Put thermal insulation foam between the equipment and the air channel connection surface, and
fix the equipment and air channel by twenty-four M6 fixing screws.
Ensure that there is no air leakage on the contact between the equipment and the air duct.
Otherwise, condensate water may occur.
NOTE
Connection between the
air duct and equipment
(A) Canvas sheet metal
(B) Canvas
(C) Thermal insulation foam
(D) Equipment

10
6. Wrap the rubber plastic thermal insulation foam (at least 3 cm thick, covering the aluminum foil)
for the canvas.
Installing a Return Air Duct
4.2
(1) Flexible connection (canvas or other materials; prepared onsite)
(2) Hard connection (foaming plate; prepared onsite)
5Connecting Water Pipes
1. Connect the water pipes using thread connectors. The thread joints need to be sealed with raw
materials or thread adhesive.
2. Clean the external water pipes before connecting them to the water inlet and outlet pipes of the
coil pipes of the NetCol8000.
3. Connect the water inlet and outlet pipes of the NetCol8000 using thread connectors. When
connecting the water pipe, do not exert excessive force to prevent damage to the coil pipe.(When
connecting the pipes provided with the NetCol8000, use two pipe wrenches or chain pliers.)
4. Heat preservation measures must be taken at low temperatures to prevent water from freezing in
the water pipe.
5. The drainpipe must be wrapped with thermal insulation foam (including the buried parts).
NOTE
Thermal insulation foam

(1) Condensate drainpipe 1 (DN20)
(2) Condensate drainpipe 2 (DN20)
(3) Spray drainpipe (DN40)
(4) Spray water refill pipe (DN20)
11
Sealing putty
Paper protective film
2. Remove the paper protective film from the sealing putty.
3. Seal the gap between the water pipe and the equipment
using sealing putty after the pipe is correctly connected.
1. Installing Water Pipes
4. Condensate drainpipes and water refill pipes may freeze and thereby be blocked or crack in low-
temperature areas. Anti-freezing measures must be taken for the pipes.
(1) Trap
(2) Electric heating belt
(3) Water refill pipe
(4) Drainpipe (The end needs to be
connected to the utility drainpipes.)
(5) Soil
5. Wrap the electric heating belt before wrapping the thermal insulation foam. The thermal insulation
foam must be able to withstand a temperature higher than 200°C.

Connecting Power Cables and Signal Cables
6.1
12
No.
X501
X502
X503
1
Smoke sensor power
supply (12 V DC
)+
Water leakage detection
(water
leakage in the floor
)
485+
(micro differential
pressure sensor)
2
Smoke sensor
feedback–
Water leakage
detection (water
leakage in the floor
)
485
–(micro differential
pressure sensor)
3
Port for remote startup and
shutdown+
N/A
GND
4
Port for remote startup and
shutdown
–
N/A
12V+
5
Port 1+ for reporting
common alarms
N/A
N/A
6
Port 1
–for reporting
common alarms
N/A
N/A
7
Port 2+ for reporting
common alarms
N/A
N/A
8
Port 2
–for reporting
common alarms
N/A
N/A
6Connecting Cables
1. All power cables and ground cables must comply with local national standards.
2. For details about electrical ports, see the NetCol8000-E220 Modular Indirect Evaporative
Cooling System User Manual.

After the addresses are set, power on the
device. On the display's home screen, choose
Settings > System Settings > T/H Sensor, and
set the sensors in the aisles corresponding to
the addresses to Enable. Otherwise, the
sensors will not work.
13
The following figure shows the position of the
return air temperature and humidity sensor in
the smart cooling product. The cable passes
through the cable hole to remote T/H sensor.
Set the sensor positions based on their location
and the following table.
1. Connect the T/H sensor cables.
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
2. Set the DIP switches on the T/H sensors.
8Post-Installation Check
(1) FE_1
(input and output port on the FE ring network)
(2) CAN_IN (input port of the teamwork CAN/northbound
RS485 port)
(3) RS485/12 V (T/H module port)
(4) USB (USB
port)
(5)
DP (connected to the display port)
(6) COM/FE (northbound RS485 port)
(7) CAN_OUT (output port of the teamwork CAN/northbound
RS485 port)
(8) FE_2 (input and output port on the FE ring network)
(9) SW (for restoring factory settings)
(10) Alarm indicator
(11) Run indicator
(Optional) Connecting T/H Sensors Outside Cabinets
6.2
(Optional) Connecting Teamwork Network Cable and Monitoring Cable
6.3

14
CAN teamwork networking (CAN Protocol)
1. Prepare the 8pin 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.
RS485 Monitoring Network Cable (Modbus-RTU Protocol)
1. Make the COM network cable by referring to the following figure.
Except for pins 4 and 5, the
cable of other pins must be cut
off to prevent interference.
•If there is no teamwork control, connect the COM/FE port on each smart cooling product to the
customer's monitoring system.
•In CAN networking and no grouping, connect the COM/FE port on the last smart cooling product
to the monitoring device. After powering on the device, set the "RS485 monitoring grouping" of
the last smart cooling product to "Enable". Setting path: Settings > Comm Settings > Modbus
Settings.
2. Group smart cooling products for monitoring based on performance requirements and connect
the monitoring network cables.

15
•In CAN networking and grouping, connect the COM/FE port on the last smart cooling product in
each monitoring group to the monitoring device. After powering on the device, set the "RS485
monitoring grouping" of the last smart cooling product in each monitoring group to "Enable".
Setting path: Settings > Comm Settings > Modbus Settings.
FE Monitoring Network Cable (SNMP/Modbus-TCP Protocol)
Connect one end of the monitoring network cable (standard network cable) to the FE_1 port or
FE_2 on the main control module, and connect the other end to the monitoring device.
This wiring method applies to the smart module scenarios or other scenarios with LAN switches
regardless of teamwork networking.

16
Removing Compressor Fasteners
7.1
7Removing Compressor Fasteners, Air Filter Protective
Cover, Desiccant and Elastic Cords
Taking Out the Desiccants near the Position Shown in the Figure
7.2
Removing the Air Filter Protective Cover
7.3
Outdoor intake air filter (at the end)
Outdoor intake air filter (on the side)
Outdoor intake air
filter (on the side)

Checking Nitrogen
7.5
Low-pressure
needle valve 1
Low-pressure
needle valve 2
Liquid pipe
needle valve 1
Liquid pipe
needle valve 2
Removing Elastic Cords on The Floats
7.4
Remove the screws from the air filter, and remove the air filter. Remove the air filter cover and
refasten the air filter. Close all the maintenance doors and install the air filter on the air intake vent
on the outdoor side.
17

18
8Post-Installation Check
Item
Content
Result
Cabinet
The cabinet is installed properly, without any tilt.
The cabinet should be
secured.
The foreign matter inside the cabinet such as cable ties and cable cuts is
cleaned up
.
□
Passed
□
Failed
Fan
The fan is secured.
The fan has no foreign matter inside. The fan blades rotate
properly.
□
Passed
□
Failed
Water system
The water pump is securedreliablyand steadily. The water filter is secured
reliably and steadily. The float is secured. The sheet metal fasteners are secured
reliably. The
high and low
liquid level detector moves smoothly, and elastic cords
are removed from the high and low floats. The water inlet pipe and drainpipe are
connected securely without leakage.
□
Passed
□
Failed
Electrical
features
Cables are intact and free from sharp bends. No open or short circuit, or
incorrect connection occurs in electrical loops. The power cables, signal cable,
teamwork control cable, and the T/H sensor cable for the smart cooling product
are connectedas required. The rated specifications of the upstream general
switch meet the maximum current requirement. All cables, connectors, and
screws are secured. Devices are properly grounded.
□
Passed
□
Failed
Water pan
The foreign matter inside the water pan is cleaned up, and water pan filter is not
blocked.
□
Passed
□
Failed
Compressor
The transport fasteners of the compressor are removed. The bolts on the
compressor are tightened.
□
Passed
□
Failed
Refrigerant
pipe
All pipes are wrapped with thermal insulation foam, and the insulation foam is
intact. The needle valve plug is secured (torque of 0.45
±0.05 N.m.), and valve
bonnet is tightened.
□
Passed
□
Failed
Air filter
The air filter is correctly installedaccordingto the air flow direction on the frame.
T
he protective cover of the air filters is removed.
□
Passed
□
Failed
9Leak Checking, Vacuuming, and Precharging Refrigerant
Charge 3.0 MPa nitrogen and preserve the system for 24 hours. If the ambient temperatures
before and after the preservation are similar, the system pressure should not drop. If leaks occur
after the preservation, check them along the pipe, especially at the welding positions, needle valve,
and angle valve.
The vacuuming time should be 80 minutes at least and the final pressure (absolute pressure) should
be 60 Pa at most. When the pressure stops dropping, pump for another 10 minutes. After the
vacuumization, close all the vacuum pump and valves. Preserve the system for another 10 minutes
and the pressure (absolute pressure) should be 90 Pa at most. If the pressure gauge cannot be
precise at 60 Pa, ensure that the pressure is displayed at the minimum scale. Extend the preservation
time to one hour. Then check whether the pressure displayed on the pressure gauge increases.
Leak Checking
9.1
Vacuuming
9.2
1. Remove the vacuum pump from the vacuuming equipment, and replace the vacuum pump with a
refrigerant steel vessel.
2. Partially open the refrigerant steel vessel valve and rubber tube nut. Tighten the nut when you
feel cold air coming out from the nut.
3. Put the refrigerant steel vessel upside down on an electric balance. Clear the reading on the
balance.
Precharging Refrigerant
9.3

19
4. Open pressure gauge valves, and the refrigerant steel vessel valve to charge refrigerant (the
amount of refrigerant precharged is not less than 4 kg for each system, and the total amount of
refrigerant charged is 8 kg for each system).
5. After refrigerant charging, close pressure gauge valves, and the refrigerant steel vessel valve.
If the R410A refrigerant is provided by Huawei, put the refrigerant steel vessel upside down when
charging in the refrigerant. If the refrigerant is not provided by Huawei, check with the refrigerant
provider whether the steel vessel has a siphon. If the vessel has a siphon, put it upside up when
charging in refrigerant. If the vessel has no siphon, put it upside down when charging in refrigerant.
These measures ensure that the refrigerant is charged in the liquid form.
10 Power-On
Power-On
10.1
•Users are classified into admin and operator. The preset password is 000001 for both types of
users.
•After powering on, the smart cooling product is in shutdown mode.
•After powering on, the compressor starts preheating, and the system generates an alarm
indicating that the compressor is preheating (for 12 hours). Do not start the smart cooling product
before the preheating ends. Choose Running > Device Details > Compressor to query the
remaining preheating time.
Vacuum pump
Refrigerant
cylinder
Electronic scale Nitrogen cylinder
1. Leak checking
2. Vacuuming
3. Precharging refrigerant
Nut
Reducing valve
Low-
pressure
needle
valve
Liquid pipe
needle valve
Pressure
gauge

No.
Item
Teamwor
k group
No.
Air
condition
er
address
Enable
teamwor
k CAN
resistor
Teamwo
rk
function
Networking
mode
Number of
air
conditioners
in this group
Number of
running air
conditioner
s
in this group
Rotation
function
1 1 1 Yes Enable CAN
network 8
6 (2 standby)
Enable
2 1 2 No Enable CAN
network / / /
3
1 3 No Enable CAN
network / / /
... ... ... ... ... ... ... ... ...
7 1 7 No Enable CAN
network / / /
8 1 8 Yes Enable CAN
network / / /
20
1. Switch on the switch in the upstream power distribution cabinet (PDC).
2. Turn on all switches on the device.
3. After the device is powered on for the first time, the LCD displays the Quick Settings screen. Set
parameters as instructed, such as language, date format, date, time, time zone, teamwork
settings, system settings (smart diagnosis function, compressor cooling, and DO association),
temp & humid setting (control type, temp setting point, humid setting point, enable cold aisle 1–
5, enable hot aisle 1–5). If the device is not powered on for the first time, the home screen is
displayed.
4. (Optional) Setting teamwork control parameters.
The table uses 8 devices in CAN teamwork as an example.
a. Teamwork group No.: A maximum of four groups, with the same teamwork control number, can
be assigned (1–4) for one teamwork networking.
b. Air conditioner address: In a teamwork control group, each address (1–32) must be unique, and
the device with minimum address is the master one.
c. Networking mode: The networking mode set on the screen must be consistent with the actual
networking mode.
d. Enable teamwork CAN resistor: Set the parameter if CAN teamwork is used. Set the parameter
to ON for the first and eight devices.
e. Number of air conditioners in this group: Indicates the number of devices in a group. The value
is an integer ranging from 1 to 32.
f. Number of running air conditioners in this group: Specifies the number of running NetCol8000-
Es in a group. The value ranges from 1 to the number of NetCol8000-Es in the group.
g. Rotation function: Enable the active and standby devices to work alternately. This function is
recommended when the heat load is even.