Huawei NetCol5000-A-035 User manual

1Overview
Indoor Unit NetCol5000-A 35 kW
Power 380–480 V AC 3 Ph 50/60 Hz
Airflow 6800 m3/h
Pipe routing Overhead or underfloor piping
Standard Dimensions (H x W x D) 2000 mm x 600 mm x 1100 mm
Net weight 350 kg
Optional components Electric heater, humidifier, condensate pump
Outdoor Unit NetCol500-A036 NetCol500-A072
Power 380–480 V AC 3 Ph 50/60 Hz 380–480 V AC 3 Ph 50/60 Hz
Airflow 12000 m3/h 26000 m3/h
Net weight
NetCol500
-A0365C: 130 kg
NetCol500
-A0365S: 147 kg
185 kg
Dimensions D = 1094 mm, W1 = 1370 mm, W2 = 1220
mm, H1 = 1160 mm, H2 = 714 mm D = 1094 mm, W1 = 2200 mm, W2 = 2050 mm, H1 = 1100 mm,
H2 = 654 mm
Optional components Low temperature component Sunshade
(1) Manual water drain
button
(2) Electric control box
(3
) Sight glass
(4
) Compressor
(5
) Dryer filter
(6
) Refrigerant liquid
pipe
(7
) Self-drainpipe
(8
) Refrigerant gas
pipe
(9
)
Condensate pump
drainpipe
(10
) Condensate
pump
(11
) Oil glass
(12
) Thermostatic
expansion valve
(13
) Humidifier
(14
) Evaporator
(15
) Fan
(16
) Electric heater
(17
)
Compressor drive
Copyright ©Huawei Technologies Co.,Ltd.2019. Allrights reserved.
1
Issue: 08
Date: 2019-01-15
NetCol5000-A035 In-row Air Cooled
Smart Cooling Product
Quick Guide

NetCol500-A036 NetCol500-A072
2
Materials
Configured
with the
Equipment
Cable ties, OT terminals, cord end terminals, voltage jumpers, water sensor and their
components, teamwork cable, hose clamps, pipe accessories, expansion bolts, and
a humidity and
temperature (T/H) sensor.
Engineering
Procurement
Mandator
y item
Refrigera
nt pipeline
Pipe components (including copper pipes, thermal insulation
foam, oil traps, and inverted traps) and pipe supports.
Waterway
Thermal insulation foam and hard pipe conversion adapters
(BSPT 1/2 in., connecting to external threads) + hard pipes
(using PP
-R or C-PVC materials) or pagoda connectors +
hoses (inner diameter: 3/4 in., using EPDM materials),
thermal insulation foam on waterway.
Cable
Power cables and on/off signal cables for the indoor and
outdoor units.
Optional
item
Cable and
base
Humidity and temperature sensors and cables outside the
cabinet, indoor unit racks (determined by actual scenarios),
and outdoor unit racks or concrete bases (determined by
actual scenarios).
Special
Tools and
Materials
•
Vacuum pump: 7.2-14.4 m³/h, absolute vacuum ≤ 60 Pa (recommended).
•
Pressure gauge (measure range is greater than 4.0 MPa
), leather hose (tolerance
range is greater than 4.5 MPa), dedicated for R410A.
•
Welding torch and welding rod: silver copper welding rod (containing 5% silver).
•
Nitrogen reducing valve: Areducing valve is recommended to install to the outlet
of the nitrogen steel vessel, and the reducing valve range ≥ 4.0 MPa.
•
Dry nitrogen.
2Preparing Materials

Do not use inferior refrigerant. Otherwise, Huawei has no responsibility for the damage caused
by the inferior refrigerant.
You are suggested to use R410A from the brand of Dupont, Daikin, Honeywell, or the same
quality refrigerant, and 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.
Refrigerant R410A
2.1
Mapping between saturation temperatures and pressure of R410A
Saturation
Temperature (ºC)
Gauge
(
MPa)
Saturation
Temperature (ºC)
Gauge
(
MPa)
Saturation
Temperature (ºC)
Gauge
(
MPa)
10 0.99 16 1.19 22 1.43
11 1.02 17 1.23 23 1.47
12 1.05 18 1.27 24 1.51
13 1.09 19 1.31 25 1.56
14 1.12 20 1.35 26 1.60
15 1.16 21 1.39 27 1.65
28 1.69 31 1.84 34 1.99
29 1.74 32 1.89 35 2.05
3

If you use a five-core power cable for indoor unit, do not install the neutral wire. Instead, cut off it
and properly wrap PVC insulation tape around the cutting place.
Mains power to
the indoor unit
Power to the
equipment room
Mains power to
outdoor unit
Indoor unit
terminal X2.5 Outdoor unit
terminal 1
(1) Indoor unit power cable (2) Outdoor unit power cable
(3) On/Off signal cables for the indoor and outdoor units (polarity insensitive)
Indoor unit
terminal X2.6 Outdoor unit
terminal 2
Power to the
equipment room
4x6 mm2
Total cable diameter:
16.8–18.0 mm
5x2.5 mm2
Total cable diameter:
13.0–15.0 mm
2x1 mm2
Total cable diameter:
6.4–8.4 mm
Copper pipes should meet
the requirements of
EN12735-1.
(1) Liquid pipe: R410A copper pipe, 5/8 in. outer diameter, 1.0 mm
wall thickness, operating pressure ≥ 4.5 MPa.
(2) Gas pipe: R410A copper pipe, 7/8 in. outer diameter, 1.2 mm wall
thickness, operating pressure ≥ 4.5 MPa.
(3) Thermal insulation foam: thickness ≥ 13 mm.
Oil trap Gas pipe inverted trap Liquid pipe inverted
trap
Materials from which the pipe support and pipe clamp are
made should meet the requirements of outdoor application.
Height of the U-shaped pipe clamp (H) = Diameter of the pip
(including thermal insulation foam) –5 mm.
Cable
2.2
Copper Pipe
2.3
Oil Trap and Inverted Trap
2.4
Pipe Support
2.5
Unit: mm
4

Evaporator
Water
pan
Water tank
Remove
Tighten
Connect
3Installing the Indoor Unit
1. Read the related user manual or instructions before installing the NetCol5000-A.
2. The unit in this document is a fully configured NetCol5000-A. If some components are not
configured, skip the corresponding steps.
3. You are recommended to use tools that are fully insulated when installing devices.
4. 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 the Float Sheet Metal
3.1 Removing the Three Sheet
Metals from the Compressor
3.2
(Optional) Installing an Enclosure Frame
3.3
M8 (3 PCS)
15 N•m
Preserve the removed sheet metals. Reinstall
them if the equipment is to be relocated
(container scenario).
1. Open the front door. Remove the front door,
the power cable of the display screen,
ground cable, fixing plate, connection plates,
and hinges.
2. Move the enclosure frame to the front door,
and adjust the anchor bolts of the enclosure
frame to ensure that the enclosure frame has
the same height with the cabinet.
3. Secure the enclosure frame to the front door
using eight M5 screws, as shown in the right
figure.
5

(Optional) Installing an Top Frame
3.4
4. Secure the top sealing plate of the
enclosure frame to the enclosure frame
using four M5 tapping screws.
5. Install the hinges and connecting plates on the
corresponding positions on the enclosure frame.
6. Install the power cable for the display screen.
Connect the ground cable under the front door
to the enclosure.
After installing the enclosure frame, the power
cable for the display screen may be not long
enough to open the door completely. Cut off
the cable ties, which fastening the power
cable, to make sure the front door can rotate
smoothly.
Install two M5x10 tapping screws (step3) at the front of the top
frame to set up equipotential bonding between the cabinet and
the top frame.
Top pipe routing
Bottom pipe routing
6

This method applies to non-rack installation.
Scenario 1: Non-rack Installation
Adjusting the feet Adjusting the cabinet
Securing the Indoor Unit
3.5
Shock absorbing bar
4-M12x80 assembly screw mounting hole
4-M12x60
expansion screw
mounting hole
Unit: mm
1. Preparing a rack
Scenario 2: Rack Installation
This method applies to rack installation.
7

1. You are advised to use angle steel, square steel or channel steel. Width of 60 mm and
thickness of 4 mm to 5 mm are recommended.
2. When D (width of angle steel) is more than 60 mm, it is interfering with the cable routing holes.
Cut out the part on the angle steel to avoid interfering. If D is less than or equal to 60 mm, skip
this step.
3. Install a shock absorbed bar (5 mm thick, made of EPDM rubber) on the bottom of the rack.
4. Control the welding process and avoid excessive error.
5. The rack is applicable to the scenario with enclosure frames. After enclosure frames are
installed, holes for the screws installed to secure the rack and unit do not change.
3. Securing the smart cooling product on the rack2. Fixing the rack
Secure the smart cooling product on the
rack using four screws removed from the
pallet.
M12x80 (4 PCS)
45 N•m
M12x60 (4 PCS)
45 N•m
4 Installing the Outdoor Unit
Protective cardboard for fins must be removed after installation to protect people from injuries.
8

2. Concrete Base Dimensions (Unit: mm)
Model
W1
W2
D1
D2
H
NetCol500
-A072(036)
≥ 250
1877 (1047)
≥ 250
924
150
–250
Low
-temperature Component
≥ 600
210
≥ 400
130
150
–250
M12x60 (4 PCS)
45 N•m
3. Dimensions of the Concrete Base and Securing
Low-temperature Component
The distance from the low-temperature component to the outdoor unit can not exceed 2 m.
unit: mm
Scenario 1: Horizontal Installation
1. Top View of the Installation Space
9

b. Install the four legs.
c. Secure the legs on the concrete base.
M6x16 (24 PCS)
3 N•m
Model NetCol500-A072 (036)
W1 ≥250
D1 ≥500
H150–250
W2 2090 (1263)
2. Concrete Base Dimensions and Vertical
Installation (unit: mm)
Scenario 2: Vertical Installation
1. Top View of the Installation Space (Unit: mm)
4. Procedure for Horizontal Installation
a. Remove the straight flanges.
10

For the procedure for installing outdoor unit with a rack, see the outdoor unit user manual.
Unit: mm
Scenario 3: Installing outdoor unit with a rack
5Welding Refrigerant Pipes
1. When outdoor unit is installed horizontally, the outdoor unit and the low-temperature component
must be at the same height. When outdoor unit is installed vertically, the outdoor unit must not be
lower than the low-temperature component, and the height difference cannot exceed 1.5 m.
2. When calculating the height difference, the compressor base is regarded as the baseline for the
indoor unit.
3. The inverted trap should be higher than the top copper pipe of the condenser.
4. In the figure, is a sign of a tilt, indicating that the scale of the pipe tilting is at least 1:200. The
pipe tilting direction should be consistent with the hypotenuse of the right triangle.
(1) Inverted traps
(2) Oil traps
(3) Tilted gas pipe
(4) Tilted liquid pipe
Indoor and Outdoor Connection Diagrams
5.1
Bottom pipe routing
NetCol500-A036 NetCol500-A072
11

Pipe
Pipe
support Unit: mm
1. When welding pipes, ensure that the pipes are dry. You are recommended to weld the pipes between
the indoor and outdoor units, then connect the two ends of the pipe to the indoor unit and outdoor unit.
2. After the pipe in the middle is welded, charge nitrogen into the pipe from one pipe end to clear the
foreign matter inside.
3. Do not expose welding positions to the environment for a long time. Take sealing measures for
welding positions. If foreign matter exists at the welding position, rubber it out using non-water alcohol
or damp cloth before the welding.
Liquid pipe
needle valve
Low-
pressure
needle
valve
Discharge
pipe
needle
valve
Wall
Top pipe routing
•Exhausting nitrogen from the three
valves respectively. Do not remove
the valve plug in case of loss.
•The NetCol500-A072 has no
protective sheet metals.
(1) Inverted traps
(2) Oil traps
(3) Tilted gas pipe
(4) Tilted liquid pipe
Exhausting Nitrogen
5.2
12

To indoor unit liquid pipe To indoor unit
gas pipe
To outdoor unit gas
pipe
To outdoor
unit liquid
pipe
Liquid pipe
Gas pipe
Liquid
pipe
Gas pipe
Top pipe routing Bottom pipe routing
Welding the Indoor Unit
5.3
(Optional) Connecting Low
Temperature Component Pipes
(Applied to NetCol500-A036)
5.5
Gas pipe
Liquid pipe
Thermal
insulation
foam
Thermal
insulation
foam
Thermal
insulation
foam
To indoor unit liquid pipe
To indoor unit
gas pipe
To outdoor unit gas pipe
To outdoor unit liquid pipe
•When the outdoor is installed vertically,
gas pipe should be connected to the top
port and liquid pipe should be connected
to the bottom port.
•The NetCol500-A072 has no protective
sheet metals.
Welding the Outdoor Unit
5.4
13

6Connecting Water Pipes
Connecting method
Configuration
Pipes to Be Connected
Remarks
Condensate pump, heater,
and humidifier
Humidifier water inlet pipe,
condensate pump drainpipe,
and self
-drainpipe (optional)
1.
Optional: If there are raised floors
or racks, connect the self-
drainpipe.
Otherwise, you are not required to
connect the self-drainpipe.
2.
The pump lift is 3.5 m.
3.
Condensate pump drainpipe and
self-drainpipe should not be
connected together to avoid water
in the self-
drainpipe flowing back to
the pump.
Condensate pump. No
heater or humidifier
Condensate pump drainpipe
and self
-drainpipe (optional)
Heater and humidifier. No
condensate pump
Humidifier water inlet pipe and
self
-drainpipe
No condensate pump,
heater or humidifier
Self
-drainpipe
(1) Conversion adapter (2) Hard pipe (3) Pagoda connector
(4) Hose clamp (5) Hose (6) Conversion adapter (7) Hard pipe
Self-drainpipe Self-drainpipe
Condensate pump
drainpipe
Condensate pump
drainpipe
Main
waterway Main waterway
(Optional) Installing the Sunshade (Applied to NetCol500-A072)
5.6
14

Either method 1 and method 2 can be adopted.
Adopting method 3
1. When routing pipes from the top, do not
route the pipe over servers. If
unavoidable, take preventive measures
to protect servers from water.
2. Wrap each part of the pipe with thermal
insulation foam.
3. Use supports to secure pipes.
Humidifier
water inlet pipe
Condensate
pump drainpipe
Humidifier
water inlet pipe
Condensate
pump drainpipe
Top pipe routing
Bottom pipe routing
7Connecting Cables
The value on the voltage jumper label
should match the mains voltage.
Connecting Humidifier Water Inlet Pipe and Condensate Pump Drainpipe
6.1
Connecting the Self-drainpipe
6.2
Connecting Indoor Unit Power Cable, Water Sensor, and Installing
Voltage Jumper
7.1
15

Ground bar in the
equipment room
(1) Hole for routing
cables to the T/H
sensor
(2) Hole for routing
signal cables
(3) Hole for routing
power cables and
ground cable
Outdoor unit
power supply Indoor unit
power supply
Outdoor unit on/off
signal cable
Water sensor
1. After crimping the power cable of the low-temperature component to terminals, fit it with the
corrugated pipe in the fittings bag, and then connect it to the electric control box of the outdoor unit.
2. It is recommended that cables be deployed in cable troughs.
Heating cable
Connecting the Outdoor Unit On/Off Signal Cable and Power Cable
7.2
(Optional) Connecting Cables of the Low-temperature Component and
the Heater (Applied to NetCol500-A036)
7.3
1. Connecting the cable of the low-
temperature component 2. Connecting the cable of the heater
M4 (8 PCS)
3 N•m
Terminal 1
Terminal 2
1. For different outdoor units, the electric distribution is different, but the silkscreen is the same.
2. This figure shows how to route cables from the bottom. Cables can be routed from holes 1, 2, and 3 when
routing cables from the top.
3. Cables for the outdoor unit should be protected from water and sun exposure. Tubes are recommended for
the protection.
4. The outdoor unit cannot receive power from the indoor unit.
5. The outdoor unit on/off signal cable must connect to terminals 1 and 2. Do not connect the cable to other
terminals, otherwise, the outdoor unit control board would be burnt.
16

1. If teamwork control is
unavailable, you do not need to
connect teamwork network
cables.
2. If teamwork control is available,
connect devices in series
according to the figure.
3. If teamwork control and host
monitoring are available,
connect the host to the first or
last teamwork smart cooling
product using a network cable.
(Optional) Connecting Teamwork Network Cables and Hose Cables
7.4
Method 2 (applicable to the mart ETH gateway scenario)
Method 1 (recommended)
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. For example, the time needed for collecting data
from four smart cooling products is 12 seconds. If the total monitoring time is too long, use the
solution shown in the following figure to connect single smart cooling products to independent
communication ports on the host. Choose the host monitoring mode based on the host parameters.
17

Name
Addr
ess
DIP
Switch ID
123456
T/H 1 at the
return air vent
1
ON
OFF
OFF
OFF
OFF
OFF
T/H 1 at the
cold aisle
11
ON
ON
OFF
ON
OFF
OFF
T/H 2 at the
cold aisle
12
OFF
OFF
ON
ON
OFF
OFF
T/H 3 at the
cold aisle
13
ON
OFF
ON
ON
OFF
OFF
T/H 1 at the
hot aisle
21
ON
OFF
ON
OFF
ON
OFF
T/H 2 at the
hot aisle
22
OFF
ON
ON
OFF
ON
OFF
T/H 3 at the
hot aisle
23
ON
ON
ON
OFF
ON
OFF
Connecting the T/H Sensor Outside the Cabinet
7.6
(Optional) Connecting Monitoring Cable from FE Port
7.5
The T/H sensor should be 1.5 m away from the ground. You can secure a sensor to the cabinet
using cable ties or two M4 screws together with a sheet metal. After the sensor is secured, set the
sensor address according to the following table.
8Verifying the Installation
Item
Check
That
Result
Refrigerant
pipe
Ports are connected properly. The pipeline has oil loops,
reverse U-
shaped
traps
, gradients (of the refrigerant pipes), and supports. Pipes are tightly
secured.
Needle valves are equipped with needle plugs and pipes are
wrapped
with thermal insulation foam, without bends.
□
Passed
□
Failed
Waterway
The water inlet pipes, drainpipes, and
self-drainpipe are securely
connected.
□
Passed
□
Failed
Cable
connection
Cables are not damaged.
Power cables for the indoor and outdoor units
and voltage
jumper, signal cables for the indoor and outdoor unit, water
sensor, and humidity and temperature sensor, and teamwork cables are
properly connected. Cable terminals securely crimp cables, without
crimping the cable shell. Indoor and outdoor units are properly grounded.
□
Passed
□
Failed
18

Item
Check
That
Result
Cabinet
The cabinet is securely fixed on the
rack at the bottom. Foreign matter
inside the cabinet such as cable ties and sundries has been cleaned up.
□
Passed
□
Failed
Compressor
The compressor sheet metals are removed and the bolts are secured.
Coils for the return oil solenoid valve and liquid solenoid valve are securely
fixed.
□
Passed
□
Failed
Float
Sheet metals for fixing the float are removed, the float is properly secured,
wiring terminals are connected, and the float flexibly responds
.
□
Passed
□
Failed
Humidifier
The humidifier water supply pipe and drainpipe are properly connected and
secured, and do not leak.
□
Passed
□
Failed
Fan
The fan is secured, without foreign matter inside
.
□
Passed
□
Failed
Differential
pressure
switch
Cable ties for the differential pressure tube are securely tightened, and the
differential pressure tube is free from foreign matter, blocks, and obvious
bends.
□
Passed
□
Failed
Outdoor unit
The fan blades do not interfere
and protective cardboard for fins are
removed. Bonnets of needle valves and water
-proof connectors are
tightened.
Cables are protected by tubes and the cable outlet faces
downward. Glue is applied to the waterproof connector when the outdoor
unit is placed vertically and the waterproof connector faces upward.
□
Passed
□
Failed
9Calculating the Amount of Refrigerant and Extra Refrigerant Oil
Straight Pipe Equivalent Length
Copper pipe outer diameter 90-degree bend 180-degree bend
5/8 in. 0.3 m 0.6 m
7/8 in. 0.42 m 0.8 m
One-way pipe length = Straight pipe equivalent length + Length of straight pipes between indoor
and outdoor units. The one-way pipe length should be 60 m at most. If the actual length exceeds
60 m, contact Huawei technical support.
One
-
Way
Pipe
Length
(L)
Refrigerant Charge
NetCol500-
A036
NetCol500-036
& low-
temperature
Component
NetCol500-A072 without
copper tube protection sheet
metal
≤ 10 m
Standard charge
(kg) 14 35 16
>
10 m
Refrigerant charge
=Standard charge
+ additional charge
(kg)
= 14
+ 0.14
x (L -10)= 35 + 0.14 x (
L
-10)= 16 + 0.14 x (L -10)
Refrigerant Charge of NetCol5000-A035
9.1
19

10 Leak Checking, Vacuuming, and Precharging Refrigerant
Charge 3.5 MPa nitrogen and preserve the system for 24 hours. Provided that 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
10.1
Charging in Refrigerant Oil (Optional) and Vacuuming
10.2
1. Take off 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
10.3
Extra Refrigerant Oil Charge
9.2
The refrigerant oil, Danfoss 160SZ, is recommended.
•If the low-temperature component is not connected, do not add refrigerant oil.
•If the low-temperature component is connected, and L ≤ 10 m, do not add refrigerant oil.
•If the low-temperature component is connected, and L > 10 m, additional refrigerant oil =
additional refrigerant charge x 4%.
If the low-temperature component is connected and L > 10 m, refrigerant oil is required to add.
4. Open pressure gauge valves, and the refrigerant steel vessel valve to charge refrigerant.
5. Charge 10 kg liquid refrigerant (If low-temperature component is configured, charge 15 kg liquid
refrigerant). The rest refrigerant is to be charged during power-on and commissioning.
6. 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.
20