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If the R410A refrigerant is provided by Huawei, put the refrigerant cylinder upside down when

charging in the refrigerant. If the refrigerant is not provided by Huawei, check with the refrigerant

provider whether the cylinder has a siphon. If the cylinder has a siphon, stand the cylinder when

charging in refrigerant. If the cylinder has no siphon, put the cylinder upside down when charging

in refrigerant. These measures ensure that the refrigerant is charged in the liquid state.

Outdoor Ambient Temperature

Proper Discharge Pressure Range

Below 15

1.5–2.5 MPa

15–35

1.5–3.1 MPa

35–45

2.5–3.8 MPa

Above 45

3.1–4.0 MPa



On the

Diagnostic Mode Parameters

page, set

Comp manual control

to 3000 rpm.



Choose

Running Info

Compressor Information

and view the

Suction pressure

and

Discharge pressure

to determine whether they are within normal ranges. The normal suction

pressure range is 0.7–1.6 MPa, and the ratio (air discharge pressure/air suction pressure) > 1.4.

The normal discharge pressure range is listed in the following table. Check the

EEV suction

overheating degree

(normal range: 4–15

C) on the

Running Info

Electronic Expansion

Valve Information

page.

a. Close the high-pressure valve and low-pressure valve of the pressure gauge.

b. Take off the vacuum pump from the vacuumizing equipment, and replace the vacuum

pump with a refrigerant cylinder.

c. Slightly open the refrigerant cylinder valve and slightly loosen the connection nut on the

leather hose. Tighten the nut when cold air escapes out of the nut.

d. Put the refrigerant cylinder upside down on an electric balance. Set the reading on the

balance to zero.

e. Start the compressor and let it run for 10 minutes.

f. Open the low-pressure valve and refrigerant steel cylinder valve at the joint of the gas

pipe needle valve, and then charge refrigerant at the gas pipe needle valve.

g. Charge liquid refrigerant.

h. After the refrigerant is charged, close all pressure gauge valves and the refrigerant

cylinder valve.

i. Remove the refrigerant charging device and install the bonnet.

Содержание NetCol5000-A011

Страница 1: ...HUAWEI TECHNOLOGIES CO LTD NetCol5000 A011 In row Air Cooled Smart Cooling Product Quick Guide Issue 06 Date 2020 10 23 ...

Страница 2: ... is fully configured For the components electric heater and humidifier not configured skip the corresponding steps 3 Use insulated tools during installation and operation 4 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 ...

Страница 3: ...water inlet pipe optional with humidifier guide rails drainpipe connector OT terminals cord end terminals Engineering Procurement Refrigerant pipe Liquid pipe Copper pipe with an outer diameter of 3 8 inch 9 52 mm pipe wall thickness of 0 75 mm and operating pressure of greater than or equal to 4 5 MPa Gas pipe Copper pipe with an outer diameter of 5 8 inch 15 88 mm pipe wall thickness of 1 0 mm a...

Страница 4: ...nge 4 5 MPa Welding torch and welding rod Silver copper welding rod that contains 5 of silver Nitrogen reducing valve A reducing valve must be installed on the head of the nitrogen cylinder and the reducing valve range 4 0 MPa Dry nitrogen R410A Refrigerant 2 1 Do not use unqualified refrigerant Huawei will not be liable for any equipment damage caused by unqualified refrigerant Refrigerant from n...

Страница 5: ...5 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 Oil Trap 2 2 Unit mm Pipe support Pipe Support 2 3 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 pi...

Страница 6: ...g Bar 3 1 Remove the beams in the IT cabinet and move the entire mounting bar of front door 50 mm towards the exterior Unit mm This section applies to the scenario with three smart cooling products If there are only two smart cooling products skip this section Installing Guide Rails at the Bottom of the IT Cabinet 3 2 ...

Страница 7: ...6 3 2 Floating Nut Installation Positions 3 3 Installing Floating Nuts 3 4 Installing the Guide Rails 3 5 ...

Страница 8: ...n a single row cold aisle install an air director in front of the indoor unit Securing the Control Unit 3 7 Securing the Indoor Unit 3 6 4 Installing an Outdoor Unit Installing the NetCol500 A018 is used as an example in the guide and it is the same as installing the NetCol500 A020 ...

Страница 9: ...equirements for Installing and Maintaining the Outdoor Unit 4 2 To avoid fire disaster install an outdoor unit in a dry and well ventilated place without flammable gas leakage Select a place away from direct sunshine and radiation from other heat sources If the sunshine or heat radiation cannot be avoided cover the outdoor unit Do not install an outdoor unit in a place with much salt or corrosive ...

Страница 10: ...for maintaining the single wall mounted outdoor unit The bearing capacity of the support platform is more than 230 kg Reserve no less than 300 mm from the left or right side of the outdoor unit for maintenance personnel to walk Grid structure is recommended to avoid the air exhaust and intake of the smart cooling product being affected by the guardrail structure The picture is only for reference a...

Страница 11: ...10 Concrete Base Requirements Space Requirements for Multiple Outdoor Units If the air baffle is needed place an air baffle at the air intake side of each outdoor unit ...

Страница 12: ...ipe tilt direction should be consistent with the hypotenuse of the right triangle 3 The refrigerant pipe should be wrapped with thermal insulation foam 4 Keep the pipe dry during welding 5 After the pipe between the indoor and outdoor units are welded blow nitrogen from one end into the pipe to clear foreign matter 6 The welded joints cannot be exposed for a long period of time and must be sealed ...

Страница 13: ...ing welded pipes through holes to prevent air channel leaks and copper pipe damage Otherwise other components may be damaged by foreign matter 4 Avoid elbows and ensure that the connection between the indoor and outdoor units is the shortest Wall Pipe Pipe support Laying Out Pipes Inside the Cabinet 5 2 1 When routing pipes upward inside an IT cabinet remove the cable ring from the pipe side in th...

Страница 14: ...13 Downward pipe routing ...

Страница 15: ...top valve is being tightened 4 Ensure that you tighten the valve to the specified torque The failure torque for the nut of the liquid pipe stop valve is 70 N m and that for the nut of the gas pipe stop valve is 100 N m The torque greater than the failure torque will damage the screw thread Connecting the Indoor Unit 5 3 Connecting the Outdoor Unit 5 4 The outdoor unit has been charged R410A refrig...

Страница 16: ...elivered with the water inlet pipe 2 Rigid pipe conversion adapter G 1 2 inch outer screw thread to rigid pipe connector engineering procurement 3 Rigid pipe made of PP R or other material engineering procurement 4 Pagoda conversion adapter G 1 2 inch outer screw thread to pagoda connector engineering procurement 5 Hose clamp delivered with the water inlet pipe 6 Hose made of EPDM or other materia...

Страница 17: ... pipe connector engineering procurement 3 Rigid pipe made of PP R or other material engineering procurement 4 Pagoda conversion adapter BSPP 1 2 inch inner screw thread to pagoda connector engineering procurement 5 Hose clamp delivered with the smart cooling product 6 Hose made of EPDM or other material engineering procurement In upward pipe routing install the check valve engineering hose and dra...

Страница 18: ...es secure them to the refrigerant pipe using cable ties If the pipes are routed downwards not only secure the pipes but also seal the cable hole using firestop putty IT Cabinet Converged Cabinet IT Cabinet Converged Cabinet 7 Installing Cables M5 3 PCS 2 N m M3 3 PCS 0 6 0 8 N m ...

Страница 19: ...ol unit 7 Control unit output power cable X1 1 X1 2 X1 3 and FU1 FU3 ports on the indoor unit OUT1 port on the control unit 8 J3 cable X101 X102 and X103 ports on the indoor unit J3 port on the control unit 9 J4 cable X101 X102 and X103 ports on the indoor unit J4 port on the control unit 10 Temperature Humidity T H sensor cable RS485 12V port on the control unit T H sensor 11 ECC800 cable FE 2 po...

Страница 20: ...ore removing the rubber hose ensure that there is positive pressure inside the refrigerant pipe of the indoor unit For detailed operations see step 1 4 in section Commissioning Procedure Item Check That Check Result Indoor fan The fan is secured The fan has no foreign matter inside Passed Failed Wet film humidifier optional The water inlet solenoid valve humidifier water pump and wet film are secu...

Страница 21: ...ount is L 30 m x 0 1 kg m for NetCol500 A020 outdoor unit 1 Convert the components that cause partial resistance loss such as elbows into the length equivalent to that of straight pipes and add the equivalent length to the length of the straight pipe between the indoor and outdoor units to obtain the total one way pipe length L L should be less than or equal to 60 meters If L exceeds 60 meters con...

Страница 22: ...irement control Competitive running avoidance The T H control type temp set point humid set point and cold aisle sensor or hot aisle sensor parameters can be modified based on site requirements Other parameters cannot be modified casually and the modification must be authorized by Huawei engineers 0101 in NetCol5000 A0101 is variable and subject to changes with the smart cooling product connection...

Страница 23: ...products will be regarded as standby smart cooling products The parameter can only be set on the master smart cooling product f Forced Rotation Disable or enable the active and standby smart cooling products to work alternately to maximize their service life This function is recommended when the heat load is even The parameter can only be set on the master smart cooling product When Rotation is En...

Страница 24: ...f time the electric heater runs properly In this case choose Elec heater manual control Closed and then click Submit 6 Optional Commission the wet film humidifier On the Diagnostic Mode Parameters page set Inlet solenoid man ctrl to Open and click Submit Check that the water inlet pipe does not leak and the humidifier float works properly Choose Inlet solenoid man ctrl Closed and then click Submit...

Страница 25: ... air discharge pressure air suction pressure 1 4 The normal discharge pressure range is listed in the following table Check the EEV suction overheating degree normal range 4 15 C on the Running Info Electronic Expansion Valve Information page a Close the high pressure valve and low pressure valve of the pressure gauge b Take off the vacuum pump from the vacuumizing equipment and replace the vacuum...

Страница 26: ...he dirt and scale from the condensate pan and liquid level detector Humidifier float Check that the humidifier float has no dirt or scale Clean up the dirt and scale from the humidifier float Return air filter Check that the return air filter is clean and not blocked Clear the air filter Check that the return air filter is not damaged or distorted Replace the filter if it is damaged Evaporator Che...

Страница 27: ... if it is damaged Check that the operating indoor fan generates no abnormal noises Replace the fan component if it is damaged Check that the screws on the indoor fan are not loose or distorted Tighten loose screws Outdoor unit Compressor Check that the compressor is secured Tighten screws if the compressor is not secured Check that the operating compressor generates no abnormal noises Replace the ...

Страница 28: ...Huawei Technologies Co Ltd Huawei Industrial Base Bantian Longgang Shenzhen 518129 People s Republic of China www huawei com ...

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