Installation Precautions

Transportation

• Choose a road with good conditions or sea for transportation. No excessive tilt or jolt is allowed during transportation.
• Use a pallet truck to move the device with its case down from the truck. The forks must be properly positioned to ensure that the device does not topple.
• Move a cabinet with caution. Any bumping or falling may damage the device.

Storage

If the device will not be used immediately, store it according to the following requirements:

• Do not remove the packing materials, and check the packing materials regularly (recommended: every three months). If the package is damaged, replace it in a timely manner.
• If the device is unpacked but not put into use immediately, put it inside the original package with the desicant bag, and seal it using tape.
• Store the device in a dry, rainproof, fireproof, and anticorrosive environment.
• Ensure that the device is free from dirt, water, and animal intrusion.
• Do not tilt the package or place it upside down.
• Do not stack packing cases.

Installation

• Move the device close to the installation site before unpacking. Unpacking the device with caution to avoid scratching or bumping.
• Avoid damaging cabinet components and cables when moving the indoor unit.
• Do not use the copper pipe or electric control box as a weight-bearing point when moving the outdoor unit, and keep the fins intact.
• Wear protective gloves during installation.
• To ensure the optimal operating condition and longest service life, install the device correctly as required.
• If there are multiple outdoor units onsite, it is recommended that a permanent label be added to each outdoor unit to mark the mapping between the outdoor units and the indoor units. This helps quickly locate and rectify outdoor unit faults. It is recommended that a permanent label be attached or silk-screened at an eye-catching position on the side of the electric control box of the outdoor unit.
• If a concrete base is used, the requirements are as follows:
  • The horizontal gradient of the concrete base cannot exceed 5°.
  • The concrete base drains water smoothly and there is no accumulated water around it.
  • The strength level of the concrete base must be greater than or equal to C20.
• Do not apply any grease to the fan surface.
• When performing operations over the top of the equipment, take measures to protect the equipment against damage. Do not step on it.

Pipe Routing

• Avoid bends and ensure that the connection between indoor and outdoor units is the shortest.
• After determining the optimal pipe connections for the indoor and outdoor units, calculate the number of bends and tees and convert the number into the equivalent length of straight pipes.
• The total length (L) of pipes connecting the indoor unit and outdoor unit equals to the equivalent length of components plus the length of the straight pipes connecting the indoor unit and outdoor unit. The maximum pipe length mentioned in this document is the equivalent length.
• You are advised to select the pipes based on the total length of the pipes connecting the indoor unit and outdoor unit, because different pipe diameters influence the voltage drop and performance of the cooling system.
• Wrap the refrigerant pipes (including hose clamps) with thermal insulation foam.
• Thermal insulation measures should be applied to outdoor water pipes to prevent drainage blockage or insufficient water supply due to freezing.
• When pipes are routed through holes on the unit, seal the holes to prevent air duct leakage and copper pipe damage. Seal the ends of copper pipes to prevent foreign matter from entering refrigerant pipes.
• Pipes cannot be routed from the bottom on a concrete floor.

Pipe Welding

• Before welding, take measures to protect the needle valve (discharge pipe needle valve) within 500 mm from the welding position (by removing the valve plug or wrapping the valve with a piece of wet cloth).
• When connecting the indoor and outdoor units, you are advised to weld pipes to the outdoor unit first. Seal the pipe after the welding break exceeds 15 minutes to prevent dust and water from entering the pipe.
• During the welding, take protective measures, such as spreading a piece of wet cloth, around the welding position, to avoid burning the sheet metal, internal components, needle valves, other pipes, pipe clamps, thermal insulation foam, cables, labels, and tags.
• After welding a long copper pipe or a copper pipe with a bend, clean the pipe with nitrogen to prevent foreign matter from affecting other parts.

Cabling

• Connect cables in accordance with the installation laws and regulations of the country or region where the project is located.
• Obtain the current parameters from the device nameplate.
• Ensure that the voltage and frequency of the power supply meet the requirements of the device.
• Only qualified electrical installation personnel are allowed to connect cables. Before connecting cables, wear insulation and protective equipment, such as protective gloves.
• Before connecting cables, use a multimeter to measure the input voltage and ensure that the power supply is disconnected.
• All units must be securely grounded. The ground resistance must comply with local laws and regulations to prevent poor grounding.
• Power cables and signal cables must be separately routed with a spacing greater than or equal to 30 mm between them, and they must not be routed in the same pipe. Electric and ELV cables must be bound separately.
• Before connecting cables to ports, leave enough slack to reduce the tension on the cables and prevent poor cable connections.
• Cable colors in this document are for reference only.