SYSVRF2 WALL GB Wall-mounted VRF indoor unit INSTALLATION MANUAL
• Make sure the power cord, communication and controller wiring are straight and level when you are working on the connections, and the cover on the electric box is tight. If the electric box is not closed properly, it may lead to electric shock, fire or overheating of electrical components. • If the refrigerant leaks during installation, open the doors and windows immediately to ventilate the area. Refrigerant can produce toxic gases when in contact with fire.
Accessories Verify that the air conditioner includes the following accessories. Please keep the additional accessories properly. Name Appearance Qty Function 1. Screws, ST3.9x25 8 Set installation board 2. Plastic expansion tubes 8 3. Winding belt 1 4. Water discharge pipe 1 5. Wall conduit cover 1 6. Manual 1 7. Brass nuts 1 This manual Pipe connections Accessories to purchase locally Code Name Appearance Dimensions Qty Note To purchase based on actual project requirements.
1. Before Installation 3.1.1 Mounting the rack for the indoor unit Select the installation location, and remove the installation panel from the back of the indoor unit, and place it on the installation position you have selected earlier. At this time, make sure the unit is level, and maintain the dimensions of the bottom, top, left and right sides of the unit. Determine the positions of the wall holes to secure the panel. Make sure you check the packaging during transportation.
4. Refrigerant Piping Installation Outer diameter of connecting piping (mm) 4.1 Length and Level Difference Requirements for the Piping Connections to the Indoor and Outdoor Units The length and level difference requirements for the refrigerant piping are different for different indoor and outdoor units. Refer to the installation manual of the outdoor unit. 4.2 Piping Material and Size 1. Piping material: Copper pipes for air handling. 2.
4.6 Heat Insulation Treatment for Gas-Liquid Piping Connections Use the following operations to join the left connection pipe and the rear connection pipe (left). Bend the connecting pipe, and place it at a maximum of 43 mm from the wall. for the Indoor Unit The heat insulation treatment is carried out on the piping at the gas and liquid sides of the indoor unit respectively. a. The piping on the gas side must use heat insulation material that can withstand temperatures of 120°C and more. b.
Pipe Material Copper Pipe for Air Conditioner Model(kW) ≤4.5 ≥5.6 (Gas side) Φ12.7 Φ15.9 (Liquid side) Φ6.4 Φ9.5 L Warning • • • • • • • BLUE RED (3.6~9.0kW ) Figure 6.2 When connecting to the power supply terminal, use the circular wiring terminal with the insulation casing (see Figure 6.3). Use power cord that conforms to the specifications and connect the power cord firmly. To prevent the cord from being pulled out by external force, make sure it is fixed securely.
6.3.2 Communication wiring between the indoor unit and wired controller Table 6.2 Indoor units electrical characteristics IFM Hz Volts MCA MFA kW FLA 2.2kW 50/60 220-240 0.32 15 0.02 0.25 2.8kW 50/60 220-240 0.32 15 0.02 0.25 3.6kW 50/60 220-240 0.45 15 0.058 0.36 4.5kW 50/60 220-240 0.47 15 0.058 0.37 5.6kW 50/60 220-240 0.58 15 0.058 0.46 7.1kW 50/60 220-240 0.90 15 0.06 0.72 8.0kW 50/60 220-240 0.90 15 0.06 0.72 9.0kW 50/60 220-240 1.1 15 0.
For the specific connection method, refer to the instructions in the corresponding wired controller manual to carry out the wiring and connections. The X1, X2, D1, D2 ports on the sides of the main control board and the unidirectional communication port (display board side) are for different types of wired controllers (see Figure 6.10). Use the connecting wires (accessory 7) to connect the D1, D2 ports. (2.2/2.8kW ) Capacity Code Capacity (hp) 0 2200W(0.8HP) 1 2800W(1.0HP) 2 3600W(1.
SW2 SW2 [0] Caution Factory settings • SW3_1 SW3 [0] SW3 [1] • Reserved All DIP switches (including the capacity DIP switch) have been configured before delivery. Only a professional maintenance personnel should change these settings. Improper DIP switch settings may cause condensation, noise, or unexpected system malfunction. Clear indoor unit address SW3_2 SW3 [0] 7.
Operation manual There are two types of precautions as described below: Warning: Failure to comply may lead to death or serious injury. Caution: Failure to comply may lead to injury or damage of the unit. Depending on the situation, this may also lead to serious injury. Once the installation is completed, please keep the manual properly for future reference. When this air conditioner is handed over to other users, make sure that the manual is included with the handover.
• To avoid damaging the remote controller, exercise caution when using it and replacing its batteries. Do not place objects on top of it. Do not place appliances that have naked flames under or near the unit, as heat from the appliance can damage the unit. Do not place the unit’s remote controller in direct sunlight. Direct sunlight can damage the remote controller’s display. Do not use strong chemical cleaners to clean the unit, as doing so can damage the unit’s display or other surfaces.
Caution • • During heating operation, horizontal airflow will aggravate the uneven distribution of room temperature. The louver direction: horizontal airflow is recommended during cooling operation. Note the downward airflow will cause condensation on the air outlet and louver surface. Adjust the air direction up and down a. Auto-swing: Press SWING for the louver to swing up and down. b. Manual swing: Adjust the louver to improve the cooling or heating effect. c.
Symptom 2: The unit emits white mist Caution • • White mist is generated and emitted when the unit starts to operate in a very humid environment. This phenomenon will stop once the humidity in the room is reduced to normal levels. Do not dry out the air filter under direct sunshine or with fire. The air filter should be installed before the unit body installation. The unit occasionally emits white mist when it runs in heating 4. Re-install the air filter. 5.
14.2 Unit Troubleshooting Symptom Possible causes Troubleshooting steps A power cut has occurred (the power to the premises has been cut-off). Wait for the power to come back on. Power on the unit. This indoor unit forms part of an air conditioning system that has multiple indoor units that The unit does not start are all connected. The indoor units can not be powered The unit is powered off. on individually - they are all connected to one, single power switch.
14.3 Remote Controller Troubleshooting Warning: Certain troubleshooting steps that a professional technician may perform when investigating an error are described in this owner's manual for reference only. Do not attempt to undertake these steps yourself – arrange for a professional technician to investigate the problem. If any of the following errors occur, power the unit off and contact a professional technician immediately.
14.4 Error Codes With the exception of a mode conflict error, contact your supplier or service engineer if any of the error codes listed in the following table are displayed on the unit's display panel. If the mode conflict error is displayed and persists, contact your supplier or service engineer. These errors should only be investigated by a professional technician. The descriptions are provided in this manual for reference only.
MD17I-017BW 16126000002930
