CARRIER 40VD048H-7S-QEE (01) PDF Document

The main parts of the CARRIER 40VD048H-7S-QEE indoor unit consist of:

• Indoor unit

• Air inlet port

• Air outlet port

• Air duct

• Soft connection

When installing your CARRIER 40VD048H-7S-QEE, please adhere to the following safety warnings:

• Improper installation could result in water leakage, electric shocks, or fire accidents. Please contact a professional installer for installation, repair, and service.

• The installation should be conducted properly according to this manual to prevent water leakage, electric shocks, or fire accidents.

• Install the air conditioner in a place that can bear its weight. Installation on grids like metal burglar-proof nets or in places with insufficient support strength could result in the machine dislodging, leading to physical injuries.

• The installation must be strong enough to withstand typhoons and earthquakes. Nonconformance can lead to accidents.

• Wiring should be selected according to applicable codes and standards. Ensure terminal connections are secure to avoid shock or fire.

• Maintain correct wiring shapes; embossed shapes are not allowed. Wirings should be reliably connected to prevent the cover and plate of the electrical cabinet from clipping the wiring, which could cause heating or fire accidents.

• Do not let air enter the refrigeration cycle system when placing or reinstalling the air conditioner. Air in the system can lead to cracking or physical injuries due to abnormally high pressure.

• Use the accompanying or specific spare parts during installation to avoid water leakage, electric shocks, fire accidents, or refrigerant leakage.

• To prevent harmful gases from entering the room, do not drain water from the drainpipe into a sanitation pipe that could contain harmful gases, such as sulfurated gas.

• Do not install the air conditioner where there is a chance of flammable gas leakage, which could result in fire accidents.

• The drainpipe must be properly mounted and insulated according to the manual to ensure smooth drainage and prevent condensation, which can cause water leakage.

• The refrigerant gas pipe and liquid pipe should be properly insulated to prevent condensation, which can cause water damage from dripping condensed water.

For safe operation of your CARRIER 40VD048H-7S-QEE, please follow these precautions:

• The air conditioner must be effectively grounded. Electric shocks may occur if it’s ungrounded or improperly grounded. The earthing wire must not be connected to a gas pipe, water pipe, lightning rod, or telephone line.

• A breaker for electricity leakage should be mounted to prevent electric shocks.

• The installed air conditioner should be powered on to check for electricity leakage.

• If the drainage hole is blocked or the filter is dirty, it may lead to dripping of condensed water.

• Do not place any heating apparatus under the indoor units, as this might distort them.

• Do not place flammable apparatuses where the air from the air conditioner can come in direct contact.

• Plants and animals should not be placed in the direct path of the wind from the air conditioner, as it could harm them.

• This air conditioner cannot be used for the preservation of food, living creatures, precision instruments, or artworks.

• Use a fuse with the proper capacity.

• To avoid electric shock, do not touch the switch with wet hands.

• Close windows to keep outdoor air from entering. Use curtains or window shutters to avoid sunlight.

• Stop the unit and switch off the manual power when cleaning it.

• During operation, do not switch off the manual power switch; use the controller instead.

• Cleaning the unit with water may cause an electric shock.

• Do not put or direct flammable sprays close to or at the air conditioner, as this may cause a fire.

• This appliance is not intended for use by persons with reduced physical, sensory, or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction by a person responsible for their safety.

To clean the air outlet port and shell, first, ensure the unit is switched off and disconnected from the power supply to prevent electric shock and injury. Follow these guidelines:

• Do not use gasoline, benzene, diluents, polishing powder, or liquid insecticide.

• Do not clean with hot water above 50°C to avoid fading or distortion.

• Wipe them with a soft dry cloth.

• If dust cannot be removed with a dry cloth, water or a neutral dry cleanser is recommended.

To clean the filter of your CARRIER 40VD048H-7S-QEE, make sure the unit is switched off and disconnected from the power supply. Follow these steps:

1. Cleaning: Clean the air cleaner with a vacuum cleaner or water to remove dust.

2. For Heavy Dust: If there is too much dust, use a fan or directly spray a special cookware detergent on the air inlet grid, and then clean it with water after 10 minutes.

(A) Remove dust with a vacuum cleaner.

(B) For excessive dust, use a soft-hair brush and a mild detergent to clean.

(C) Allow the filter to dry fully before reinstalling.

Attention:

• Do not clean with hot water over 50°C to avoid fading or distortion.

• Do not dry the filter on a fire, as this might cause the cleaner to catch fire.

If you are experiencing issues with your CARRIER 40VD048H-7S-QEE, please check the following common symptoms and their potential causes before calling for service.

Under the following circumstances, immediately stop the operation, disconnect the manual supply switch, and contact after-service personnel:

• When buttons are inflexibly actuated;

• When the fuse and the breaker have been burnt;

• When there are foreign objects and water in the refrigerant;

• When other abnormal conditions occur.

The installation site for the CARRIER 40VD048H-7S-QEE should be selected based on the following criteria, approved by the users:

• Ideal air distribution is ensured, with no blockage in the air passage.

• Condensed water can be drained out properly.

• The location can structurally bear the weight of the indoor unit.

• Enough space is ensured for maintenance.

• The lengths of the piping between indoor and outdoor units are within the allowable range.

• A distance of at least 1m is maintained between indoor/outdoor units, mains supply, connecting wires, and television or radio to avoid image disturbance and noises. (Note: Noise might still occur if there is strong electric wave.)

• Equipment, television, or other valuables should not be placed under the unit to avoid damage from condensed water dripping.

• The central position of the air outlet port should be less than 3m high above the ground.

• Hanger bolts should be used during installation. Check if the location can bear the unit’s weight and reinforce it if necessary.

• Ensure it is easy to dismount the electrical control box, fan, motor, and filter for maintenance.

The following table shows the required dimensions for installation and maintenance:

1. Preparation before Installation:

• If necessary, make a hole for installation and access in the ceiling. Refer to the manual diagrams for the size of the inspection hole.

• Before installation, complete all preparations for piping (refrigerant, water, drainage) and wiring so they can be connected right after installation.

• The ceiling around the inspection hole may need reinforcement to maintain evenness and avoid vibration. Consult a construction contractor for details.

2. Install the hanger bolts (M10 bolts):

• To support the unit’s weight, use barb bolts for ceiling installation. For new ceilings, use inlaid bolts, embedded bolts, or other provided parts.

• Adjust the gap between the bolt and the ceiling before proceeding.

3. Installation of Indoor Unit:

• Fix the indoor unit with the hanger bolt. The machine can be hung on a beam if necessary.

4. Adjusting the level:

• Adjust the level of the unit using a level meter or as shown in the manual’s diagrams to ensure it is perfectly level.

For proper drainpipe installation on your CARRIER 40VD048H-7S-QEE, follow these guidelines:

Proper Piping:

• Keep a downward gradient (slope) of 1/50 to 1/100 for the drain pipes.

• Avoid lobing (dips) or upward curving in the pipe run.

• When connecting the drainpipe, don’t apply too much force to the equipment. Position the piping as close as possible to the unit.

• Use a general-purpose hard PVC tube. Insert the end of the PVC tube into the wash port and fasten it with a drainage hose and thread clip. Do not use binding agents or glues.

• If multiple units use a common drain pipe, the public piping should be about 100mm lower than the wash ports of the equipment. Use thicker pipes for this application.

• The hard PVC tube in the room must be provided with a heat-insulating layer.

• Do not place drainpipes in an area with irritant gases or directly into a sewer where there might be gases with sulfur.

Backwater Bend:

• To avoid water leakage due to sub-atmospheric pressure in the drain pan, a backwater bend must be designed into the drainpipe. A ‘T’ joint can be used for easy cleaning. The backwater bend should be located near the air conditioning unit or in the middle of the drain pipe.

Pump Lift:

• The pump’s maximum lift reaches 600mm. Follow the recommended installation dimensions shown in the manual’s drawings.

To test the drainage system of your CARRIER 40VD048H-7S-QEE, follow these steps:

1. After testing the electrical system, test the drainage system.

2. Provide about 1000cc of water to the equipment via the air outlet port with the feed pump.

3. During refrigerating operation, check that water flows through the piping correctly without any leakage at the connections.

4. For a new house, test the drainage system before fitting the ceiling.

5. The drainage test should be performed even if the unit is installed in a season when heating is needed.

6. A gibbose connector should be installed on the drainpipe to provide a water inlet port. This helps inspect for leakages and ensure the water flow is smooth.

Please refer to the attached manual for outdoor units for full details. Here are the specifications and procedures for the indoor unit tubing.

Tubing Materials & Specifications:

Connecting Procedures of Refrigerant Tubing:

Proceed with the flare tube connecting operation. Dual wrenches must be used for connecting the indoor unit tubing. Refer to the table below for mounting torque.

The sound pressure levels and weights for the CARRIER 40VD007~054H-7S-QEE series are listed below. The noise level of the machine is below 70 dB.

Warning:

• Electrical connections should be made with specific main circuits by qualified personnel. Insufficient power supply capacity can cause electric shock and fire.

• Use specified cables for the main line, conforming to local wiring regulations. Connections must be reliable to avoid external force transmission to the terminals, which can lead to burning or fire.

• Ground connection must match specifications. Unreliable grounding can cause electrical shocks. Do not connect the grounding line to a gas pipe, water pipe, lightning rod, or telephone line.

Attention:

• Only copper wires can be used. A breaker for electric leakage must be provided to prevent electric shock.

• The main line wiring is of Y type. The L terminal connects to the live wire, N to the null wire, and the ground terminal to the ground wire. For models with auxiliary heating, do not misconnect the live and null wires.

• If the power line is damaged, it must be replaced by a professional from the manufacturer or service center.

• Arrange the power line of indoor units according to the installation instructions.

• Keep electrical wiring away from high-temperature sections of tubing to prevent melting of the insulating layer.

• After connecting to the terminal tier, the tubing should be curved into a U-type elbow and fastened with the pressing clip.

• Controller wiring and refrigerant tubing can be arranged and fixed together.

• Maintenance should be done while the power is shut down.

• Seal the thread hole with heat-insulating materials to avoid condensation.

• The signal and power lines are independent and cannot share one line. Power line parameters: 3×(1.0-1.5)mm²; Signal line parameters: 2×(0.75-1.25)mm² (shielded line).

• The machine must be connected to the ground according to EN 60364. Periodically check and ensure to tighten the pressure lugs.

• Indoor and outdoor units should be connected to the power source separately. Indoor units can share a single electrical source, but capacity and specifications must be calculated. Both indoor and outdoor units should be equipped with power leakage and overflow breakers.

The wiring specifications for the power line, wiring between indoor/outdoor units, and wiring between indoor units are as follows:

Signal Wiring of Wired controller:

Additional Notes:

• The electrical power line and signal lines must be fastened tightly.

• Every indoor unit must have a ground connection.

• The power line should be enlarged if it exceeds the permissible length.

• Shielded lays of all indoor and outdoor units should be connected together, with the shielded lay at the side of the signal lines of the outdoor units grounded at one point.

• The whole length of the signal line should not exceed 1000m.

• The shielding lay of the signal line must be grounded at one end.

• The total length of the signal line should not be more than 250m.

The SW01 dipswitch on the indoor unit PCB is used to set the capabilities of master and slave units. In the table, 1 represents ON and 0 represents OFF.

Operation Mode Setting (SW01_1):

Address of Wire Controlled Indoor Unit (SW01_2, SW01_3, SW01_4): A wired controller can be connected to at most 16 ultra-thin air-duct indoor units.

Capability of Indoor Unit (SW01_5, SW01_6, SW01_7, SW01_8):

Before performing a test run, follow these steps:

• Before switching on, test the supply terminal tier (L, N terminals) and grounding points with a 500V mega-ohm meter. The resistance must be above 1MΩ. Do not operate if it is below 1MΩ.

• Connect the unit to the power supply of the outdoor units to energize the compressor’s heating belt. To protect the compressor on startup, power it on for 12 hours prior to operation.

• Check that the installations of the drainpipe and connection line are correct. The drainpipe should be placed lower, and heat preservation measures (like wrapping with insulating materials) should be taken, especially for indoor units.

• The drain pipe should be fixed in a slope to avoid protrusions at the upper end and concaving at the lower end.

Checkup of Installation:

• check if the mains voltage is correct

• check for leakage at the piping joints

• check if the connections of mains power and indoor & outdoor units are correct

• check if the serial numbers of the terminals matching

• check if the installation place meets the specifications

• check if there is too much noise

• check if the connecting line is fastened

• check if the connectors for tubing are heat insulated

• check if the water is draining outside properly

• check if the indoor units are positioned correctly

Ask the installation personnel to make a test run. If the machine fails to start due to room temperature, you can initiate a forced run. This function is not available with the remote control.

• Set the wired controller to refrigerating/heating mode, then press the “ON/OFF” button for 5 seconds to enter the compulsive refrigerating/heating mode.

• To quit the compulsive running, press the “ON/OFF” button again to stop the operation of the air conditioner.

If a fault occurs, you can identify it by the fault code on the wired controller or the flashing of the PCB LED5. The codes are as follows: