Installation of outdoor air conditioning units VRV, VRF is one of the types of air conditioning systems for high-rise buildings or works with large use areas. the construction and installation of outdoor units for VRV,VRF air conditioners quickly and cheaply are chosen by many contractors for their projects. Please follow the article of P69 – M&E Contractors to better understand!

What is VRV, VRF air conditioning system?

VRV stands for the word “Variable Refrigerant Volume”. VRV central air conditioning system is a type of conditioning system for high-rise buildings, large-area works and with limited placement of separate cooling outdoor units.

VRF stands for the word “Variable Refrigerant Flow”. This is the same type of air conditioner as VRV, but it uses the VRF symbol to distinguish it form Daikin’s VRV central air conditioning system.

The advantages of central air conditioners VRV, VRF

If you are confused about choosing one of the two products, the following advantages will help you make a decision

1. Advantages of VRV central air conditioner

VRV central air conditioner can be said to be one of the pinnacle of air conditioning production technology. Here are the advantages that VRV brings:

– Assembly details are reliable, long life.

– VRV air conditioning system has the ability to limit noise and prevent dust very well. Should be applied quite widely, including areas requiring low noise

– The installation process is quite simple and quick, doesn’t take to much time.

– Smooth operation. Can be self-operated every year without operator. In addition, it can also be connected to the control center of the building making it easy for repair and maintenance.

– The price is at the right level.

2. Advantage of VRF air conditioning system

VRF air conditioners are favored by consumers thanks to the following advantages

–  Save installation space, bring high aesthetics

– Easy installation and construction

– Very good noise cancellation and dust removal ability

– Efficient energy saving

What is the difference between VRV and VRF central air conditioners ?

Many people of ten confuse the two terms VRV and VRF. In essence, RVR and VRF are two different terms for the same type of HVAC technology that uses inverter control. Simply put, both terms refer to technology that allows a compressor to vary its output

But because Daikin is the one that invented the first VRV central air conditioning system, they have registered the term VRV (abbreviation of Variable Refrigerant Volume) as an official and exclusive trademark. All other brands Mitsu, Toshiba, LG, etc use the name VRF (Variable Refrigerant Flow) for their central VRF (Variable Refrigerant Flow) for their central air conditioning system

Requirements when installing VRV, VRF air conditioners

• Ask a qualified dealer or employee to do the installation work. Do not try to install the machine alone.
• Do the installation work according to the instructions. Improper installation may result in water leakage, electric shock or fire.
• Be sure to use only specified accessories and parts for installation work.
  Install the air conditioner on a platform strong enough to support the weight of the unit.
• Carry out the specified installation work after taking into account strong winds, storms or earthquakes.
• Make sure that a separate power supply circuit is provided for this equipment and that all electrical work is performed by qualified personnel in accordance with local laws and these regulations and installation instructions.
• Ensure that all wiring is secured. The specified wires are used and no external force is exerted on the terminal or wire connection.
• When the power cord and remote control wiring and transmission are wired, position the conductors so that the electrical parts box covers can be securely fastened. Improper positioning of the electrical components box cover may result in electric shock, fire or overheating of the terminals.
• Before the electrical parts are touched, turn off the machine.
• High currents from lightning or other sources can cause damage to the air conditioner.
• Do not touch the switch with wet fingers.

Places where air conditioners should not be installed

• In which a mineral oil mist or spray of oil or vapor is produced. For example in the kitchen. Plastic parts may deteriorate and fall off or lead to water leakage.
• Where corrosive gases, such as sulfuric acid gas, are produced. Corrosion of copper pipes or welded parts can lead to refrigerant leaks.
• Near machines and equipment that emit electromagnetic waves. Electromagnetic waves can interfere with the operation of the control system and as a result may cause equipment failure.

The construction and installation process of VRV, VRF air conditioner outdoor unit quick and cheap

After preparing the installation drawing, it is necessary to carry out the installation according to the following 12 processes:

– Step 1: Install the waiting pipe through the wall

– Step 2: Install the indoor

– Step 3: Install the hanger

– Step 4: Install the gas pipe

– Step 5: Install the condensate pipe

– Step 6: Install the air duct

– Step 7: Wrap insulation

– Step 8: Install control wiring

– Step 9: Install outdoor unit

– Step 10: Test pressure

– Step 11: Vacuum

– Step 12: Recharge additional gas

The above 12 steps are the average installation process for 2 lines of Daikin VRV III and IV central air conditioners. These procedures may vary depending on site conditions and actual site circumstances

Maintenance of outdoor units VRV, VRF

• Check the working condition of the temperature sensors and pressure sensors.
• Check the suction pressure and discharge pressure, analyze these parameters.
• Check and refill the system with additional gas.
• Check and adjust if the pipe joints, insulation tape, tighten bolts at the joints.
• Check connection, control signal transmission between outdoor and outdoor, outdoor with indoor and indoor with indoor. Check the outdoor-outdoor control operating modes
• Measure the motor amperage and compare with the standard, measure the insulation of the between indoor-outdoor and safe connection for the system.
• Check the control operation modes between indoor-outdoor and safe connection for the system.
• Check and handle vibration during operation, problems with gas system pressure, temperature.
• Clean the condenser with specialized equipment.

Are you looking for a quick and cheap construction and installation unit for VRV and VRF air conditioners?

P69 – M&E Contractor is one of the units that provides the service of installing VRV and VRF air conditioner outdoor units at good prices. With man years of experience in this field, we are committed to bringing the highest satisfaction to our customers. We consult and design VRV and VRF central air conditioning systems to meet the needs of customers

Ensure ISO 9001:2015 management process. Professional consulting staff – working based on the principle of “MIND – TRI – SPEED”.

With strict criteria: Dedicated advice – Deserving products – Fast progress – Reasonable prices

We P69 JSC provide and install the following services:

– SUPPLY & INSTALL VACUUM SYSTEM (HVAC)

– SUPPLY & INSTALL ELECTRICAL SYSTEM, SMALL ELECTRICITY

– SUPPLY & INSTALL WATER SUPPLY AND DRAINAGE SYSTEM

– SUPPLY & INSTALL FIRE FIGHTING SYSTEM (Firefighting)

P69 JSC has become one of the largest suppliers for typical projects such as: Vinhomes Grand Park; Vinhomes Smart City; Hanoi F1 race track; Vinhomes Central Park; Vinhomes Golden River; Vinhomes Times City; Vinhomes Royal City; Building of the Ministry of Public Security – Pham Van Dong; Building of EVN – Vietnam Electricity Corporation – 11 Cua Bac; Factory Samsung Electronic Vietnam; Hyundai Thanh Cong 2 Automobile Factory;… And many other big projects

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