Carrier VRF
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Variable Refrigerant Flow Two-Pipe Heat Recovery and Heat Pump Systems

Index What Is Carrier® VRF? Carrier VRF Advantages Revolutionary Design High Performance Advanced Technology Installation Made Simple Heat Recovery Benefits Heat Pump Benefits VRF Outdoor Unit Overview VRF Indoor Unit Overview Heat Recovery (Three-phase) Multi-port Distribution Controller (MDC) Heat Pump (Single-phase) Heat Pump (Three-phase) 4-Way Cassette Compact 4-Way Cassette High Wall Underceiling/Floor Console (Exposed) Floor Console (Recessed) Low Static Duct (Slim Profile) Medium Static Duct High Static Duct Vertical Air Handling Unit Outside Air Unit Individual Zone Control Central...

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Carrier® VRF Advantages Suitable to precisely match the building’s cooling and heating demands, Carrier® VRF systems utilize a 2-pipe system for both heat recovery and heat pump. A single outdoor VRF condenser can power up to 64 independent indoor units, depending on the system. This provides superior zoning because the refrigerant flow can vary from location to location, delivering only the necessary capacity to each zone. The system adjusts the flow of refrigerant to each indoor unit based on its operating conditions. It computes the amount of refrigerant required by each indoor unit and...

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Revolutionary Design Smaller Footprint VRF systems provide several installation advantages by eliminating the need to install large distribution fans, water pumps and large pipes. VRF systems do not require dedicated maintenance rooms or service shafts, freeing up valuable real estate space in the buildings where they’re installed. The Carrier® VRF heat recovery 20-ton system is 40 percent smaller compared to other VRF outdoor units in the marketplace. High Efficiency Carrier VRF achieves high efficiency in cooling and heating by utilizing all DC Inverter compressors, all DC fan motors and...

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High Performance anced Comfort High Heating Performance Operation Mode The Carrier® VRF system provides heating down to -13° F with up to 70% of the rated heating capacity. This is just one more way we deliver comfort solutions for any indoor space, anytime of the year. e feature which is easily set on the PCB board allows the unit to be set to various time options during Performance Ratio at 5° F k operation time minimizing the units noise output. 100 90 80 70 60 50 40 30 20 10 0 sting program will judge the according to the system real duce heating loss caused by sting and create more...

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Advanced Technology Compressor Occupants enjoy balanced, consistent comfort because the operating sequence of the outdoor units and the individual compressors are rotated to spread operating hours evenly. Because the compressors are all Inverter-driven, inrush currents are eliminated. There is no on/off power surge as the system adjusts to the demands of the occupant or system. And, the use of Inverter compressors reduces the risk of compressor failure, more common in standard non-Inverter systems. The outdoor unit provides greater backup capability in case of a compressor failure. If that...

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High Performance Heat Exchanger The advanced heat exchanger design enlarges the heat-exchange area, decreasing the air resistance while the hydrophilic fins and inner-threaded copper pipes optimize heat-exchange efficiency. Advanced Silent Technology with Fan Blade Design The outlet grille and shape of the fan blade decrease the running noise and lower down airflow resistance and vibration. Paired with the DC Inverter compressor, the condenser is extremely quiet with operation as low as 58.4 dB(A). Hinged Electrical and Control Design The electric control box can be rotated by a maximum of...

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Installation Made Simple Reduce Piping Connections Two-pipe heat recovery system with innovative MDC provides simultaneous cooling and heating while reducing refrigerant pipe connections by reducing the number of joints between the outdoor unit and MDC. The centrally located MDC allows for the use of soft copper line sets, making installation simpler and faster. Single-Chassis Design (Heat Recovery Only) The single-chassis design not only reduces the footprint of the outdoor unit, but also reduces electrical connections by proving a single-point power connection. Because of the non-modular...

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Controls Quick Connects All indoor units and MDCs are provided with a quick-connect controls system. This allows for the use of accessory wire with preinstalled connectors or the use of field-provided wiring with the included terminal accessory. This makes the wiring of controls faster and helps to reduce miswiring during installation. Controls Wiring Method/Design The control wiring method was designed to more closely follow the piping arrangement. Heat pump systems use a daisy chain control wire configuration, while heat recovery systems use a hub and spoke design wiring from the outdoor...

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Heat Recovery Benefits Heat Recovery and Simultaneous Heating & Cooling Carrier ® VRF heat recovery utilizes a 2-pipe system that allows for simultaneous heating and cooling. Heat recovery and flexible refrigerant flow make it possible to heat and cool different zones on a single refrigerant piping system at any given time. The system can increase efficiency by recovering energy that might otherwise be wasted from one zone, like a sunlit lobby, and reusing it in another cooler part of the building. The Carrier VRF heat recovery outdoor unit lineup is a single module up to 28 tons, which...

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Operating Ranges The operating ranges for Carrier® VRF heat recovery systems provide heating down to -13 degrees with cooling up to 125 degrees Fahrenheit. Heating Mode Cooling Mode Piping Length and Height Difference The Carrier VRF heat recovery system includes the multi-port distribution Cooling Mode 125 5 controller that can be used as main or sub for greater piping flexibility. The main multi-port distribution controller can connect up to two sub multi-port distribution controllers to provide longer piping runs. A smaller Heating Mode 64 -5 equipment footprint matched with longer...

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