VRF/VRV

Description:
The VRF/VRV (Variable Refrigerant Flow/Volume) air conditioning system is a one-to-many type central air conditioning system. This system is consists of 1 outdoor unit and 2 or more indoor units. The outdoor unit is for air-cooled heat exchange, and the indoor units adopt the direct evaporative heat exchange.

The VRF air conditioning system uses refrigerant as the conveying medium. The outdoor unit is composed of a heat exchanger, a compressor and other refrigeration accessories. The indoor unit is composed of a direct evaporative heat exchanger and a fan. One outdoor unit can deliver refrigerant liquid to several indoor units through pipes. By controlling the refrigerant circulation volume of the compressor and the refrigerant flow rate entering the indoor heat exchangers, the indoor cooling and heating load requirements can be timely met.

Advantage:

The VRV central air conditioner has a warm and comfortable air output, and the cooling (heat) is fast and strong;
The indoor unit is centrally managed, and one indoor unit can be started to run alone, or multiple indoor units can be started at the same time. It is more energy-saving.
VRF air conditioning system has a long service life and a very low unit failure rate. It is basically self-adjustment and diagnosis, no special maintenance is required, and the outdoor unit service life is as long as 30 years, which greatly saves maintenance costs.

System Type:

Variable Refrigerant Flow (VRF) air-conditioning system
Heat Pump type or Heat Recovery type (simultaneous cooling & heating)
Modular outdoor units with inverter-driven compressors

Outdoor Units Specifications:

Capacity range: 8 HP – 72 HP (modular combination)
Power supply: 380–415V / 3Ph / 50Hz (or 208–230V / 3Ph / 60Hz)
Compressor: DC inverter scroll (full DC technology)
Refrigerant: R410A (or R32 if required)
Operating range:
- Cooling: –5°C to 52°C
- Heating: –25°C to 24°C
Sound pressure level: ≤ 60 dB(A) (depending on model)
Heat exchanger: High-efficiency copper tube / aluminum fin
Protection: High/low pressure, overload, phase protection, anti-freeze

vrf-system-with-fan-coil-unit-thermostat

Indoor Units Specifications:

Types available:
- 4-way cassette
- Ducted (low / medium / high static pressure)
- Wall-mounted
- Floor-standing
- Horizontal FCU
- Vertical FCU
Capacity range: 1.5 kW – 56 kW
Fan motor: DC inverter motor
Noise level: 22–45 dB(A)
Air filter: Washable long-life filter
Optional: Fresh air intake, UV sterilization, HEPA filtration

Refrigerant Pipping:

Pipe material: Deoxidized copper (ASTM B280 / EN12735)
Maximum piping length:
- Total length: up to 1,000 m
- Equivalent length (ODU–IDU): up to 165 m
Max height difference:
- ODU above IDU: 110 m
- IDU above ODU: 50 m
Branch selector box (for heat recovery systems)

Control System:

Individual room controllers (wired / wireless)
Central controller with scheduling & fault monitoring
BMS integration: BACnet / Modbus / LonWorks
Functions:
- Temperature & mode control
- Energy monitoring
- Group control & time scheduling
- Error diagnosis & alarms

What Brans We Provide:

GREE
MIDEA
GCHV
TCL
HAIER
AUX
OEM

Not Only ACs, But Also Full Range Services:

Site Visit
Design
Product Selection
Shipping
Installation & Commissioning
Training
Spare Parts
After Sales

vrf-for-commercial-building-in-bangladesh

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