High efficiency heat pump outdoor units VRF MV6i

Unique Innovations

EVI (ENHANCED VAPOR INJECTION) COMPRESSOR

Thanks to the vapor injection DC inverter compressor, the MV6 series can run heating mode stably down to -25°C, furthermore strongly increasing the heating capacity especially at low ambient temperature. Compressor is designed to run at 7% modulation
minimum, highly improving system efficiency at part load operation.

MR. DOCTOR

Force cooling /heating commissioning:
force cooling or force heating operation can check the system comprehensively and quickly.
Self-diagnosys:
all new diagnosis software to monitor all operating parameters and detailed information.

EMS (Energy Management System)

Floating refrigerant temperature for balancing comfort and efficiency
The evaporating temperature (in cooling) and condensing temperature (in heating) are automatically adjusted according to both indoor and outdoor temperature to maximize the comfort and energy efficiency.
Capacity output limitation for shortage of electricity
With the integration of EMS, for projects with limited electricity supply, MV6 can be set to output 40-100% capacity.

High Efficiency

PHE (PLATE HEAT EXCHANGER) SUBCOOLING
Plate Heat Exchanger as a secondary intercooler boosts up refrigerant subcooling and improves 10% energy efficiency.
HIGH SEER AND SCOP VALUES

HIGH EFFICIENCY G-TYPE HEAT EXCHANGER

24-32HP units use high efficiency 3-rows G-type heat exchanger which heat exchange area is 1,5 times than 22HP unit. The 24-32HP units also use super big size fan which diameter is up to 750mm.

Wide Application Range

WIDE CAPACITY RANGE

VRF MV6i series has been designed for single module installation, with a capacity ranging from 8 HP to 32 HP.

ANTI-CORROSION PROTECTION

Outdoor units are given anti-corrosion treatment for non-extreme conditions as standard and can also be customized with heavy anticorrosion treatment on main components for surface protection against corrosive air, acid rain and saline air (for installations in coastal regions) to extend overall useful life. The integrity of the anti-corrosion treatment is ensured by subjecting major components and parts to salt mist testing, moisture and heating testing and light aging testing.

AUTO SNOW-BLOWING FUNCTION

The innovatively designed auto snow-blowing function enables the outdoor unit to prevent the accumulation of snow by itself.

WIDE OPERATION RANGE

VRF MV6i can operate in a wide ambient temperature range.
It can operate stably from -15°C up to 48°C in cooling mode and from -25°C to 24°C in heating mode

LONG PIPING CAPABILITY

High Reliability

PRECISE OIL CONTROL TECHNOLOGY

Four stages of oil control technology ensure all outdoor compressor oil is always kept at a safe level, eliminating any compressor oil shortage problems.

Compressor internal oil separation.
High-efficiency centrifugal oil separator (with separation efficiency of up to 99%) ensures that oil is separated from the discharge gas and returned to the compressors in a timely fashion.
(Oil balance pipes between compressors ensure even oil distribution to keep compressors running normally.
Auto oil return program monitors the running time and system status to ensure reliable oil return.

BACKUP OPERATION

In one unit with two compressors, if one compressor is failed, the other compressor can be backup instead of the failed one to maintain up to 4 days interim capacity, allowing time for maintenance or repair while comfort remains guaranteed.

REFRIGERANT COOLING PCB

The MV6 series uses refrigerant cooling technology to cool the electric control box. It decreases the average temperature of electrical control components by about 8 degrees, guaranteeing the stable and safe running of the control system.

Enhanced Comfort

NIGHT SILENT MODE

The night silent mode feature includes various scheduling options that can be used to reduce noise levels when low noise operation is required: only during night hours or continuously, and with different noise reductions levels limiting only maximum fan speed or compressor speed also.

INTELLIGENT DEFROSTING TECHNOLOGY

The intelligent defrosting program calculates the time required for defrosting according to the actual system status, eliminating heat losses from unnecessary defrosting. A specialized defrosting valve reduces time required for defrosting to as little at four minutes.

MULTIPLE PRIORITY MODE SETTINGS AVAILABLE

Operating mode priority can be set among different modes (automatic, cooling priority, VIP indoor unit, heating only, cooling only) to satisfy every specific user's need. Setting can be performed on outdoor unit directly or by centralized controller.

ENHANCED HEATING CAPACITY

Thanks to the vapour injection DC Inverter compressors, heating capacity can achieve 100% output when the ambient temperature is down to -5°C and 90% output when ambient temperature is down to -15°C.

Easy Installation and Service

AUTO ADDRESSING

Outdoor unit can distribute addresses to indoor units automatically.
Remote and wired controllers can be used to query or modify each indoor unit’s address.

SMART INPUT/OUTPUT CONTACTS

Convenient connectors are available as standard on unit PCB, to realize some convenient operations on field with other building appliances depending on users’ needs. Available contacts are heating/cooling switch as input and alarm as output