Máy lạnh Daikin VRV-WIII giải nhiệt nước

 

Máy lạnh trung tam giải nhiệt nước

• * Prior consultation is necessary about the heat source equipment. Contact your Daikin dealer for details.

 

Within the refrigerant piping system, a maximum of 120 m of actual piping length and 50 m^* of level difference between the VRV-WIII and indoor units are possible. Water piping does not enter occupied spaces, so there is little chance of water leaking.

    

Compact and lightweight

Adoption of a water heat exchanger and optimisation of the refrigerant control circuit has resulted compact and lightweight equipment. A weight of 149 kg and height of 1,000 mm make installation possible in buildings with limited space, or where no space is available for outdoor units. This makes the system ideal for places that have no area outside-such as underground malls. Stacked configuration is also possible, further contributing to space savings.

• * Unit is designed for indoor installation only.

Energy saving heat recovery operation

Daikin now offers 2-stage heat recovery operation.
The first stage of heat recovery operation is within the refrigerant system. By controlling the BS unit that switches cooling and heating, simultaneous cooling and heating operation is made possible, with heat recovery performed between indoor units.
The second stage of heat recovery operation is within the water loop, where heat recovery is performed between the VRV-WIII systems.
This 2-stage heat recovery operation substantially improves energy efficiency and makes the system the ideal solution to the requirements of modern office buildings, where some areas may require cooling even in winter, depending on the amount of sunshine received and the number of people in the room.

Stage 1

Simultaneous heating and cooling operation within the refrigerant system.

In mainly cooling, partly heating mode, the system recycles heat exhausted from the cooling operation to use for heating. In mainly heating, partly cooling mode, the system uses cooled post-heating operation refrigerant for cooling. Efficiency improves the more simultaneous operation is performed.

Stage 2

Heat recovery operation between the VRV-WIII systems.

Heat recovery operation is also available between systems connected to the same water loop, with systems exchanging heat via water. This increases energy efficiency.

A variety of functions that realise easy installation and improve reliability

• Features a pump interlock function that controls the pump of the heat source simultaneously with the starting of the VRV-WIII unit. This significantly simplifies operation and management.
• Employs DIII-NET to enable the shared use of the wiring between the indoor units, the VRV-WIII unit and the central control wiring.
• Provides an auto address setting function and check function that detects connection errors in wiring and piping for easier installation.
• Water piping goes only to the VRV-WIII unit, with refrigerant piping run in occupied spaces, so there is little chance of water leakage or corrosion.

Easily responds to simultaneous heating and cooling needs.

By adding suction gas piping and a BS unit (sold separately), simultaneous heating and cooling operation can be provided by a single system.

 

Centralised interlocking function

Centralised interlocking input is possible using an external control adaptor (DTA104A62).

New BS unit for improved comfortability

New BS unit for heat recovery can improve comfortability by switching between cooling and heating operation independently.

Originally, switching was performed by indoor units, which lowers the operation capacities of other indoor units. Now the switching can be conducted on this new BS unit, successfully reducing the effects to other indoor units when compared to the conventional VRV-WII system.

Equalising the pressure of only the BSVQ can switch over the operation mode.