The new multi functions units SCAEY FOUR (4 pipe system) have been designed to achieve and deliver the following advantages:
The ACM Kälte Klima SCAEY FOUR UNITS are designed to maximize the heating and cooling performances at the same time, which means they offer high energy efficiency with top energy savings. The SCAEY-FOUR units are the heat pump chiller air - water with axial fans, equipped with two independed hydraulic circuits, to supply simultaneously or separately hot water and chilled water. They are particularly suitable for use in four-pipe systems.
For a more environment friendly product, ACM Kälte Klima have opted to run their units on green refrigerant R-410A.
This refrigerant does not contain chlorine atoms, so it is not dangerous to the ozone layer if released. Its hight thermodynamic efficiency also makes for considerable energy savings and means more compact units with higher performances.
Electronic expansion valve managed by software, can allow the refrigerant circuit to work very efficiently reducing the power consumption. When the heating load changes suddenly, a traditional expansion valve experiences a 2-3 minute hunting period before achieving a state of equilibrium.
On the contrary we have an immediate action of an electronic expansion valve.
When a compressor starts or stops:
• The electronic driver pre-positions the valve at a point that is very close to the final equilibrium point
• The state of equilibrium is quickly achieved with minor adjustments.
• The expansion valve becomes an active part within the system instead of just a passive part.
• Hunting lasts hardly any time at all
The option of producing different cooling circuit configurations on the same size unit (in terms of capacity) means we can customize efficiency levels at full or partial load.
The multi-compressor models favour high efficiency values at full load (EER and COP).
Having a number of compressors allows the unit to deliver its output based on a number of capacity reduction steps, thus adjusting capacity to suit the system’s actual heating load perfectly and reducing inrush currents.
An advanced microprocessor enable:
• LAN network
• The WEB kit to read and set data via a remote PC by accessing the IP address of the unit or unit network.
The units SCAEY-FOUR are chillers / heat pumps equipped with three heat exchangers: an evaporator for the production of chilled water, a condenser for the production of hot water, a finned coil which acts, depending on the requests, from condenser or as an evaporator to dispose of, or withdraw, the difference from the outside of the heat is not required by the plant.
A dedicated microprocessor, with temperature sensors on the two hydraulic circuits, responsible for the management of the units. The circulation of water to the two heat exchangers must always be guaranteed, even if the users do not require.
Request chilled water only
The four-way valve directs the refrigerant toward the finned coil which acts as a condenser by disposing outside all the heat. The unit acts accordingly as a traditional air cooled water chiller.
Request only hot water
The 4-way valve directs the refrigerant to the condenser by heating the hot water circuit of the plant. The unit operates like a traditional air-water heat pump, in heating cycle.When it is required defrosting the four-way valve is switched so that the hot gas enters battery and provides to defrost the same. Once executed defrosting restores the heating cycle previously described.
Request simultaneously of hot and cold water
The four-way valve directs the refrigerant to the condenser by heating the hot water circuit of the plant. The condensed refrigerant flows through the solenoid valve, electronic thermostatic and enters the evaporator where it evaporates it cools the cold water circuit system. The unit operates accordingly as a traditional water chiller water cooled.
Each unit consists of two independent refrigerant circuits, each of them can work in cooling mode only, heating only or heating cooling simultaneously so you can satisfied both application of cold to hot regardless of their relationship: for example, you can have a circuit that works in cooling mode only and the other switches work only with that warm the coldest cold.