AllState RAC are experts in Commercial grade air conditioning solutions, having completed large-scale projects in a wide range of industries. Our expert team will assess the needs of your business to recommend the best solution.
We can install and maintain the servicing of your commercial air conditioning units to ensure you have optimal performance all year round. Contact our team for a free quote today.
Commercial grade air conditioning solutions for:
Industrial grade air conditioning solutions for:
The two-pipe zoned system designed for heat pump operation.
The world's first* two-pipe system that simultaneously cools and heats.
*As of 1992 (according to Mitsubishi Electric's survey).
All CITY MULTI compressors are of the inverter-driven type, capable of precisely matching almost any building’s cooling and heating needs.
Power modules manufactured by Mitsubishi Electric are installed in the condenser which is the core component, as well as in the inverter circuit board that drives the fan. SiC (silicon carbide) is used in the power module equipped with a voltage-boosting circuit that raises the output voltage of the inverter to expand the operating range. This greatly reduces the power loss of the voltageboosting circuit and helps improve the energy efficiency of the unit (EER improvement).
PWM Control is used to control the number of motor revolutions according to the operational load, and it varies the inverter pulse width (electric signal wave occurring over a short period) to control the output. Control of the electrical current is required for optimal operation.
The heat exchanger is a flat-tube heat exchanger with improved heat-exchanger efficiency. The use of flat tubes increases the number of piping stages while maintaining the same size heat exchanger. The inside of the tube is divided into thin compartments, which increases the area of contact between refrigerant and air, thereby increasing heat-exchange effectiveness and significantly improving energy-saving performance.
The flat-tube heat exchanger improves heat-exchange efficiency by approximately 30% compared to round-tube heat exchangers.
The HIC circuit increases cooling efficiency. This technology raises the degree of sub-cooling, increasing both cooling capacity and cooling efficiency.
The HIC circuit is installed before the point at which the high-pressure liquid refrigerant, which has passed through the heat exchanger of the outdoor unit, flows into the indoor unit. The temperature of the liquid refrigerant, to which heat has been discharged from the outdoor unit’s heat exchanger, is further lowered before the refrigerant enters the expansion valve, allowing the evaporator to absorb a large amount of heat to increase cooling efficiency.
Induction heating (IH) is used to heat the refrigerant. This method differs from the conventional crankcase heater method (in which a belt heater is wrapped around the outside of the compressor) in that heat is not applied from the outside; the refrigerant is heated from the inside, eliminating wasted heat.
The compressor is enclosed in metal plates to reduce noise. On some models, sound absorbing materials are applied to the metal plates to further reduce noise.
The operation pattern under low ambient temperature conditions can be selected and the priority mode setting (“Capacity priority mode” and “COP priority mode”) can be switched with the dip switches. Each mode is activated when the ambient temperature is below the specified temperature. For factory settings, refer to the Data Book.
This mode reduces noise by limiting the compressor frequency and the number of rotations made by the outdoor fan. The user can select their preferred level on installation via dip switch.
Normally, the desired room temperature is set to the same value for cooling and heating. However, the dual set point function makes it possible to set different temperatures for cooling and heating. When operation switches from cooling to heating or vice versa, the preset temperature changes accordingly.
During cooling, the temperature of the refrigerant is controlled according to the air conditioning load. This helps to ensure energy-efficient operation.
With high sensible heat operation mode activated, air conditioners consume less energy, thereby realising cost savings. If locally-procured humidity sensor is installed, the evaporating temperature of the outdoor unit can be controlled optimally as shown below according to the difference between the indoor unit inlet temperature and set temperature. A wide range of temperature settings are available from a low evaporating temperature close to the temperature for normal operation to a high evaporating temperature to realise energy savings.
This function can reduce the capacity of the outdoor unit used by way of the external input to the outdoor unit. The required capacity of the outdoor unit can be reduced in steps, with patterns ranging from 2 to 12 control steps.
Normally, it is necessary to stop the heating operation during defrosting. However, the continuous heating operation method makes it possible to perform defrosting while the heating operation continues. Reduction in the stoppage time of the heating operation reduces drops in room temperature. Use a dip switch on the outdoor unit to switch between the continuous heating operation method and the conventional defrosting method.
We supply, install, service and repair Mitsubishi Electric air conditioners in the Griffith NSW area.Â
We supply, install, service and repair Mitsubishi Electric air conditioners in the Griffith NSW area.Â
With over 34 years of experience, the team at AllState Refrigeration Air Conditioning & Catering Equipment will work with you to provide the quality service and installation you desire.
AllState Refrigeration Air Conditioning Catering Equipment
© Copyright AllState RACCE 2024
Website by Straight Lines Design & Marketing