With its sophisticated technology the R410A Super MMS from Toshiba offers superior application flexibility and unrivalled cababilities. Unique from Toshiba every outdoor unit incorporates two new DC twin-rotary compressors and dual-inverter drives. The Inverter control operates with more and smaller steps (increase in control steps) and ensures a more precise and stable temperature desired by the occupant.
A sequence control ensures that operating hours of all compressors are even. This increases reliability, since the starting and operating loads are spread evenly.
CFC-free refrigerant R410A
Two inverter controls in each outdoor unit ensure higher energy efficiency of up to 50%
New DC twin rotary compressors
Superior energy efficiency ratio (EER) of up to 4,1
A new design of the heat exchanger increases energy efficiency
Upgraded fan design for accurate airflow and little vibration
Extended piping capabilities for greater application flexibility (pipe length up to 300 m)
Compact and light design of the outdoor units guarantee easy manoeuvrability on location
Toshiba SMMS key features
The 2-pipe VRF Super Modular Multi System (SMMS)operates with R-410A refrigerant and incorporates the latest inverter technology in all outdoor unit models. In addition, the SMMS incorporates twin-inverter compressors in every outdoor unit.
The capacities range from 14 to 135 kW in cooling mode and 16 to 150 kW in heating mode with the capability to serve up to 48 indoor units. 13 different indoor unit models available in 81 sizes ensure system flexibility.
Unbeatable energy consumption efficiency: average COP of 4.25 (22.4 kW).
Compact flow selector unit: it automatically adjusts the temperature either by unit or by area.
The highest reliability for back up operation thanks to Toshiba dual inverter compressors.
Piping branch flexibility: the three-pipe connection allows installation height variation of 35m (equivalent to a 9-story building).
Active Oil Management system:it increases the operation reliability of all Toshiba VRF systems.
CFC-free high density refrigerant R410A
Individual, central, network control
Toshiba SHRM, 3-pipe VRF system with heat recuperation, were installed on many objects all over the world, for example:
World-known Musei Capitolini, Italy
Shanghai Micro-electronics Office Building, China,141 Super MMS systems, total capacity 4546 HP!
Government House, Azerbaijan
World’s Best Class Energy Savings
COP of 4.25* achieved by Toshiba’s unrivalled Super Modular Multi System technologies and newly developed components:
Part load operation A VRF system can achieve energy efficient operation especially in a separated room layout as shown. Not all of the indoor units operate at the same time so the system is almost always operating with a partial indoor unit load. Toshiba SMMS has a world's highest COP at a part load - up to 5.73
Vector-controlled inverter The inverter boosts efficiency by controlling R410A and a twin-rotary DC compressor. Smooth sine current curve realizes higher efficiency and less noise.
Outdoor heat-transfer Compact heat-transfer tube with intakes on four sides. Tubes with improved heat-transfer coefficient of the inner surface.
Dual DC twin-rotary compressor
Toshiba sets new technological standards, incorporating DC twin rotary compressors in all SMMS outdoor units, compatible with the high density refrigerant R-410A. Thanks to the use of these dual-compressor systems, the system operation load is distributed more evenly, with a special controller regulating the operating sequence of outdoor units and individual compressors. Contact Toshiba Vietnam: +84 4 665 88886 for more support.
This innovative technology also allows optimisation and balancing of the operating time for each component, considerably enhancing the reliability of the complete system. Toshiba control systems select the heat exchanger and compressor to supply the required capacity in the most efficient way. This operating method can reduce the power input by up to 30% compared with a traditional on/off system.
Each SMMS outdoor unit features two inverter-driven twin-rotary compressors. A twin-rotary compressor has two fixed compression chambers. An off -centre roller orbits each chamber to squeeze the refrigerant. The two rollers are both mounted on the same shaft, but are off set to provide counter balance to each other. The contact force required between the roller and chamber wall is lowered. This means that smaller bearings can be used and lubrication demand is reduced, saving weight and making this type of compressor more suited to lowspeed operation.
Toshiba active oil management system
The active oil management systemdeveloped by Toshiba continually monitors the level of oil in all compressors, should an oil shortage be detected in any compressor, oil is automatically transferred from a compressor in another outdoor unit. The two compressors in an individual SMMS outdoor unit are connected by way of an oil balancing pipe to ensure a uniform oil levels within the two compressors.
1) Oil balance control. This control equalizes amount of oil between two compressors.
2) Oil supply control.This control accumulates oil in the oil separator. When oil is insufficient, the system supplies oil to the compressors.
3) Oil supply control between outdoor units. This control supplies oil accumulated in the oil tank of each outdoor unit to the outdoor unit with insufficient oil.
The versatility of the SMMS means that virtually any configuration of the refrigerant Y-type branches and/or header piping can be used in an application to give the shortest, most cost-effective piping installation. The piping can be run in any direction to facilitate refurbishment work.
Line and header branching after header branching are Unique Toshiba's systems!
Extended piping capabilities of Toshiba SMMS system:
Maximum actual length - 150 m
Farthest equivalent length - 175 m
Extension - 300 m
Maximum height difference- 50 m (outdoor unit is higher than indoor unit)
Maximum height difference, outdoor unit is lower than indoor unit - 40 m
Maximum height difference between indoor units - 30 m
Maximum length from first branch - 65 m
Wide variety in SMMS indoor unit line-up
Up to 48 indoor units can be connected to a single Toshiba SMMS system. There are 13 different indoor unit models available in 81 sizes. The large choice of indoor unit models and sizes compatible with the VRF range ensures the ideal solution for any application requirement.
The performances of all units are maximised: low sound levels, optimised air flows and the extremely compact design that reduces installation time and costs. Moreover, the recent additions to the range, the compact high-wall and the slim duct units, reaffirm Toshiba’s commitment to create the perfect climate and well-being for business users. Toshiba provides the ideal climate and comfort levels, ensuring a healthy environment, high technology, maximised efficiency and modern design.
All indoor unit are applicable for all Toshiba VRF systems (SMMS, SHRM and MiNi-SMMS).
Ducted: standard, high static pressure, superslim, 100% fresh air intake
High-wall and compact high-wall
Toshiba SMMS protection devices
Discharge and suction temperature sensors
Internal overload relay
Compressor over-current relay
High pressure switch
Low pressure sensors
High-wall Air Conditioner Selection Program
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Tel: (04) 6675 9999 - Fax: (04) 73 062 062
Hotline: (04) 2207 1111/ 0946 963 048
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