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1. OUTLINE
“Super Heat Recovery Multi System” is a multi air conditioning system which enables each
indoor unit in a refrigerant line to independently select cooling or heating operation.
As it is able to operate simultaneously in cooling and heating modes, further heat recovery
becomes possible. This system is most suitable for a building etc. where cool and hot air are
mixed, such as a building where there are large temperature differences between rooms,
caused by the influence of daylight or where used in a server room and permanent cooling is
required.
Heating and cooling operation are automatically selected in individual unit;
You can save time for operation.
For example, when heating is required for early morning and cooling for daytime, a Flow Selector Unit provides
automatically a smooth selection of heating or cooling operation.
Therefore you can obtain a comfortable room environment without feeling somewhat out of place and moreover
you can save time to select heat/cool operation.
INFORMATION
The Super Heat Recovery Multi system is different from that of the conventional Multi air conditioner in several
ways such as the heating and cooling operations are mixed and only a part of the air conditioning system
operates in cooling function.
For this reason, the following table explains the operation modes of this air conditioner.
The following table explains the representation of the operation modes within this Manual.
Operation mode
Operation mode Outline
1. All Cooling All indoor units are under cooling operation only.
Outdoor heat exchanger (Main heat exchanger) is used as condenser.
2. All Heating All indoor units are under heating operation only.
Outdoor heat exchanger (Main heat exchanger) is used as evaporator.
3. Simultaneous operation MIU for simultaneous operation
3-1. Mainly cooling, partly
heating operation
Indoor units are under heating/cooling simultaneous operation with subjective cooling operation
Outdoor heat exchanger (Sub heat exchanger) is used as condenser.
3-2. Mainly heating, partly
cooling operation
Indoor units are under heating/cooling simultaneous operation with subjective heating operation
Outdoor heat exchanger (Main heat exchanger) is used as evaporator.
4. Defrost Using the reversing operation of the 4-way valve, ice on the outdoor heat exchanger is dissolved
within single cooling cycle.