Daikin FXM250LVE [21/56] Explanation of different systems

Daikin FXM250LVE [21/56] Explanation of different systems
• Introduction
5
Systems • Introduction
20
5 Explanation of different Systems
5-3 Inverter heat recovery systems
•LOAD DISTRIBUTION
A totally individual energy saving air conditioning system that uses a highly efficient load heating and cooling free heat recovery method making use of
differences in the load.
A highly energy efficient, wholly modular air conditioning system has been achieved through the use of a heating and cooling free heat recovery method
whereby efficiency is enhanced by selective load distribution.
The use of “R-HIDECS circuit” inverter (*2) control together with independent multi-variable PI control (*1) for the precise monitoring of status and more
effective control of each part of the system, enables the highly particularized use of the system’s capacity to meet the varying air conditioning load
requirements (heating and cooling requirements and load size) of different rooms.
This is nothing less than a completely revolutionary modular air conditioning system which offers the user an entirely free choice of cooling or heating
mode for each and every indoor unit in the system.
NOTES
*1: Proportional integrated control.
*2: Recovery-Hi-Inverter Drive and Electronic Control System.
•EFFECTIVE SIMULTANEOUS COOLING AND HEATING FROM 1 SYSTEM
Effective simultaneous cooling and heating from 1 outdoor unit is achieved by the addition of a gas suction pipe to the existing liquid and gas discharge
piping of the refrigerant system. The availability of both cooling and heating functions is then achieved through the selection of either the gas discharge
or the gas suction pipe in accordance with the ambient temperature and temperature settings.
At this point the “R-HIDECS circuit” is used for capacity control of the indoor unit heat exchanger and the outdoor unit compressor and heat exchanger
in order to achieve perfect performance through the collection and delivery of the precise amount of refrigerant required.
Moreover, perfect control of the thermal balance is achieved by the use of inverter and fan speed adjustment control which in turn permits stable and
efficient control in response to independent selection of cooling or heating mode for each indoor unit.
SYSTEM OUTLINE
ENERGY SAVING SYSTEM USING HEAT RECOVERY
This complete heat recovery system operates by selecting the mode with the smaller load during the course of simultaneous heating and cooling
operations and then using the refrigerant to transmit heat from the mode which is bearing the lower load to the mode which is bearing the higher load.
In this way it is possible in winter, for example, to use the waste heat from the OA room cooling operation to heat the remaining office space … a highly
effective use of energy is thus achieved.
Twin heat exchangers
Twin compressor (inverter + unloader)
Fan
Gas discharge pipe
Gas suction pipe
Liquid pipe
Gas pipe
REFNET joint
Outdoor unit
Indoor unit
BS unit
simultanous operation mode control
(up to a maximum of 12 units)
Year- ro und cooling

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