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Si12-308
Main Functions
Function and Control
75
Inverter Features
The inverter provides the following features:
The regulating capacity can be changed according to the changes in the outdoor air
temperature and cooling / heating load.
Quick heating and quick cooling
The compressor rotational speed is increased when starting the heating (or cooling). This
enables a quick set temperature.
Even during extreme cold weather, the high capacity is achieved. It is maintained even when
the outdoor air temperature is 2°C.
Comfortable air conditioning
A detailed adjustment is integrated to ensure a fixed room temperature. It is possible to air
condition with a small room temperature variation.
Energy saving heating and cooling
Once the set temperature is reached, the energy saving operation enables to maintain the
room temperature at low power.
Frequency Limits
The following table shows the functions that define the minimum and maximum frequency:
Forced Cooling /
Heating Operation
For more information, refer to “Forced operation mode” on page 106.
60
120
300
45˚C
Air discharge
temperature
inverter
normal heat pump
Start
seconds
(R1187)
Frequency limits
Limited during the activation of following functions
Low
Four way valve operation compensation. Refer to page 95.
High
Input current control. Refer to page 96.
Compressor protection function. Refer to page 95.
Heating Peak-cut control. Refer to page 97.
Freeze-up protection. Refer to page 97.
Defrost control. Refer to page 99.
Summary of Contents for Super Multi NX B series
Page 7: ...Si12 308 vi Table of Contents ...
Page 29: ...List of Functions Si12 308 18 List of Functions ...
Page 71: ...Specifications Si12 308 60 Specifications ...
Page 175: ...Instruction Si12 308 164 System Configuration ...
Page 227: ...Check Si12 308 216 Service Diagnosis ...
Page 288: ...Si12 308 Wiring Diagrams Appendix 277 FTXD50BVMC FTXD60 71BVMC ...
Page 299: ...Si12 308 iv Index ...