Mitsubishi Electric SRK100VNPZJX, Technical Manual

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1.11.4 Operation control function by the outdoor controller
(1) Determination of compressor speed (frequency)
Required frequency
(a) Cooling/dehumidifying operation Unit: rps
Model 100 125 140 200 250
Max. required
frequency
Usual operation 90 105 105 100 120
Silent mode, outdoor temperature
≦
15°C 60 80 85 70 80
Min. required frequency 20 20 20 30 30
(b) Heating operation Unit: rps
Model 100 125 140 200 250
Max. required
frequency
Usual operation 90 105 110 100 120
Silent mode 60 80 85 70 80
Min. required frequency 20 20 20 30 30
(c) If the indoor unit fan speed becomes “Me” or “Lo”, Max required frequentcy goes down accordingly depending on indoor
unit model.
(d) Max. required frequency under high outdoor air temperature in cooling mode
Maximum required frequency is selected according to the outdoor air temperature (Tho-A).
Unit: rps
Model 100 125 140 200 250
Max. required
frequency
Outdoor air temperature is
40°C or higher
75 90 96 75 98
Outdoor air temperature is
46°C or higher
75 75 75 66 66
(e) Max. required frequency under outdoor air temperature in heating mode
Maximum required frequency is selected according to the outdoor air temperature (Tho-A).
Unit: rps
Model 100 125 140 200 250
Max. required
frequency
Outdoor air temperature is
18°C or higher
60 80 85 70 80
(f) Selection of max. required frequency by heat exchanger temperature
1) Maximum required frequency is selected according to the outdoor unit heat exchanger temperature (Tho-R) during
cooling/dehumidifying or according to the indoor unit heat exchanger temperature (Th
I
-R) during heating mode.
2) When there are 3 indoor unit heat exchanger temperatures (Th
I
-R), whichever the highest applies,
Unit: rps
Model 100 125 140 200 250
Max. required
frequency
Cooling/
dehumidifying
Outdoor unit heat exchanger
temperature is 56°C or higher
90 100 100 100 120
Heating
Indoor unit heat exchanger
temperature is 56°C or higher
90 100 100 100 120
Note (1) Value in ( ) are for the 3 phase models.
(g) When any of the controls from (a) to (f) above may duplicate, whichever the smallest value among duplicated controls is
taken as the maximum required frequency.
(h) During heating, it is operated with the maximum required frequency until the indoor unit heat exchanger temperature
becomes 40°C or higher.
(2) Compressor start control
(a) Compressor starts upon receipt of the thermostat ON signal from the indoor unit.
(b) However, at initial start after turning the power supply breaker, it may enter the standby state for maximum 30 minutes
(“ PREPARATION” is displayed on the remote controller) in order to prevent the oil loss in the compressor.
If the cooling/dehumidifying/heating operation is selected from the remote controller when the outdoor unit is in the
standby state, “ PREPARATION” is displayed for 3 seconds on the remote controller.