Outline Of Operation Control By Microcomputer; Remote Control (Option Parts); Operation Control Function By The Wired Remote Control; Operation Control Function By The Indoor Control - Mitsubishi Heavy Industries V Multi FDC71VNX Technical Manual

2.10 OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER

2.10.1 Remote control (Option parts) .......................................... See page 93.

2.10.2 Operation control function by the wired remote control

2.10.3 Operation control function by the indoor control

2.10.4 Operation control function by the outdoor control

( I ) Models FDC100-140VNA, 100-140VSA
(1) Determination of compressor speed (Frequency)
Required frequency
(a) Cooling/dehumidifying operation
Max. required
frequency
Min. required frequency
(b) Heating operation
Max. required
frequency
Min. required frequency
(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).
Max. required
frequency
(e) Max. required frequency under outdoor air temperature in heating mode
Maximum required frequency is selected according to the outdoor air temperature (Tho-A).
Max. required
frequency
(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 (Thi-R) during heating
mode.
2) When there are 3 indoor unit heat exchanger temperatures (Thi-R), whichever the highest applies.
Max. required
frequency
(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.
Model
Usual operation
Silent mode, outdoor temperature ≦ 15°C
Model
Usual operation
Silent mode
Model
Outdoor air temperature is
40°C or higher
Outdoor air temperature is
46°C or higher
Model
Outdoor air temperature is
18°C or higher
Model
Cooling/ Outdoor unit heat exchanger
dehumidifying temperature is 56°C or higher
Indoor unit heat exchanger
Heating
temperature is 56°C or higher
SW7-3 OFF
SW7-3 ON
SW7-3 OFF
SW7-3 ON
100
75
75
100
60
100
90
90
325
- -
'19 • PAC-T-327
...... See page 96.
............... See page 99.
Unit: rps
100 125 140
90 105 105
60 80 85
47 50 53
15 15 15
Unit: rps
100 125 140
90 105 110
60 80 85
47 50 53
15 15 15
Unit: rps
125 140
90 96
75 75
Unit: rps
125 140
80 85
Unit: rps
125 140
100 100
100 100