Mitsubishi Heavy Industries V Multi FDC71VNX Technical Manual page 338

(b) Fan tap control during Cooling/Defumidifying operation
Fan taps are selected depending on the outdoor heat exchanger temperature (Tho-R1, R2) and the outdoor air temperature (Tho-A).
Note (1) It is detected by Tho-R1 or R2, whichever the higher.
zone
zone Tap 5(6)
zone Tap 5
zone Tap 4
zone Tap 3
Note (1) Value in ( ) are for the model FDC200.
zone
41(30) 43(37)
zone
15 18
Outdoor air temperature (˚C)
(c) Fan tap control during heating operation
Fan taps are selected depending on the outdoor heat exchanger temperature (Tho-R1, R2) and the outdoor air temperature (Tho-A).
Note (1) It is detected by Tho-R1 or R2, whichever the lower.
zone
zone Tap 3
zone Tap 3
zone Tap 4
Note (1) Value in ( ) are for the model FDC200.
zone
12
zone
3 9
Outdoor air temperature (˚C)
(d) Outdoor fan control at cooling low outdoor air
(i) When all the following conditions are established after the start of compressor, the following control is implemented.
If the outdoor air temperature (Tho-A) is in the zone
seconds from the start of outdoor fan and the outdoor fan is at the tap 1 speed, the outdoor fan speed is controlled
according to the outdoor heat exchanger temperature (Tho-R1, R2).
Note (1) It is detected with Tho-R1 or R2, whichever the higher.
zone
5 10
Outdoor air temperature (˚C)
(ii) The outdoor heat exchanger temperature is detected always and, when the number of revolutions of the outdoor fan
speed has been increased or decreased, there is no change of fan speed for 20 seconds.
(iii) Rage of the outdoor fan speed under this control is as follows.
1) Lower limit: 130min
2) Upper limit: 500min
(iv) As any of the following conditions is established, this control terminates.
1) When the outdoor air temperature is in the zone
is established for 40 seconds or more continuously.
2) When the outdoor fan speed is 500min
established for 40 seconds or more continuously.
3) When the outdoor heat changer temperature at 45°C (model FDC250:50°C) or higher is established for 40 seconds
or more.
zone zone
Tap 5(6) Tap 6(5/6) Tap 4
Tap 5 Tap 4 Tap 3
Tap 4 Tap 3 Tap 2
Tap 3 Tap 2 Tap 1
zone
zone
46 48
- zone (Model FDC200 only)
Tap 5
100
Compressor speed (rps)
• Silent mode only
zone zone
Tap 3 Tap 4
Tap 4 Tap 5
Tap 7(5) Tap 7(6)
zone
15
zone
zone
Outdoor unit fan speed
-10min
- 1
- 1
- 1
and the outdoor heat exchanger temperature at 30°C or higher is
337
-
• Silent mode only
zone zone
zone Tap 5
zone Tap 4
zone Tap 4
zone Tap 3
Note (1) Value in ( ) is for the model FDC200.
zone
Tap 6
20
Outdoor heat exchanger temperature (˚C)
105
Note (1) Value in ( ) are for the model FDC200.
zone zone
zone Tap 3 Tap 3
zone Tap 3 Tap 3
zone Tap 3(4) Tap 5(4)
Note (1) Value in ( ) are for the model FDC200.
zone
zone
2(1) 4(3)
-2 0
Outdoor heat exchanger temperature (˚C)
in the cooling/dehumidifying mode, it has elapsed 20
Outdoor unit fan speed
+10min
Retained
-1
20 30
Outdoor heat exchanger temperature (˚C)
and the outdoor heat exchanger temperature at 30°C or higher
-
'19 • PAC-T-327
zone zone
Tap 5 Tap 4(5)
Tap 4 Tap 3
Tap 3 Tap 3
Tap 3 Tap 2
zone
43 51(53)
zone
33 40
30
zone
Tap 3
Tap 4
Tap 6(5)
Note (1) Value in ( ) are for the model
FDC200.
-1
zone
Tap 4
Tap 3
Tap 2
Tap 1
zone