-
323
-
'12 • PAC-T-173
2) The outdoor unit 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.
3) Rage of the outdoor unit fan speed under this control is as follows.
a)
Lower limit: 130rpm
b)
Upper limit: 500rpm
4) As any of the following conditions is established, this control terminates.
a) When the outdoor air temperature is in the zone
and the outdoor unit heat exchanger temperature at 30°C or
higher is established for 40 seconds or more continuously.
b) When the outdoor fan speed is 500rpm and the outdoor unit heat exchanger temperature at 30°C or higher is
established for 40 seconds or more continuously.
c) When the outdoor unit heat changer temperature at 45°C or higher is established for 40 seconds or more.
(e)
Outdoor unit fan control by the power transistor radiator fin temperature
When all the following conditions are established later than 3 minutes after the start of compressor, the following control
is implemented.
1) Cooling/dehumidifying
a)
Outdoor air temperature Tho-A
33°C
b)
Compressor’s actual frequency
A
rps
c)
Power transistor radiator fin temperature
C
°C
2) Heating
a)
Outdoor air temperature Tho-A 16°C
b)
Compressor’s actual frequency
B
rps
c)
Power transistor radiator fin temperature
C
°C
3) Control contents
a) Raises the outdoor unit fan tap by 1 tap.
b) When the sampling is for 60 minutes and the value of power transistor radiator fin temperature (Tho-P) is as
follows.
When the power transistor radiator fin temperature (Tho-P)
C
°C, the outdoor unit fan tap is raised by 1 speed
further.
When
C
°C > power transistor radiator fin temperature (Tho-P)
D
°C, present outdoor unit fan tap is
maintained.
When the power transistor radiator fin temperature (Tho-P)
D
°C, the outdoor unit fan tap is dropped by 1
speed.
4) Ending conditions
When the operation under the condition of item b),
above and with the outdoor unit fan tap, which is determined
by the item (b) is detected 2 times consecutively.
• Compressor’s frequency and power transistor radiator fin temperature
Item
Model
A
B
C
D
71
60
70
80
75
100
85
85
72
68
125, 140
65
65
72
68
(f)
Caution at the outdoor unit fan start control (3 phase model only)
When the outdoor unit fan is running at 400min
-1
before operating the compressor, it may operate with the compressor
only, without starting up the outdoor fan This is normal.
(g)
Snow protection fan control
If the dip switch (SW3-2) on the outdoor unit control PCB is turned ON, the outdoor unit fan is operated for 30 seconds
at 4 tap speed once in every 10 minutes depending on the outdoor air temperature (detected with Tho-A) in the stop mode
or anomalous stop mode.
Snow protection fan
control ON
Outdoor air temp. (°C)
3
5
Snow protection fan
control OFF
Summary of Contents for FDC Series
Page 95: ... 94 12 PAC T 173 Models FDT100VF 125VF 140VF H H H H H C B A F G D G PJF000Z285 ...
Page 98: ... 97 12 PAC T 173 Models FDEN60VF 71VF C 2 C 1 A B A B D C 1 C 2 C 1 C 2 E G F B PFA003Z817 ...
Page 113: ... 112 12 PAC T 173 b Wireless remote controller RCN E1R 60 17 150 Unit mm ...
Page 278: ... 277 12 PAC T 173 ー K ...
Page 346: ... 345 12 PAC T 173 Power PCB 1BSU OVNCFS 4GRNCEG VJG 2 ...
Page 518: ... 517 12 PAC T 173 3 5 SUPER LINK E BOARD SC ADNA E F SL2NA E and SL3N AE BE to control ...
Page 519: ... 518 12 PAC T 173 ...
