286
Optional Function
4.3.2 Night-Shift (Low Noise)
Press “PSW3” and select the setting condition “1” at the night shift (low noise) “ ”. Then, this function can be set. This
setting is available when the ambient temperature is 86°F(30
℃
) or less at the cooling operation. The outdoor fan operation is
controlled by fan controller as shown below.
The night shift operation shall be applied in case that the cooling capacity has the margin to be allowed for the capacity
decrease and the low sound operation is required especially in the night time.
(1) Outdoor Fan
(2) Frequency Range (Cooling Operation)
NOTE:
For the combination of outdoor units, the frequency for each outdoor unit becomes less than the value above.
72
77%
80%
88%
9277 86
Outdoor Temperature (°F)
Maximum
Rotation
(Rotation Ratio)
[ AVWT-***FFFH
]
Outdoor Unit
Capacity
(kBtu/h)
Maximum
Frequency
(Hz)
Conditions
When Night Shift
is not Set
ni=0
72 70
Except for
the Conditions
on the Right
96 90
120 105
144 130
168 140
192 175
Outdoor Unit
Capacity
(kBtu/h)
Maximum
Frequency
(Hz)
Target
Operating Noise
(dB)
When Night Shift
is Set
ni=1
72 60 48
96 60 48
120 70 50
144 83 51
168 83 51
192 90 52