01-27
1-22. LOW NOISE OPERATION
Low Noise mode
LEVEL 1
LEVEL 2
Cooling
Model 45
Model 54
Heating
Cooling
Heating
Outdoor fan speed
[rpm]
Compressor speed
[rps]
The compressor speed and the outdoor unit fan sp
Capacity priority mode
(1) Operation condition
The function setting is set the “1” for the capacity priority mode.
When detect the shortage capacity or enough capacity condition continuous 30 minute,
the mode is upped or downed for 1 step.
(2) Check the capacity condition
30min
Enough
30min
Enough
30min
Shortage
30min
Shortage
(3) Operation
Automatic switching 1
Level 1 setting
Automatic switching 2
Level 2 setting
Shortage
Enough
eed are limited to reduce the operation noise
by External Input.
During the LOW NOISE OPERATION,
"CURRENT OVERLOAD OPERATION", "ECONOMY OPERATION" and "PEAK CUT OPERATION"
are effective, and the outdoor unit operates by lowest current of them.
However, during the DEFROST OPERATION, the compressor operates by the speed
for DEFROST OPERATION.
( Table 20 : Detail of Low Noise Operation )
540/520
570/550
75
85
58
68
68
75
54
62
Normal
operation
*The performance drops when operating in the
LOW NOISE OPERATION
.
Low noise
mode 2
Low noise
mode 1
30min
Enough
30min
Shortage
Normal
operation
Low noise
mode 1
Required compressor speed > Limited compressor speed of low noise mode
Required compressor speed < Limited compressor speed of low noise mode
(Upper / Lower)
540/520
570/550
