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7-3-6. Night operation (sound reduction) control
Operation
This function decreases noise at night or other times as necessary.
The input signal is recognized during its rising / falling phase.
(After reaching the top / bottom of the rising / falling edge, the signal must remain there for at least 100 ms.)
The system's capacity is reduced during low-noise operation.
The table below provides a rough guide to this capacity reduction.
* Position of noise measuring device: 1 m from the front face of the set and 1.5 m above ground (in anechoic
Terminal
Input signal
Operation
COOL
(SW1)
Night time control
Normal operation
Outdoor unit
(base unit)
Relative to maximum capacity
Cooling
Heating
Model 0404
approx. 90 %
approx. 95 %
Model 0504
approx. 80 %
approx. 80 %
Outdoor unit
COM
Outdoor unit
interface PCB
Optional PCB
Connection
cable
Locally procured
Shield
wire
7 1 J
P
8 0
5
N
C
TB1
COOL
HEAT
SW1
SW1: Night time signal switch
ON
OFF
ON
OFF
Model 0604
approx. 80 %
approx. 75 %
Cooling
Heating
46
46
47
48
48
49
During low-noise mode* dB(A)
Capacity
chambers)
43
A10-1510.indb 43
A10-1510.indb 43
2016/04/08 17:20:51
2016/04/08 17:20:51