Daikin RXYQ72 Serivce Manual page 105

Field Setting
3.2.3 Setting of Low Noise Operation and Demand Operation
Setting of Low Noise Operation
By connecting the external contact input to the low noise input of the outdoor unit external control
adapter (optional), you can lower operating noise by 2-3 dB.
A. When the low noise operation is carried out by external instructions (with the use of
1. Set "External low noise / Demand YES/NO setting" to "External low noise / Demand YES". (Set
2. Set "External low noise level setting" on the outdoor unit PC board, as the need arises.
3. Set "Capacity precedence setting" on the outdoor unit PC board, as the need arises.
B. When the low noise operation is carried out automatically at night (The external control
1. Set "Night-time low noise setting" on the outdoor unit PC board. (Set by Setting Mode 2)
2. Set "Night-time low noise start setting" on the outdoor unit PC board, as the need arises. (Set by
3. Set "Night-time low noise end setting" on the outdoor unit PC board, as the need arises.
4. Set "Capacity precedence setting" on the outdoor unit PC board, as the need arises.
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the external control adapter for outdoor unit)
by Setting Mode 2)
(Lower noise operation can be carried out by "Mode 2" than by "Mode 1", and by "Mode 3" than
by "Mode 2".)
(If set to "ON", when air conditioning load gets higher, the low noise instructions are neglected
to switch to normal operation.) (Set by Setting Mode 2)
adapter for outdoor unit is not required)
(Lower noise operation can be carried out by "Mode 2" than by "Mode 1", and by "Mode 3" than
by "Mode 2".)
Setting Mode 2)
(Since the time is presumed in accordance with the outdoor temperature, the starting time is a
target only.)
(Set by Setting Mode 2)
(Since the time is presumed in accordance with the outdoor temperature, the ending time is a
target only.)
(Set by Setting Mode 2)
(If set to "ON", when air conditioning load gets higher, the status is switched to normal operation
even at night.)
SiUS39-601
Test Operation