Daikin VRV II RXYQ5MY1B Service Manual page 158

SiE39-404
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
1. Set "External low noise / Demand YES/NO setting" to "External low noise / Demand YES".
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 outdoor unit
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.
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.
Test Operation
of the outdoor unit external control adapter)
(Set 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)
external control adapter 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".)
(Set by 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.)
Field Setting
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