Daikin RZQ Series FCQ20EVA Service Manual page 67

SiME281501E
2.4.1 Low Night Noise Operation
Purpose
Lower the operation sound of the outdoor unit.
Setting
Silent Operation can be activated by:
1. Automatic control (By field setting from remote controller)
2. External activation (from optional PCB KRP58M51)
 Low Night Noise Operation by Automatic Control
Table
Silent operation can be set by field setting from the wired remote controller:
Description Mode No.
Low night noise 16(26)
Operation
Low night noise
operation start &
stop time
Method
When setting mode 16(26)-0-02, low night noise operation will be carried out by presuming the current time in
accordance with the outdoor air temperature.
Automatic mode will start when the outdoor temperature is = average max of last 10 days -5°C and will be
conducted for 10 hours.
The maximum outdoor air temperature is supposed to occur at 14:00h.
As the time judgement is made in accordance with the outdoor air temperature, the above mentioned timing is
an estimation only.
Capacity priority setting
When setting mode 16(26)-0-04, the low night noise operation will be stopped when the heating or cooling
load increases. In that case, the operation will return to normal operation. The unit will return to low night
noise operation when the heating or cooling load decreases again.
Graph
Field Setting
First Code Second Code No.
No.
01
0 Disable
1 —
Maximum
outdoor air
+8 hours
temperature
Trend line indicating fluctuation of
outdoor air temperature in 24 hours.
02 03
Low night Capacity
noise priority
operation setting
(when
using
KRP58M51
option)
— 22h00 ~
06h00
(Level 2)
Start low
night noise
+10 hours
operation
Field Setting from Remote Controller
: Factory setting
04 05
Low night —
noise
operation +
capacity
priority
22h00 ~ 20h00 ~
08h00 08h00
(Level 2) (Level 2)
End low
night noise
operation
06
—
22h00 ~
08h00
(Level 3)
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