Daikin REYQ8-48PY1B Service Manual page 234

Field Setting
3.2.5 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 adaptor (optional), you can lower operating noise.
Level 1
Level 2
Level 3
A. When the low noise operation is carried out by external contact (with the use of the
1. Connect the external adaptor for the outdoor unit, and then connect the external input wiring
2. While in "Setting mode 2", set the setting condition for set item No. 12 (Setting of external
3. If necessary, while in "Setting mode 2", select the setting condition (i.e., L
4. If necessary, while in "Setting mode 2", set the setting condition for the set item No. 29
B. When the low noise operation is carried out automatically at night (The external
1. While in "Setting mode 2", select the setting condition (i.e., "
2. If necessary, while in "Setting mode 2", select the setting condition (i.e., "20:00", "22:00", or
3. If necessary, while in "Setting mode 2", select the setting condition (i.e., "06:00", "07:00", or
4. If necessary, while in "Setting mode 2", set the setting condition for set item No. 29 (Setting
223
Setting
Set the outdoor unit fan to Step 5 or lower.
Set the outdoor unit fan to Step 4 or lower.
Set the outdoor unit fan to Step 3 or lower.
external control adaptor for outdoor unit)
to the low-noise operation input terminal on the terminal block (X1M). (Refer to the figure
shown below.)
low noise/demand operation) to "YES".
or "Level 3") for set item No. 25 (Setting of external low noise level).
(Setting of capacity precedence) to "ON".
(If the condition is set to "ON", when the air-conditioning load reaches a high level, the low
noise operation command will be ignored to put the system into normal operation mode.)
control adaptor for outdoor unit is not required)
for set item No. 22 (Setting of nighttime low noise level).
"24:00") for set item No. 26 (Setting of start time of nighttime low noise operation).
(Use the start time as a guide since it is estimated according to outdoor temperatures.)
"08:00") for set item No. 27 (Setting of end time of nighttime low noise operation).
(Use the end time as a guide since it is estimated according to outdoor temperatures.)
of capacity precedence) to "ON".
(If the condition is set to "ON", when the air-conditioning load reaches a high level, the
system will be put into normal operation mode even during nighttime.)
If carrying out demand or low-noise input, connect the terminals
of the external control adaptor for outdoor unit as shown below.
To other external control adaptor
for outdoor unit
Content
F1
F2
N
P
X1M
1 2 3 C Low
noise
Demand
Host computer monitor panel or demand controller
SiBE37-701_B
1", "
evel Level
1", " 2", or "
Level Level Level
Outside
wiring
indicated by
dotted line.
Test Operation
2",
3")