Daikin VRV III REYQ8PY1, Service Manual

Page: 209 / 452

Field Setting Si37-701
198 Test Operation
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.
A. When the low noise operation is carried out by external instructions (with the use
of the external control adaptor for outdoor unit)
1. Connect the external adaptor for the outdoor unit, and then connect the external input wiring
to the low-noise operation input terminal on the terminal block (X1M). (Refer to the figure
shown below.)
2. While in "Setting mode 2", set the setting condition for set item No. 12 (Setting of external
low noise/demand operation) to "YES".
3. If necessary, while in "Setting mode 2", select the setting condition (i.e., L
evel
1", "
Level
2",
or "Level 3") for set item No. 25 (Setting of external low noise level).
4. If necessary, while in "Setting mode 2", set the setting condition for the set item No. 29
(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.)
B. When the low noise operation is carried out automatically at night (The external
control adaptor for outdoor unit is not required)
1. While in "Setting mode 2", select the setting condition (i.e., "
Level
1", "
Level
2", or "
Level
3")
for set item No. 22 (Setting of nighttime low noise level).
2. If necessary, while in "Setting mode 2", select the setting condition (i.e., "20:00", "22:00", or
"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.)
3. If necessary, while in "Setting mode 2", select the setting condition (i.e., "06:00", "07:00", or
"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.)
4. If necessary, while in "Setting mode 2", set the setting condition for set item No. 29 (Setting
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.)
Setting Content
Level 1 Set the outdoor unit fan to Step 5 or lower.
Level 2 Set the outdoor unit fan to Step 4 or lower.
Level 3 Set the outdoor unit fan to Step 3 or lower.
To other external control adaptor
for outdoor unit
Host computer monitor panel or demand controller
Demand
2
P
Outside
wiring
indicated by
dotted line.
3
If carrying out demand or low-noise input, connect the terminals
of the external control adaptor for outdoor unit as shown below.
F1
F2
N
1 C
X1M
Low
noise