Daikin VRV II-Q RQYQ8-48PY1B Service Manual page 96

Field Setting from Outdoor Unit
2.1.6 Setting of Demand Operation
By connecting the external contact input to the demand input of the outdoor unit external control adaptor for
outdoor unit (optional), the power consumption of unit operation can be saved suppressing the compressor
operating condition.
Setting content
Set item Condition
The compressor operates at
Mode 1
approx. 60% or less of rating.
The compressor operates at
Demand 1 Mode 2
approx. 70% or less of rating.
The compressor operates at
Mode 3
approx. 80% or less of rating.
The compressor operates at
Demand 2 
approx. 40% or less of rating. Short circuit "2" and "C".
Demand 3 
Forced thermostat OFF.
*: However the demand operation does not occur in the following operation modes.
Startup control
Defrosting operation
If carrying out demand or low-noise input, connect the adaptor's terminals as shown below.
A. When the demand operation is carried out by external contact (with the use of the external control
adaptor for outdoor unit).
1. Connect external control adaptor for outdoor unit and short circuit terminals as required (Refer to above
figure).
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 set item No. 30 (Setting of Demand 1 level) and then set
the setting condition to targeted mode.
B. When the normal demand operation is carried out. (Use of the external control adaptor for outdoor
unit is not required.)
1. While in "Setting mode 2", make setting of the set item No. 32 (Setting of alternate demand) to "ON".
2. While in "Setting mode 2", select the set item No. 30 (Setting of Demand 1 level) and then set the setting
condition to targeted mode.
86
External control
Content
Short circuit "1" and
"C" on the terminal
strip (TeS1).
Short circuit "3" and "C".
Oil return operation
Pump down residual operation
F1
X
F2
X
P3
X
P4
X
External control
X X
adaptor for
1 2
outdoor unit
Demand
Host computer
monitor panel
or demand
controller
Setting method
adaptor
Set item No. 32 to "Demand 1", and item No.
Set item No. 32 to "Demand 1", and item No.
Set item No. 32 to "Demand 1", and item No.
Set item No. 32 to "Demand 2".
X X X X
3 C
Low
noise
Outside wiring indicated
by dotted line
SiBE341027
Outdoor unit PCB
30 to "Level 1".
30 to "Level 2".
30 to "Level 3".

Test Operation