Daikin VRV EMERION RXYQ-AATJA Service Manual page 219

SiUS342303E
2.5.2 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
Demand
Demand
Demand
However, the demand operation does not occur in the following operation modes.
1. Startup control
2. Oil return operation
3. Defrost operation
4. Pump down residual 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
2. While in setting mode 2, set the item 2-12 (External low noise or demand setting) to ON.
3. If necessary, while in setting mode 2, select a demand 1 level for the item 2-30.
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, set the item 2-32 (Setting of alternate demand) to ON.
2. While in setting mode 2, select a demand 1 level for the item 2-30.
Part 5 Field Settings and Test Operation
Description of setting
Description
item
Operate with power of
1 60-95% or less of the rating.
Operate with power of
2 40-55% or less of the rating.
Operate with forced
3 thermostat OFF.
External control
adaptor for outdoor unit
Host computer monitor
panel or demand controller
to the figure above).
To other external control adaptor
for outdoor unit
External control adaptor for
outdoor unit
Short circuit between "1" and "C"
of the terminal block (TeS1).
Short circuit between "2" and
"C".
Short circuit between "3" and
"C".
F1
X
F2
X
Demand
Low
C
noise
1 2 3
X X X X X
If carrying out demand or low-noise input, connect the terminals
of the external control adaptor for outdoor unit as shown below.
F1
X
F2
X
Demand
C
1 2 3
X X X X
Host computer monitor panel or demand controller
Field Setting from Outdoor Unit
Setting procedure
Outdoor unit PCB
Set the item 2-32 to Demand 1.
Set the item 2-32 to Demand 2.
—
X
Outdoor wiring indicated
by dotted line
Low
noise
X X
Outdoor
wiring
indicated by
dotted line.
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