Daikin VRV RXYQ72-384XAYCA, Service Manual

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Field Settings for Outdoor Unit SiUS342004EB
199 Part 5 Field Settings and Test Operation
2.6.2 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.
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
to the figure above).
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.
Description of setting Setting procedure
Setting item Description
External control adaptor for
outdoor unit
Outdoor unit PCB
Demand 1 Operate with power of
70% or less of the rating.
Short circuit between 1 and C of
the terminal block (TeS1).
Set the item 2-32 to Demand 1.
Demand 2 Operate with power of
40% or less of the rating.
Short circuit between 2 and C. Set the item 2-32 to Demand 2.
Demand 3 Operate with forced
thermostat OFF.
Short circuit between 3 and C.
—
Outdoor wiring indicated
by dotted line
External control
adaptor for outdoor unit
Host computer monitor
panel or demand controller
X
X
X X X X X X
1 2 3
C
Demand
Low
noise
F1
F2
Host computer monitor panel or demand controller
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
Outdoor
wiring
indicated by
dotted line.
X
X
X X X X X X
1 2 3
C
Demand
Low
noise
F1
F2