Daikin REYQ72-432XAYCU, Service Manual

Page: 262 / 482

Field Setting from Outdoor Unit SiUS371901EB
255 Part 5 Field Settings and Test Operation
2.7.2 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.
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".
–
A.
1.
2.
3.
When the demand operation is carried out by external contact (with the use
of the external control adaptor for outdoor unit).
Connect external control adaptor for outdoor unit and short circuit terminals as
required (Refer to the figure above).
While in setting mode 2, set the item 2-12 (External low noise or demand setting)
to ON.
If necessary, while in setting mode 2, select a demand 1 level for the item 2-30.
O u tdoor w iring indicated
b y dotted line
External control
adaptor for
o
u tdoor u nit
Host comp u ter
monitor panel
or demand
controller
X
X
X
X
F1
F2
P3
P4
F1
F2
P3
P4
X X X X X X
1 2 3 C
Demand
Lo w
noise