Field Setting from Condensing Unit
SiUS30-1301
120
Field Setting
3.7.3 Setting of Demand Operation
Setting of Demand Operation
By connecting the external contact input to the demand input of the external control adaptor for condensing 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.
If carrying out demand 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
condensing unit).
1. Connect external control adaptor for condensing unit and short-circuit terminals as required (Refer above figure).
2. While in "Setting mode 2", set the setting condition for set item No. 12 (Setting of 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 condensing 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.
Setting content
Setting method
Set item
Condition
Content
External control
adaptor
Condensing unit PCB
Demand 1
Mode 1
The compressor operates at
approx. 60
%
or less of rating.
Short circuit "1" and
"C" on the terminal
strip (TeS1).
Set item No. 32 to "Demand 1", and item No. 30
to "Level 1".
Mode 2
The compressor operates at
approx. 70
%
or less of rating.
Set item No. 32 to "Demand 1", and item No. 30
to "Level 2".
Mode 3
The compressor operates at
approx. 80
%
or less of rating.
Set item No. 32 to "Demand 1", and item No. 30
to "Level 3".
Demand 2
The compressor operates at
approx. 40
%
or less of rating.
Short circuit "2" and "C".
Set item No. 32 to "Demand 2".
Demand 3
Forced thermostat OFF.
Short circuit "3" and "C".
N
Startup control
O
Oil return operation
P=
Defrosting operation
Q
Pump down residual operation
X
X
X
X
X
X
X
X
X
X
F1
F2
P3
P4
1
2
3
C
Demand
External control
adaptor for
condensing
u
nit
Host comp
u
ter
monitor panel
or demand
controller
Condensing
u
nit
w
iring
indicated
b
y dotted line
Lo
w
noise