8
Precautions
1.
A single switch can be used to supply power to units on the
same system. However, branch switches and branch circuit
breakers must be selected carefully.
2.
For a group control remote controller, choose the remote
controller that suits the indoor unit which has the most functions.
3.
All transmission wiring except for the remote controller wiring is
polarized and must match the terminal symbol.
4.
In case of group control, perform the remote controller wiring to
the master unit when connecting to the simultaneous operation
system (wiring to the slave unit is unnecessary).
5.
When controlling the simultaneous operation system with
2 remote controllers, connect it to the master unit (wiring to the
slave unit is unnecessary).
6.
Be sure to connect the wiring to the master unit when combining
with a simultaneous operating multi-type in group control.
7.
Do not ground the equipment on gas pipes, water pipes,
lightning rods or crossground with telephones. Improper
grounding could result in electric shock.
Field setting
Field setting must be made on the remote controller in function of the
installation condition.
Setting can be made by changing the "Mode number", "First
code No." and "Second code No.".
For setting and operation, refer to the "Field settings" in the
installation manual of the remote controller.
Summary of field settings
Mode
No.
(Note 1)
First
code
No.
Description of setting
Second code No. (Note 2)
01
02
03
04
10
(20)
0
Filter contamination
- Heavy/Light
= Setting to define
time between 2 filter
cleaning display
indications. (When
contamination is
high, setting can be
changed to half the
time inbetween
2 filter cleaning
display indications.)
Ultra-long-
life filter
Li
gh
t
±10,000 hrs.
He
av
y
±5,000 hrs.
—
—
Long-life
filter
±2,500 hrs.
±1,250 hrs.
Standard
filter
±200 hrs.
±100 hrs.
2
Thermostat sensor selection
Use both the
unit sensor (or
remote sensor if
installed) AND
the remote
controller
sensor.
(See note 5+6)
Use unit sensor
only (or remote
sensor if
installed).
(See note 5+6)
Use remote
controller
sensor only.
(See note 5+6)
—
3
Setting for display of time
between 2 filter cleaning display
indications
Display
Do not display
—
—
6
Thermostat sensor in group
control
Use unit sensor
only (or remote
sensor if
installed).
(See note 6)
Use both the
unit senor (or
remote sensor if
installed) AND
the remote
controller
sensor. (See
note 4+5+6)
—
—
12
(22)
0
Output signal X1-X2 of the
optional KRP1B PCB kit
Thermostat-on +
compressor run
—
Operation
Mal-
function
1
ON/OFF input from outside
(T1/T2 input) = Setting when
forced ON/OFF is to be
operated from outside.
Forced OFF
ON/OFF
operation
—
—
3
Fan setting during thermostat
OFF at heating operation
LL
Set speed
OFF
(See note 3)
—
4
Differential automatic
changeover
0°C
1°C
2°C
3°C
(See
note 7)
5
Auto-restart after power failure Disabled
Enabled
—
—
9
Fixed cool/heat master
Disabled
Enabled
—
—
15
(25)
3
Drain pump ope
humidifier interlock
Not equipped
Equipped
—
—
Note 1 :
Setting is carried out in the group mode, however, if the mode number inside parentheses is selected,
indoor units can also be set individually.
Note 2 :
Factory settings of the Second code No. are marked in grey backgrounds.
Note 3 :
Only use in combination with optional remote sensor or when setting 10-2-03 is used.
Note 4 :
If group control is selected and remote control sensor is to be used, then set 10-6-02 & 10-2-03.
Note 5 :
If setting 10-6-02 + 10-2-01 or 10-2-02 or 10-2-03 are set at the same time, then setting 10-2-01,
10-2-02 or 10-2-03 have priority.
Note 6 :
If setting 10-6-01 + 10-2-01 or 10-2-02 or 10-2-03 are set at the same time, then setting for group
connection, 10-6-01 has priority and for individual connection, 10-2-01, 10-2-02 or 10-2-03 have priority.
Note 7 :
More settings for Differential automatic change over temperatures are:
Second code No.
05
4°C
06
5°C
07
6°C
08
7°C
