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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
First
No.
code
(Note 1)
No.
Description of setting
Filter contamination
Ultra-long-
- Heavy/Light
life filter
= Setting to define
time between 2 filter
cleaning display
indications. (When
Long-life
0
contamination is
filter
high, setting can be
changed to half the
time inbetween 2
Standard
filter cleaning
filter
display indications.)
10
2
Thermostat sensor selection
(20)
Setting for display of time
3
between 2 filter cleaning display
indications
Thermostat sensor in group
6
control
Output signal X1-X2 of the
0
optional KRP1B PCB kit
ON/OFF input from outside
(T1/T2 input) = Setting when
1
forced ON/OFF is to be
operated from outside.
12
Fan setting during thermostat
3
(22)
OFF at heating operation
Differential automatic
4
changeover
5
Auto-restart after power failure Disabled
9
Fixed cool/heat master
15
Drain pump operation +
3
(25)
humidifier interlock
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
Second code No. (Note 2)
01
02
03
±10,000 hrs.
±5,000 hrs.
±2,500 hrs.
±1,250 hrs.
—
—
±200 hrs.
±100 hrs.
Use both the
unit sensor (or
Use unit sensor
remote sensor if
Use remote
only (or remote
installed) AND
controller
sensor if
—
the remote
sensor only.
installed).
controller
(See note 5+6)
(See note 5+6)
sensor.
(See note 5+6)
Display
Do not display
—
—
Use both the
unit senor (or
Use unit sensor
remote sensor if
only (or remote
installed) AND
sensor if
—
—
the remote
installed).
controller
(See note 6)
sensor. (See
note 4+5+6)
Thermostat-on +
Mal-
—
Operation
compressor run
function
ON/OFF
Forced OFF
—
—
operation
OFF
LL
Set speed
—
(See note 3)
3°C
0°C
1°C
2°C
(See
note 7)
Enabled
—
—
Disabled
Enabled
—
—
Equipped
Not equipped
—
—
04
8
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