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2
Keep total current of crossover wiring between indoor units less than
12 A. Branch the line outside the terminal block of the unit in
accordance with electrical equipment standards, when using two power
wiring of a gauge greater than 2 mm
The branch must be sheathed in order to provide an equal or greater
degree of insulation as power supply wiring itself.
3
Do not connect wires of different gauge to the same grounding terminal.
Looseness in the connection may deteriorate the protection.
4
Remote controller wiring and unit transmission wiring should be located
at least 50 mm away from power supply wiring. Not following this
guideline may result in malfunction due to electrical noise.
5
For the remote controller wiring, refer to the "Installation manual of the
remote controller" supplied with the remote controller.
NOTE
The customer has the ability to select the remote
controller thermistor.
6
Never connect the power supply wiring to the terminal block for
transmission wiring. This mistake could damage the entire system.
7
Use only specified wires and tightly connect wires to the terminals. Be
careful that wires do not place external stress on the terminals. Keep
wiring in neat order so that they do not obstruct other equipment such
as popping open the service cover. Make sure the cover closes tight.
Incomplete connections could result in overheating, and in the worse
case, electric shock or fire.
Wiring example
Fit the power supply wiring of each unit with a switch and fuse as shown in
figure
17.
1
Power supply
2
Main switch
3
Power supply wiring
4
Unit transmission wiring
5
Switch
6
Fuse
7
BS unit (REYQ only)
8
Indoor unit
9
Remote controller
Complete system example (3 systems)
See figures 13,
14
and 15.
1
Outdoor unit
2
Indoor unit
3
Remote controller (Optional accessories)
4
Most downstream indoor unit
5
For use with 2 remote controllers
6
BS unit
When using 1 remote controller for 1 indoor unit. (Normal operation)
(See figure
13).
For group control or use with 2 remote controllers
When including BS unit
(See figure
NOTE
It is not necessary to designate indoor unit address
when
using
automatically set when the power is activated.
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.
2
(Ø1.6).
(See figure
15).
group
control.
The
address
3.
Do not ground the equipment on gas pipes, water pipes, lightning rods
or crossground with telephones. Improper grounding could result in
electric shock.
Installation of the decoration panel
Refer to the installation manual delivered with the decoration panel.
After installing the decoration panel, ensure that there is no space
between the unit body and decoration panel. Otherwise air may
leak through the gap and cause dewdrop.
Field setting
Field setting must be made from the remote controller in
accordance with 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 setting" in the
installation manual of the remote controller.
Summary of field settings
Mode
First
No.
code
(Note 1)
No. Description of setting
Filter contamination
- Heavy/Light
= Setting to define
time between 2 filter
indications. (When
0
contamination is
high, setting can be
changed to half the
time inbetween 2
display indications.)
2
Thermostat sensor selection
10
(20)
Setting for display of time
3
between 2 filter cleaning display
indications
Information to I-manager,
5
I-touch controller
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.
Thermostat differential
12
2
changeover = Setting when
(22)
remote sensor is used.
14).
Fan setting during thermostat
3
OFF at heating operation
Differential automatic
4
changeover
is
5
Auto-restart after power failure Disabled
Second code No. (Note 2)
01
cleaning display
Long-life
±2,500 hrs.
filter
filter cleaning
Use both the
unit sensor (or
Use unit sensor
remote sensor if
only (or remote
installed) AND
sensor if
the remote
installed).
controller
(See note 5+6)
sensor.
(See note 5+6)
Display
Do not display
Only unit sensor
Sensor value as
value (or remote
set by 10-2-0X
sensor value if
or 10-6-0X.
installed).
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 +
—
compressor run
ON/OFF
Forced OFF
operation
1°C
0.5°C
LL
Set speed
0°C
1°C
Enabled
02
03
04
±1,250 hrs.
–
–
Use remote
controller
—
sensor only.
(See note 5+6)
—
—
—
—
—
—
Mal-
Operation
function
—
—
—
—
OFF
—
(See note 3)
3°C
2°C
(See
note 7)
—
—
Installation and operation manual
8
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