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W
IRING EXAMPLE
Fit the power supply wiring of each unit with a switch and fuse as
shown in
figure
18.
1
Outdoor unit
2
Power supply
3
Main switch
4
BS unit (only for heat recovery system)
5
Indoor unit
6
Remote controller
7
Switch
8
Fuse
Power supply wiring
Transmission and remote controller wiring
Complete system example (3 systems)
See figures 19,
20
and 21.
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
19).
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 group control. The address is automati-
cally set when 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.
3.
Do not ground the equipment on gas pipes, water pipes,
lightning rods or crossground with telephones. Improper
grounding could result in electric shock.
F
IELD 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.
FXZQ20~50M8V1B
VRV System air conditioners
4PW25085-1C
(See figure
20).
21).
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.)
Long-life filter type
Change the setting when ultra-
long-life filter is installed.
1
This setting is important for time
between 2 filter cleaning display
indications (refer to 10-0-0X).
10
(20)
2
Thermostat sensor selection
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
2
changeover = Setting when
12
remote sensor is used.
(22)
Fan setting during thermostat
3
OFF at heating operation
Differential automatic
4
changeover
5
Auto-restart after power failure Disabled
9
Fixed cool/heat master
Setting for air outlet velocity
0
This setting is to be changed in
function of ceiling height.
Selection for air flow direction
This setting is to be changed
1
when blocking pad optional kit
is used.
13
(23)
Airflow direction range setting
This setting is to be changed
4
when range of swing flap
movement needs to be
changed.
Setting for adjustment of fan
5
speed (phase control)
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 remocon 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.
Ultra-long-life
Long-life filter
—
filter
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
—
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 +
—
Operation
compressor run
ON/OFF
Forced OFF
—
operation
1°C
0.5°C
—
OFF
LL
Set speed
(See note 3)
0°C
1°C
2°C
Enabled
—
Disabled
Enabled
—
≤2.7 m
>2.7 ≤3.0 m
>3.0 ≤3.5 m
4-way flow
3-way flow
2-way flow
Upper
Normal
Lower
Standard
Option 1
Option 2
Equipped
Not equipped
—
Installation and operation manual
04
—
—
—
—
—
—
Mal-
function
—
—
—
3°C
(See
note 7)
—
—
—
—
—
—
—
7
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