Installation and operation manual
7
FXSQ20~125M8V3B
VRV System air conditioners
4PW25083-1C
PRECAUTIONS
■
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.
■
For a group control remote controller, choose the remote
controller that suits the indoor unit which has the most functions.
■
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.
Summary of field settings
Control by 2 Remote Controllers (Controlling 1 indoor
unit by 2 remote controllers)
When using 2 remote controllers, one must be set to "MAIN" and the
other to "SUB".
MAIN/SUB CHANGEOVER
■
Insert a wedge-head screwdriver into the recess between the
upper and lower part of the remote controller and, working from
the 2 positions, pry off the upper part.
(The remote controller PC board is attached to the upper part of
the remote controller.)
■
Turn the main/sub changeover switch on one of the two remote
controller PC boards to "S".
(Leave the switch of the other remote controller set to "M".)
Computerised control (forced off and on/off operation)
1
Wire specifications and how to perform wiring
-
Connect input from outside to terminals T1 and T2 of the
terminal board (remote controller to transmission wiring).
2
Actuation
-
The following table explains "forced off" and "on/off
operations" in response to input A.
3
How to select forced off and on/off operation
-
Turn the power on and then use the remote controller to
select operation.
-
Set the remote controller to the field set mode. For details,
refer to the chapter "How to set in the field", in the remote
controller manual.
-
When in the field set mode, select mode No. 12, then set the
first code No. to "1". Then set second code (position) No. to
"01" for forced off and to "02" for on/off operation. (forced off
at factory set.)
Centralized control
For centralized control, it is necessary to designate the group No. For
details, refer to the manual of each optional controller for centralized
control.
I
NSTALLATION
OF
THE
DECORATION
PANEL
Refer to the installation manual attached to the decoration panel.
After installing the decoration panel, ensure that there is no space
between the unit body and decoration panel.
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
Light
±10,000 hrs.
Hea
vy
±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
—
—
13
(23)
6
Setting the external static
pressure
(To be set in function of the
connected duct resistance)
Normal
High static
pressure
Low static
pressure
—
15
(25)
3
Drain pump ope
humidifier interlock
Equipped
Not 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 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
1
Remote controller PC board
2
Factory setting
3
Only one remote controller needs to be changed
Wire specification
Sheathed vinyl cord or cable (2 wire)
Gauge
0.75-1.25 mm
2
Length
Max. 100 m
External terminal
Contact that can ensure the minimum
applicable load of 15 V DC, 10 mA
1
Input A
Forced off
on/off operation
Input "on" stops operation
input off
➜
on: turns on the unit
(impossible by remote controllers)
Input "off" enables control
input on
➜
off: turns off the unit by remote
controller
1
Second code No.
2
Mode No.
3
First code No.
4
Field set mode
