Kaysun KC-FCS2 Operating instructions

INSTALLATION & OWNER’S MANUAL
Wired Controller
KC-FCS2
Thank you very much for purchasing our product.
Before using your unit, please read this manual carefully and keep it for future reference.

•This manual gives detailed description of the precautions that
should be brought to your attention during operation.
•In order to ensure correct service of the wired controller
please read this manual carefully before using the unit.
•For convenience of future reference, keep this manual after
reading it.
16117100001793 V.E

CONTENTS
1 OPERATION
•1.1 Operation precautions ........................................01
•1.2 Operation conditions...........................................02
•1.3 Main functions.....................................................02
•1.4 User interface .....................................................03
•1.5 Instructions for use .............................................04
•1.6 Further details.....................................................05
2 INSTALLATION
•2.1 Safety precautions ..............................................06
•2.2 Installation accessory .........................................07
•2.3 Installation dimensions .......................................08
•2.4 Installation method..............................................09
•2.5 Schematic drawing of installation ....................... 16

0201
1 OPERATION
1.1 Operation precautions
•Read the safety precautions carefully before installing, and
must be obeyed.
WARNING
Means improper handling may lead to severe injury.
CAUTION
Means improper handling may lead to personal injury.
•This manual uses the following icons:
Prohibit Follow the guide lines
Please entrust the distributor or professionals to install the unit.
Before cleaning or maintenance, please cut o󰀨 the power, and
prohibit to use water for washing, to prevent electrical shock.

02
Do not operate by wet hand, to prevent electrical shock.
Do not use pesticide, disinfectant and ammability spray
materials to spray directly, otherwise will cause re or
deformation.
Do not peel o󰀨 the button and the cover by hand, to prevent
electrical shock.
1.2 Operation conditions
Voltage input DC 5V
Ambient temperature range
(Stable operating environment) -10~43°C
Ambient humidity range ≤ RH90%
1.3 Main functions
1. Connected to IDU main control board via 5-core shielded
cable;
2. Setting IDU operating status by tapping touch keys;
3. LED display.

0403
1.4 User interface
On/Off Button
Mode Button
Backlight Button
Fan Speed
Button
Temp. Setting
Button
Cooling Heating Auto
Automatic Fan Speed
Dry
Display Area Of the
Wired Controller
Remote Signal
Receiving Area
Temperature
Fan Speed
Running Indicator

04
1.5 Instructions for use
1.5.1 Basic setting
2345
1
Cooling Heating AutoDry
1
3
2
4
5
Tap Mode button
The operating mode changes in the following
order:
Adjust temperature
Temperature range 17°C~30°C
Tap Fan Speed button
Seven fan speeds and Auto available.
Tap On/O󰀨 button
To start the unit and send all the congured
parameters.
Tap Backlight button
Backlight is on by default. Tap Backlight
button to turn it o󰀨.

0605
1.6 Further details
1.6.1 Supplementary instructions
•Fan Speed button
Fan speed cannot be set in Dry/Auto mode (Auto displayed).
•Backlight mode:
1) Steady On: means backlight is normally on.
Tapping to start the unit can enter the backlight steady
on mode.
If backlight is o󰀨, tapping can switch to steady on mode.
2) Auto O󰀨: means backlight is automatically o󰀨 after 4s.
If backlight is o󰀨, tapping any button (except backlight and
On/O󰀨) can switch to Auto O󰀨 mode.
1.6.2 Remote control receiving function
• Applies to specic models only.
CAUTION
Do not peel o󰀨 the buttons and liquid crystal cover, to
prevent electric shock!

06
2 INSTALLATION
2.1 Safety precautions
•Read the safety precautions carefully before installing the
unit.
•Stated below are important safety issues that must be
obeyed.
WARNING
•Please entrust the distributor or professionals to
install the unit, do not install the unit by the user.
•Do not uninstall the unit randomly.
•The wiring should adapt to the wired controller
current.
• The specied cables shall be applied in the wiring.
No external force may be applied to the terminal.
•The circuit of wire controller is low voltage circuit,
do not contact to the high voltage circuit, and can
not be arranged in the same wiring pipe with the
high circuit, the distance between the wiring pipes
should at least more than 300~500mm.

0807
• Do not connect transition or extended connection in the
middle of the wirings of the wire controller.
2.2 Installation accessory
• Please conrm that all the following parts have been
supplied.
No. Name Qty Remarks
1 Wire controller 1 Used to control the IDU main unit.
2 M4×20 Philips head screw 2 Used to install the wired controller onto the
wall.
3Installation and operation
manual 1Used to guide the operation and installation of wired controller.
4 Plastic bolt 2 Used to install the wired controller onto the
wall.
5 Connection cable set 1 Used to connect the IDU main control
board and the wired controller.

08
• Please install the following accessories in the led.
No. Name Qty Remarks
1 Shielded 5-core cable 1 RVVP-0.5 mm2×5, embedded into the wall
2Wiring tubes (insulation
suite) 1Embedded into the wall; maximum wiring length: 15 m
3 Big Phillips screwdriver 1 Used to install cross recessed head screws
4 Small slotted screwdriver 1 Used to remove the bottom cover of
wired controller
2.3 Installation dimensions
Before installation, refer to the mounting dimensions and the
size of product below (unit: mm).
75 15
102

1009
60
4130
2.4 Installation method
2.4.1 Non-wall-mounted
1. Wiring requirements
• The two ends of the connection cable set are di󰀨erent. That
with the larger 5-core plug is dened as terminal A, while that
with the smaller 5-core plug is dened as terminal B.
Terminal B Terminal A

10
•Connect terminal A to the 5-core socket of the IDU main
control board (See the gure below).
2. Insert a slotted-head screwdriver into the bottom slot of
the wired controller, and rotate in the direction indicated to
remove the rear cover of the wired controller.
Supplied connection cable set
of IDU main control board IDU Main control board
Terminal A
Screwdriver
rotation direction
Slotted
screwdriver

1211
3. Take terminal B out of the FCU electric control box and
pass it through the wiring hole in the rear cover of the wired
controller. Connect terminal B to the 5-core socket on the
PCB of wired controller. Then, restore the rear cover of wired
controller and install the wired controller into the FCU electric
control box with the display panel face-up, as shown below.
Terminal B
Rear cover of
wired controller Wired Controller
CAUTION
The wired controller can be installed on the left or
right side of FCU, depending on the circumstances.

12
2.4.2. Wall-mounted
1. Wiring requirements
•Cut the connection cable set in the middle (unsheathed
place). The section that includes terminal A is section A,
while the section that includes terminal B is section B.
•Connect terminal A to the 5-core socket of the IDU main
control board (See the gure below).
A
B
D
E
C
Section A
5-core shielded cable embedded
into the wall
Supplied connection cable set of IDU main control board
IDU Main
control board
•Connect the cut end of section A (the end opposite to terminal
A) to the 5-core shielded cable embedded in wall reliably, as
shown in the above gure.
•Connect the cut end of section B (the end opposite to
terminal B) to the 5-core shielded cable embedded in wall
reliably, as shown in the gure below.

1413
Section B
5-core shielded cable
embedded in the wall
A
B
D
E
C
• Make sure that the ve wiring terminals of the wired controller
(A/B/C/D/E) correspond to those of the connection cable set
(accessory) one by one.
•The shielded layer of 5-core shielded cable must be grounded.
•The longest wiring length of the system is 15 m.
2. Insert a slotted-head screwdriver into the bottom slot of the
wired controller and rotate in the direction indicated to remove
the rear cover of the wired controller, as shown in the gure
below.
Screwdriver
rotation direction
Slotted
screwdriver

14
3. Pass section B of the connection cable set through the wiring
hole in the rear cover of the wired controller, and x the rear
cover of wired controller on the wall using four plastic studs
and the Philips head screws, as shown in the gure below.
4. Connect terminal B to the 5-core socket in the PCB of the IDU
main control board, as shown in the gure below.
CAUTION
After the terminal is properly connected, put the
excess cable back to the hole on the wall (instead of
leave it in the wired controller).

1615
5. Knock the front cover of wired controller into the rear cover
with the bottom buckles aligned rst, as shown in the gure
below.

16
CAUTION
During installation, reserve a suitable length of the
connecting cable for the wired controller so that
the wired controller can be taken down in case of
maintenance.
2.5 Schematic drawing of installation
Wiring with IDU:
IDU electric control box
IDU electric
control board
5-core shielded
cable
Back of
the wired
controller