Daikin KRCS01-8B User manual

Remote sensor
KRCS01-8B Installation Manual
4P587492-1

English 1
Be sure to read this manual before installation and follow the instruction.
Notes
■ Please check applicable kit model name by catalog etc..
Accessories
Check the following accessories:
Name Remote
sensor
(sensor box)
Extension
cable (2-core,
12m)
Clamp Installation
manual
Mounting
screw
(M4X16)
Shape
Quantity 1x 1x 2x 1x 2x
Mounting
Selection of mounting location
The thermistor for temperature detection is incorporate into the remote
sensor. Select the mounting location taking following cautions into account.
• Where the average temperature of an air conditioned room can be
detected.
• Where it is not exposed to the direct sunlight.
• Where it is not infl uenced by other heat sources.
• Where it is not exposed to the direct discharge air from the air conditioner.
• Where it is not exposed to the outdoor air infi ltrated into the room by
opening the door.

English 2
Mounting
Remove the cover of the sensor box.
2
1
1. Insert a fl at blade screw driver
(about 6mm width) into the sensor
box concave part (2 locations).
2. Remove the cover pushing up the
nail to the cover of the sensor box.
Cautions:
■ Do not push the nail powerfully
with a narrow fl at blade screw driver,
because you may break off the nail.
When mounting on the wall
a
b
c
d
e
f
g
a Mounting screw
b Thermal insulation material
c Knockout hole for cable
d Sensor box
e Air hole
f Released paper
g Sensor box cover
2-M4
32
42
• Break open the knockout hole in the sensor box with a nipper or a similar
tool. Pass the extension wires through the hole and fasten the wires to the
terminals with screws.
• To avoid tensile force on the terminals, pass the attached clamp through
the holes shown in the following fi gure and tighten the extension cable with
the attached clamp at the sheathed part. (The knot must come to the box
inside.)

English 3
f
a
b
c
d
e
a Fasten the terminals with care to
prevent the wires from touching each other
b Clamp (knot)
c Extension cable
d Sheathed part
e Sensor box
f Clamp hole
• Screw the sensor box securely to the wall surface with screws M4X16 (2
places). If the sensor box cannot be screwed to the wall surface, tear off the
released paper and mount it on the wall surface.
For embedded wiring
a
b
c
d
e
f
g
h
i
j
k
l
a Sensor box cover
b Mounting screw
c Sensor box
d Metal plate (for single unit
without hole), (fi eld supplied)
e Mounting frame which matches with
the switch box (fi eld supplied)
f Switch box (for single unit), (fi eld
supplied)
g Extension cable
h Through hole
i Sheathed part
j Clamp (knot)
k Sensor box
l Thermal insulation material
• Pass the extension cable through the switch box cable hole and carry out
the wiring.
• Pass the attached clamp through the clamp holes and tighten the
extension cable at the sheathed part as shown in the upper right fi gure.

English 4
• Tap M4 screw holes in the metal
plate (fi eld supplies) as shown in the
right drawing and mount the switch
box on the metal plate.
Holes to be tapped in the metal plate
on site (unit: mm)
32
21
2-M4
(120)
(70)
42
Cautions:
■ When wiring the extension cable, the air holes will not be blocked.
■ When the extension cable is longer than necessary, cut it to the appropri-
ate lenght, peel the insulation, attach the round crimp terminal for M3 (fi eld
supplied) and carry out the wiring. The lenght of insulation to be peeled off
is as shown. (Work carefully so that the connector side may not be cut.)
45 For M3
Round crimp terminal
Wiring method
Connect the extension cable connector side to the indoor unit PCB (printed
circuit board).
For connection to the indoor unit, follow the procedure shown below.
Cautions:
■ Make sure to turn off the power supply before starting the wiring work and
do not turn on until all the work is completed.
Read also the installation manual and the wiring diagram of the indoor unit
when carrying out the work.
■ When wiring the extension cable, do not pass where the extension cable
may be aff ected by the power line or noise.
■ Make sure to securely connect the connectors.
Defective connection may result in incorrect detection of room temperature
on malfunction.
■ Do not splice wires.

English 5
■ Since the connector of the thermistor for detection of inlet air temperature
diff ers depending on the indoor unit type, make sure to check the indoor unit
wiring diagram and follow it correctly.
■ Lay and clamp the extension cable inside the indoor unit switch box just
like the low voltage line (cord for remote controller).
And do not pass where the extension cable inside the indoor unit switch
box may be aff ected by the power line (cord for the indoor unit and the other
electric line).
Procedure
1) When wiring to the indoor unit PCB, remove the existing thermistor (for
detection of inlet air temperature) and then connect the extension cable.
When doing this work, make sure to check the symbol of connecting
address on the PCB whether it is correct or not referring to the wiring
diagram.
1
be
f
2
X16A
d
b
c
a
a Screwed terminal connection
b Extension cable
c Connector connection
d Indoor unit
e Indoor unit printed circuit board (PCB)
f Existing thermistor or humidity sensor
1. Remove
2. Connect

English 6
2) Lay and clamp the extension cable inside the indoor unit switch box just
like the existing thermistor.
When doing this work, keep a certain distance between the high voltage
wiring and the low voltage wiring to avoid error of sensor.
Provide protection of the existing cable for thermistor without aff ecting other
components.
3) Fit the sensor box cover into the sensor box.
Operation test after mounting
the sensor
Conduct cooling and heating operation test after the sensor is mounted and
the wiring is completed.

4P587492-1 2019.07