INSTALLATION MANUAL
To Personnel Charged in Installation (Electric) Work and Service
Remote sensor
MODEL : TCB-TC21LE
Accessory parts
Part Name Q’ty
Remote sensor
(200mm-cable
attached)
Small screw
M4 x 25
Wood screw
1
2
2
Part Name Q’ty
Spacer
Wire joint
Cable clamper
Installation Manual
Requirement to install the remote sensor
Installation place
• Install the remote sensor at a position with height 1 to
1.5m from the floor, where the average temperature in
the room can be felt.
• Do not install the remote sensor at a place exposed to
the direct sunlight or direct outside air, such as a side of
window, etc.
• Do not install the remote sensor at a place behind
something or rear side of something, where air flow is
poor in the room.
• Do not install the remote controller near the freezing
box or refrigerator because water proof or drop-proof is
not applied to this remote controller.
• Be sure to set the remote sensor vertically on the wall
surface, etc.
How to install the remote sensor
NOTE 1 : Avoid to twist the remote sensor cable with the
NOTE 2 : Install the remote sensor apart from the
NOTE 3 : When noise is induced to the power source of
• In case of using the remote sensor as a concealed type
Remote sensor
body
1. Inserting a minus screwdriver, etc. into the groove at
2. Using the attached M4 screws (2 pcs.), fix the rear
power supply cable, etc. or to store them in the
same metal pipe, otherwise it causes a
malfunction.
generation source of noise.
the indoor unit, some measures such as
mounting the noise filter is necessary.
Rear case
Spacer
Small screws
M4 x 25 (2 pcs.)
WallWall
the lower side of the remote sensor body, force open
the rear case to remove it.
case of the remote sensor. Before installation, press to
open the screw hole with a screwdriver, etc.
Fix it with the spacer, but not so strongly. If the remote
sensor does not fit closely to the wall, adjust it by
cutting off the spacer.
2
3. Connect the remote sensor cable (2 cores) to the
terminal numbers of the indoor unit.
2
(Applying AC 220/230/240V breaks the unit.)
4. Install the remote sensor body by matching to hooks
on the rear case and putting into the hooks.
1
1
How to perform cab ling of the remote sensor
In case of using the remote sensor as a concealed type
• Connection diagram
Approx. 200mm
Terminal block
for remote
controller cable
in indoor unit
W : White
B : Black
A
B
Remote sensor cable
(Procured locally)
Connecting
section
W
B
Cable from
remote sensor body
Remote
sensor
• Non polarity, 2 core cable is used..
• Use 0.5mm² to 2 mm² cable.
Remote sensor cable
Attached wire joint
(White, 2 pcs.)
Cable from
remote sensor body
1) Peel the sheath of the cable to be
connected by approx. 14mm.
2) Twist two cables and pressure-connect
them using a wire joint.
3) When an exclusive pressure-connecting
tool is not used or soldering connection
is used, apply insulation process with an
insulation tape.
Wire joint, CE-1
(Nichiatsu)
Requirement for using the remote sensor
together with the remote controller
• How to install
For the above control, install the remote sensor in the
following procedure.
1. Set the remote controller as the master remote
controller.
2. Do not change the remote sensor switch in the
master remote controller for correct temperature
control by remote sensor.
• Basic cabling diagram
1. Connect cables without miswiring.
(Miswiring breaks the unit.)
2. In a case to operate an indoor unit from the remote
sensors and the remote controller.
Remote
sensor
Terminal block for
remote controller cable
Remote
controller
(Master)
Earth
Indoor unit
(Sold
separately)
Remote controller cable
(Procured locally)
BA
85464359427000 (EN)-
Q