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INSTALLATION MANUAL
To Personnel Charged in Installation (Electric) Work and Service
Accessory parts
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
power supply cable, etc. or to store them in the
same metal pipe, otherwise it causes a
malfunction.
NOTE 2 : Install the remote sensor apart from the
generation source of noise.
NOTE 3 : When noise is induced to the power source of
the indoor unit, some measures such as
mounting the noise filter is necessary.
• In case of using the remote sensor as a concealed type
1. Inserting a minus screwdriver, etc. into the groove at
the lower side of the remote sensor body, force open
the rear case to remove it.
2. Using the attached M4 screws (2 pcs.), fix the rear
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.
3. Connect the remote sensor cable (2 cores) to the
terminal numbers of the indoor unit.
(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.
How to perform cabling of the remote sensor
In case of using the remote sensor as a concealed type
• Connection diagram
• Non polarity, 2 core cable is used..
• Use 0.5mm² to 2 mm² cable.
Attached wire joint
(White, 2 pcs.)
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.
Small screws
M4 x 25 (2 pcs.)
Remote sensor
body
Rear case
Spacer
Wall
all
Wall
1
2
2
Part Name Q’ty
2
2
1
1
Part Name Q’ty
Remote sensor
(200mm-cable
attached)
Small screw
M4 x 25
Wood screw
Spacer
Wire joint
Cable clamper
Installation Manual
Terminal block
for remote
controller cable
in indoor unit
A
B
Approx. 200mm
W : White
B : Black
W
B
Remote sensor cable
(Procured locally)
Cable from
remote sensor body
Connecting
section
Remote
sensor
Cable from
remote sensor body
Remote sensor cable
Wire joint, CE-1
(Nichiatsu)
Earth
Remote
sensor
Remote
controller
(Master)
BA
(Sold
separately)
Terminal block for
remote controller cable
Remote controller cable
(Procured locally)
Indoor unit
85464359427000 (EN)-
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
MODEL : TCB-TC21LE
TCB-TC21LE