Toshiba R410A Installation Manual page 25

Wire connection
REQUIREMENT
Connect the wires matching the terminal numbers. Incorrect connection causes a trouble.
Pass the wires through the bushing of wire connection holes of the indoor unit.
Keep a margin (Approx. 100 mm) on a wire to hang down the electrical control box at servicing or other
purpose.
The low-voltage circuit is provided for the remote controller. (Do not connect the high-voltage circuit)
Before performing wiring work in the electrical
control box, remove the cover of the box (fixed
with 6 screws).
Remove screw A, and loosen screw B.
Pull up the electrical control box cover and then
open it forward.
Tighten the screws of the terminal block firmly,
and fix the wires with the cord clamps attached
to the electrical control box. (Do not apply
tension to the connecting section of the terminal
block.)
Mount the cover of the electrical control box
without pinching wires (fixed with 6 screws).
Using the attached seal material, seal the wire
connecting port.
Side D (Space: 8.5 mm) Side C (Space: 4 mm)
Select side C or D for the power cable clamping
position referring to the following table according to the
cable type and diameter.
* Cable clamp can be attached on either right or left
side.
When twin system are connected, clamp two cables
with one cable clamp.
Cable clamping
Wire type Specifi cation
position
3-core stranded
Cabtyre cable Side D
wire 2.5 mm²
4-core stranded
Cabtyre cable Side C
wire 1.5 mm²
※ 3 and 4 terminals is Flow Selector Unit wiring.
47-EN
Electrical control box cover
Loosen screw B
Remove screw A
When attaching the electrical
control box cover, insert this part
into the inside of the lower plate.
1(L) 2(N) 3 4
Earth screw
Power supply wires
(1(L), 2(N) terminals)
System interconnection wires
(Uv(U1), Uv(U2) terminals)
Remote controller wiring
Strip off approx. 9 mm the wire to be connected.
Wiring diagram
Terminal block for remote
controller wiring of indoor unit
A
B
Remote controller wire
(Locally procured)
R S
(L) (N)
Earth wire
Power supply wire
Lower plate
Uv(U1) Uv(U2) A B
Cord clamp
Remote controller wires (A, B terminals)
– 24 –
Terminal block
Remote
A
controller
B
unit
See the figure on the left for
system interconnection wires
and remote controller wires to
the terminal block.
System interconnection wire
and remote controller wires
Cut
After connecting the wire, cut the attached seal material
as the drawing, and stick on the wire connecting port.
Attached seal material
Wire connecting port
EN
EN
EN
EN
48-EN