Toshiba Carrier MMD-UP0241HP-UL Manual De Instalación página 21

Wiring between indoor unit and outdoor units
■
NOTE
An outdoor unit connected with control wiring between indoor and outdoor units wire becomes automatically
the header unit.
Wiring example
▼
Outdoor Power supply
Circuit breaker
Header outdoor unit
Ground
L1 L2 L3 N
terminal
Control wiring between indoor and outdoor units
Control wiring between indoor units
Indoor unit Indoor unit
Ground Ground
L1 L2
Disconnect Disconnect
switch per switch per
NEC NEC
A B
Remote control
Indoor
power
supply
Circuit
208/
breaker
230-1-60
39-EN
Outdoor Power supply
Circuit breaker
Follower outdoor unit
Ground
L1 L2 L3 N
terminal
Control wiring between outdoor units
Indoor unit Indoor unit
Ground Ground
L1 L2 L1 L2 L1 L2
Disconnect Disconnect
switch per switch per
NEC NEC
A B A B
Remote control Remote control
Group control
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. 3.9" (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 2 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.)
Slide the electrical control box cover to install it. Do not pinch the wire
too strong, and reduce the load on the wire. Make the gap as small as
possible when installing the cover.
Uv(U1) Uv(U2) A B
Cord clamp
Remote controller
L N
wiring
Earth screw
System interconnection
wire
(L1) (L2)
Earth wire
System interconnection wire
Remote controller wiring
Strip off approx. 0.4" (9 mm) the wire to be connected.
Wiring diagram
Terminal block for remote
Terminal block
controller wiring of indoor unit
A
B
Remote controller wire
(Locally procured)
– 20 –
Electrical control
box cover
Side D (Space: 0.3" (8.5 mm))
Side C (Space: 0.2" (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.
Wire type Specification
Cabtyre cable 3-core stranded wire AWG14
Cabtyre cable 4-core stranded wire AWG16
See the figure on the left for
system interconnection wires to
the terminal block.
System interconnection wire
Remote
A
controller
B
unit
Loosen screw B.
Remove screw A.
Cable clamping position
Side D
Side C
EN
FR
ES
40-EN