Carrier 40VU S-8S-TST Installation Manual page 16

1. Remove the cover of the electrical control box by taking off the mounting screws (2 positions) and pushing the
hooking section. (The cover of the electrical control box remains hanged to the hinge.)
2. Connect the power supply wire and remote controller wire to the terminal block of the electrical control box.
3. Tighten the screws of the terminal block, and fix the wires with cord clamp attached to the electrical control box.
(Do not apply tension to the connecting section of the terminal block.)
4. Using the attached heat insulation material, seal the pipe connecting port. Otherwise, dewing may be caused.
5. Mount the cover of the electrical control box without pinching wires.
(Mount the cover after wiring on the ceiling panel.)
Side D (Space: 8.5 mm)
Side C (Space: 4 mm)
* Cable clamp can be attached on left side.
Cable clamping
Wire type Specification
position
Cabtyre 3-core stranded
Side D
cable wire 2.5 mm²
Cabtyre 4-core stranded
Side C
cable wire 1.5 mm²
Power supply terminal block
L N
Cord clamp
„ Remote controller wiring
As the remote controller wire has non-polarity, there is no problem if connections to indoor unit terminal blocks A
and B are reversed.
q Wiring diagram
Terminal block for
remote controller
wiring of indoor unit
Remote controller wire
(Field supply)
29-EN
Screws in 2 positions
Hinge
Louver connector
(CN510: White)
q Heat insulation to wiring
connecting port
Adhered surface
Indoor / Outdoor
inter-unit wire /
Notched section
Remote controller
terminal block
R S
Uv(U1) Uv(U2) A B
(L) (N)
Earth wire
Power supply wire
Terminal block
Remote
controller unit
– 15 –
„ Wiring between indoor and outdoor units
NOTE
y An outdoor unit that is interconnected to the indoor units automatically becomes the header unit.
q Wiring example
Outdoor Power supply
380V ~, 50 Hz
Circuit breaker
Outdoor unit
Header outdoor
Earth
terminal
S: The ground of
a shielded wire
Control wiring between indoor and outdoor units (Shield wire)
Indoor unit
Earth
Indoor power supply
220V ~, 50Hz
Remote controller
Circuit breaker,
Pull box
Power switch
„ Wiring on the ceiling panel
According to the Installation Manual of the ceiling panel, connect the connector (20P: White) of the ceiling panel to
the connector (CN510: White) on P.C. Board of the electrical control box.
Outdoor Power supply
380V ~, 50 Hz
Circuit breaker
Outdoor unit
Follower outdoor
Earth
terminal
S: The ground of a shielded wire
Control wiring between outdoor units (Shield wire)
Control wiring between indoor units (Shield wire)
Indoor unit Indoor unit
Earth Earth
Remote controller Remote controller
Pull box Pull box
Group control
Indoor unit
Earth
30-EN