Wiring Of Main Power Supply And Equipment Capacity - Mitsubishi Electric City Multi PAC-LV11M-J Installation Manual

2.3.4. Electrical work
2.3.4.1. Caution
(1) Follow local regulations and ordinances for technical
standards related to electrical equipment, wiring, and
specifications of each electric power company.
(2) Wiring for control (hereinafter referred to as transmission line)
must be situated at least 5 cm from the power source wiring
so that it is not influenced by electrical noise. (Do not insert
transmission line and power source wire in the same conduit.)
(3) Be sure to provide designated grounded work to outdoor unit.
(4) Never connect the main power source to the terminal block of
a transmission line. If connected, electrical parts will be burnt
out.
(5) Use a 2-core shield cable for connecting a transmission line to
TB5 of the connection kit. If transmission of different systems
are wired with the same multiplecore cable, which can result
in poor transmission and receipt and can cause incorrect
operation.
(6) The system will not operate if connected improperly.
TB2 : Terminal block for power supply
TB : Terminal block for transmission line to indoor unit
TB5 : Terminal block for transmission line to outdoor unit
(7) Before turning the indoor unit and the connection kit on,
be sure to set the switches.
(8) To turn the power on, turn on the indoor unit, connection
kit, then the outdoor unit, in that order.
(9) For identification purposes, list the indoor unit model names in
the nameplate on the control box of the connection kit.
(10) Provide grounding for the indoor unit and the connection kit
separately.
(11) Secure the connection kit wires in place with the Cable bands
(Refer to Section 2.3.4.4.) to protect against external forces.
(12) Secure the connection kit wires in place with the Bands (Refer
to Section 2.3.4.4.) to prevent fingers from coming in contact
with the inside of the connection kit from the wire outlet.
2.3.4.2. Connecting the connection kit, indoor and outdoor unit transmission cables
• Connect the outdoor unit (TB3) to the connection kit (TB5). (Non-polarized 2-wire) The "S" terminal on the connection kit (TB5) is
a shielding wire connection. For connecting cable specifications, refer to the outdoor unit installation manual.
• Connect the indoor unit (TB) to the connection kit (TB). For connecting cable specifications, refer to the indoor unit installation
manual.
Permissible Length
1 "Indoor unit - connection kit"
Maximum transmission cable length : ℓ1 and ℓ2, ℓ3 ≤ 10 m (2-Core 1.0 mm
2 "Outdoor unit - connection kit" + "connection kit - connection kit"
Maximum transmission cable length : (L

2.3.4.3. Wiring of main power supply and equipment capacity

Thickness of wire for main power supply and on/off capacities
Model
Main cable
Connection kit 1.5
+ L ) or (L + L
1 2 1
Connection kit
Minimum wire thickness (mm
Branch Ground
1.5
Outdoor unit
(51)
TB3
M1 M2 S
L
1
2
)
) or (L + L ) ≤ 200 m
3 2 3
2
) Breaker for wiring (NFB)
1.5 15 A
Connection kit Connection kit
(01) (02)
TB5 TB TB5 TB
M1 M2 S S1 S2S3 M1 M2 S S1 S2S3
L
2
S1 S2S3 S1 S2S3
TB TB
Indoor unit Indoor unit
Connection kit
(03 )
TB5
TB
M1 M2 S S1 S2S3
S1 S2S3
TB
Indoor unit
Breaker for current leakage
15 A
11