Connecting Remote Controller, Indoor And Outdoor Transmission Cables; Connecting Electrical Connections - Mitsubishi Electric CITY MULTI PFFY-P20VCM-E Installation Manual

*3 Current sensitivity is calculated using the following formula.
G1 = (V2  Quantity of Type1) + (V3  Wire length [km])
G1 Current sensitivity
30 or less 30 mA 0.1 sec or less
100 or less 100 mA 0.1 sec or less
Warning:
• Be sure to use specified wires for connections and ensure no external force is imparted to terminal connections. If connections are not fixed firmly, heating or
fire may result.
• Be sure to use the appropriate type of overcurrent protection switch. Note that generated overcurrent may include some amount of direct current.
Caution:
• Some installation sites may require attachment of an earth leakage breaker for the inverter. If no earth leakage breaker is installed, there is a danger of electric
shock.
• Do not use anything other than the correct capacity breaker and fuse. Using fuse, wire or copper wire with too large capacity may cause a risk of malfunction
or fire.
Notes:
• This device is intended for the connection to a power supply system with a maximum permissible system impedance (Refer to IEC61000-3-3.) at the interface
point (power service box) of the user's supply.
• The user must ensure that this device is connected only to a power supply system which fulfils the requirement above.
If necessary, the user can ask the public power supply company for the system impedance at the interface point.
8.2. Connecting remote controller, indoor and out-
door transmission cables
• Connect indoor unit TB5 and outdoor unit TB3. (Non-polarized 2-wire)
The "S" on indoor unit TB5 is a shielding wire connection. For specifications
about the connecting cables, refer to the outdoor unit installation manual.
• Install a remote controller following the manual supplied with the remote control-
ler.
• Connect the "1" and "2" on indoor unit TB15 to a MA remote controller. (Non-
polarized 2-wire)
• Connect the "M1" and "M2" on indoor unit TB5 to a M-NET remote controller.
(Non-polarized 2-wire)
• Connect the remote controller's transmission cable within 10 m using a 0.75 mm
core cable. If the distance is more than 10 m, use a 1.25 mm
[Fig. 8.2.1] (P.5) MA Remote controller
[Fig. 8.2.2] (P.5) M-NET Remote controller
A Terminal block for indoor transmission cable
B Terminal block for outdoor transmission cable
C Remote controller
• DC 9 to 13 V between 1 and 2 (MA remote controller)
• DC 24 to 30 V between M1 and M2 (M-NET remote controller)
[Fig. 8.2.3] (P.5) MA Remote controller
[Fig. 8.2.4] (P.5) M-NET Remote controller
A Non-polarized
C Remote Controller
• The MA remote controller and the M-NET remote controller cannot be used at
the same time or interchangeably.
Caution:
Install wiring so that it is not tight and under tension. Wiring under tension
may break, or overheat and burn.
12
Wire thickness
2
1.5 mm
2
2.5 mm
2
4.0 mm
2
junction cable.
B TB15
D TB5
V3
48
56
66

8.3. Connecting electrical connections

Please identify the model name of the operation manual attached on the terminal
box cover with that shown on the rating name plate.
1. Remove the screws holding the cover to dismount the cover.
[Fig. 8.3.1] (P.5)
A Screw holding cover (3pcs.)
2. Open knockout holes
(Recommend to use a screwdriver or the like for this work.)
3. Fix power source wiring to terminal box by using buffer bushing for tensile
force. (PG connection or the like.) Connect transmission wiring to transmission
terminal block through the knockout hole of terminal box using ordinary bush-
ing.
2
4. Connect the power source, Earth, transmission and remote controller wiring.
The dismounting of the terminal box is not needed.
[Fig. 8.3.2] (P.5)
A Terminal bed box
C Remove
[Shield wire connection]
[Fig. 8.3.3] (P.5)
A Use a cable tie to secure the cable.
B Use PG bushing to keep the weight of the cable and external force from being applied
to the power supply terminal connector.
C Power source wiring
E Power source terminal block
G Terminal block for remote controller
I Transmission line 30 VDC
J Transmission line to the remote controller, terminal block for indoor unit and BC con-
troller
5. After wiring is complete, make sure again that there is no slack on the connec-
tions, and attach the cover onto the terminal box in the reverse order of
removal.
Notes:
• Do not pinch the cables or wires when attaching the terminal box cover.
Doing so may cause a risk of disconnection.
• When accommodating the terminal box, make sure that the connectors on
the box side are not removed. If removed, it cannot operate normally.
B Cover
B Knockout hole
D Use ordinary bushing
F Terminal block for indoor transmission
H To 1-phase power source