Connecting Remote Controller, Indoor And Outdoor Transmission Cables; Connecting Electrical Connections; Selecting The Power Source; Setting Addresses - Mitsubishi Electric City Multi PEFY-P25-VMR-E-R Installationshandbuch

10.2. Connecting remote controller, indoor
and outdoor 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 con-
troller.
• 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 ME remote controller. (Non-
polarized 2-wire)
[Fig. 10.2.1] (P.4) MA Remote controller
[Fig. 10.2.2] (P.4) ME 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 (ME remote controller)
[Fig. 10.2.3] (P.4) MA Remote controller
[Fig. 10.2.4] (P.4) ME Remote controller
A Non-polarized
C Remote Controller
• The MA remote controller and the ME 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.
• Fix power source wiring to control box by using buffer bushing for tensile force.
(PG connection or the like.) Connect transmission wiring to transmission ter-
minal block through the knockout hole of control box using ordinary bushing.
• After wiring is complete, make sure again that there is no slack on the connec-
tions, and attach the cover onto the control box in the reverse order removal.
Caution:
Wire the power supply so that no tension is imparted. Otherwise disconnec-
tion, heating or fire result.

10.3. Connecting electrical connections

Please identify the model name of the operation manual attached on the terminal
bed box cover with that shown on the rating name plate.
1. Remove the screw (2pcs) holding the cover to dismount the cover.
[Fig. 10.3.1] (P.5)
A Screw holding cover (2pcs)
2. Open knockout holes
(Recommend to use a screwdriver or the like for this work.)
[Fig. 10.3.2] (P.5)
A Terminal bed box
C Remove
3. Fix power source wiring to terminal bed box by using buffer bushing for tensile
force. (PG connection or the like.) Connect transmission wiring to transmission
terminal bed through the knockout hole of terminal bed box using ordinary
bushing.
[Fig. 10.3.3] (P.5)
E To prevent external tensile force from applying to the wiring connection section of
power source terminal bed use buffer bushing like PG connection or the like.
F Power source wiring
H Use ordinary bushing
4. Connect the power source, earth, transmission and remote controller wiring.
The dismounting of the terminal bed box is not needed.
[Fig. 10.3.4] (P.5)
J Power source terminal bed
L To 1-phase power source
N Terminal bed for outdoor transmission line (TB3)
O Transmission line to the remote controller, terminal bed for indoor unit and BC
controller
B Upper level (TB15)
D Lower level (TB5)
B Cover
B Knockout hole
D Knockout hole
G Tensile force
I Transmission wiring
K Terminal bed for indoor transmission
M Transmission line DC 30 V
[Shield wire connection]
[Fig. 10.3.5] (P.5)
A Terminal bed
C Shield wire
D Two shield wires may be connected together at the shield relay terminal bed
E One shield wire is connected with another shield wire. (Terminal connection)
F Insulation tape (for the earthing of shield and the prevention of contact to trans-
mission terminal)
5. After wiring is complete, make sure again that there is no slack on the connec-
tions, and attach the cover onto the terminal bed box in the reverse order of
removal.
Notes:
• Do not pinch the cables or wires when attaching the terminal bed box
cover. Doing so may cause a risk of disconnection.
• When accommodating the terminal bed box, make sure that the connec-
tors on the box side are not removed. If removed, it cannot operate nor-
mally.

10.4. Selecting the power source

It is 220V, 230V setting at factory shipment.
So, it is necessary to change the setting in other power supply districts.
Please remove the connector of motor from the control box, and insert the attach-
ment connector according to each power supply between those.
The connector colors are as follows.
Power source 220V
Color White
[Fig. 10.4.1] (P.5)
A Terminal bed box connector (White)
B Motor connector (White)
C Attachment connector (Blue) (Accessory)

10.5. Setting addresses

(Be sure to operate with the main power turned OFF.)
[Fig. 10.5.1] (P.5)
<Address board>
• There are two types of rotary switch setting available: setting addresses 1 to 9
and over 10, and setting branch numbers.
1 How to set addresses
Example: If Address is "3", remain SW12 (for over 10) at "0", and match
SW11(for 1 to 9) with "3".
2 How to set branch numbers SW14 (Series R2 only)
Match the indoor unit's refrigerant pipe with the BC controller's end connec-
tion number. Remain other than R2 at "0".
• The rotary switches are all set to "0" when shipped from the factory. These
switches can be used to set unit addresses and branch numbers at will.
• The determination of indoor unit addresses varies with the system at site. Set
them referring to technical data.
10.6. Sensing room temperature with the
built-in sensor in a remote controller
If you want to sense room temperature with the built-in sensor in a remote control-
ler, set SW1-1 on the control board to "ON".

10.7. External I/O specifications

Caution:
1. Wiring should be covered by insulation tube with supplementary insula-
tion.
2. Use relays or switches with IEC or equivalent standard.
3. The electric strength between accessible parts and control circuit should
have 2750 V or more.
B Round terminal
230V 240V
Blue
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