Connecting Remote Controller, Indoor And Outdoor Transmission Cables; Connecting Electrical Connections; External I/O Specifications - Mitsubishi Electric CITY MULTI PEFY-P-VMHS-E Manuel D'installation

• Backup operation
Even when the electrical work has not been completed, the fan and the drain
pump can be operated by connecting the jumper (SWE) on the control board
to the ON-side and energizing the terminal block.
SWE SWE
OFF ON OFF ON
Reconnect the SWE on the control board to the OFF-side upon completion of
all work.
9.2. Connecting remote controller, indoor
and outdoor transmission cables
(Remote contoroller is optionally available.)
• 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 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. 9.2.1] (P.4) MA Remote controller
[Fig. 9.2.2] (P.4) M-NET Remote controller
A Terminal block for indoor transmission cable
B Terminal block for outdoor transmission cable
C Remote controller
• DC 10 to 13 V between 1 and 2 (MA remote controller)
• DC 24 to 30 V between M1 and M2 (M-NET remote controller)
[Fig. 9.2.3] (P.4) MA Remote controller
[Fig. 9.2.4] (P.4) M-NET Remote controller
A Non-polarized
C Remote Controller
E Clamp
• Wind the transmission and remote controller wires around the clamp once to
keep them from being pulled out.
• The MA remote controller and the M-NET remote controller cannot be used
at the same time or interchangeably.
Note:
Ensure that the wiring is not pinched when fitting the terminal box cover.
Pinching the wiring may cut it.
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 transmis-
sion terminal 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 con-
nections, and attach the cover onto the control box in the reverse order re-
moval.
Caution:
Wire the power supply so that no tension is imparted. Otherwise discon-
nection, heating or fire result.
2
2
junction cable.
B TB15
D TB5

9.3. Connecting electrical connections

Verify that the model name on the operating instructions on the cover of the
control box is the same as the model name on the nameplate.
1. Remove the 2 screws holding the terminal box cover in place.
[Fig. 9.3.1] (P. 4)
A Screw holding cover (2 pcs)
Note:
Ensure that the wiring is not pinched when fitting the terminal box cover.
Pinching the wiring may cut it.
Caution:
Install wiring so that it is not tight and under tension. Wiring under tension
may break, or overheat and burn.
2. Open knockout holes
(Recommend to use a screwdriver or the like for this work.)
[Fig. 9.3.2] (P.4)
A Control box
C Remove
3. 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.
4. Connect the power source, Earth, transmission and remote controller wiring.
The dismounting of the terminal bed box is not needed.
[Fig. 9.3.3] (P.4)
A Use PG bushing to keep the weight of the cable and external force from being
applied to the power supply terminal connector. Use a cable tie to secure the
cable.
Wind the wire around the cable strap once to keep it from being pulled out.
B Power source wiring
D Use ordinary bushing
F Terminal bed for indoor transmission
G Terminal bed for remote controller
I Transmission line to the M-NET Remote controller
J Transmission line to the MA Remote controller
5. 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.
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.
Caution:
Wire the power supply so that no tension is imparted. Otherwise disconnec-
tion, heating or fire result.

9.4. 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 Cover
B Knockout hole
C Tensile force
E Power source terminal bed
H To 1-phase power source
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