Power Supply Wiring; Connecting Remote Controller, Indoor And Outdoor Transmission Cables; Connecting Electrical Connections - Mitsubishi Electric CITY MULTI PEFY-P40VMH-E Manuel D'installation

<Table 1>
System configuration
Transmission cable length
Facility example Residence or independent store
(for noise judgment) without noise
VCTF, VCTFK, CVV, CVS, VVR,
Types of transmission
VVF, VCT or shielding wire
cables
CVVS or CPEVS
Length
2. Remote controller cables
Types of cables 2-core cable (unshielded)
Cable diameter 0.3 to 1.25 mm
Length Less than 200 m

9.1. Power supply wiring

• Power supply cords of appliances shall not be lighter than design 245 IEC 57
or 227 IEC 57.
• A switch with at least 3 mm contact separation in each pole shall be provided
by the Air conditioner installation.
Power cable size: more than 1.5 mm
[Fig. 9.1.1] (P. 4)
A Switch 16 A
B Overcurrent protection 16 A
C Indoor unit
D Total operating current be less than 16 A
E Pull box
[Selecting non-fuse breaker (NF) or earth leakage breaker (NV)]
To select NF or NV instead of a combination of Class B fuse with switch, use the
following:
• In the case of Class B fuse rated 15 A or 20 A,
NF model name (MITSUBISHI): NF30-CS (15 A) (20 A)
NV model name (MITSUBISHI): NV30-CA (15 A) (20 A)
Use an earth leakage breaker with a sensitivity of less than 30 mA 0.1 s.
Caution:
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 mal-
function or fire.
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 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. 9.2.3] (P.4) MA Remote controller
[Fig. 9.2.4] (P.4) M-NET Remote controller
A Non-polarized
C Remote Controller
10
For a single-refrigerant system
Less than 120 m
Building, clinic, hospital or communications
station without noise supposedly generated
from inverter equipment, private power gen-
erator, high-frequency medical equipment,
radio-used communications equipment and
so on
Less than 120 m
MA remote controller
2
2
2 junction cable.
B Upper level (TB15)
D Lower level (TB5)
More than 120 m
Shielding wire CVVS or CPEVS
Non-shielding wire for up to 10 m; the same specifications as "1." Wiring
transmission cables for more than 10 m
0.3 to 1.25 mm 2
Add any portion in excess of 10 m to within the longest allowable trans-
mission cable length 200 m (Shielding portion is more than 1.25 mm
• 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.

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.
Step 1
Remove the screws holding the terminal box cover in place.
• Type 40 - 140 (2 screws)
• Type 200 · 250 (4 screws)
[Fig. 9.3.1] (P. 4)
Fig.1
Fig.2
A Screws
C Control box cover
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
• 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.
[Fig. 9.3.2] (P. 4)
A To prevent external tensile force from applying to the wiring connection section
of power source terminal block use buffer bushing like PG connection or the
like.
B Power source wiring
D Use ordinary bushing
For a multi-refrigerant system
Regardless of length
All facilities
Less than 200 m
M-NET remote controller
Fig.1
Fig.2
B Terminal box cover
D Control box
C Tensile force
E Transmission wiring
2 )