Mitsubishi Electric CITY MULTI PKFY-P06 NAMU-E Manuel D'installation page 14

6. Electrical work
I PKFY-P18/P24/P30NFMU-E
1
C A B
D
K
3
Fig. 6-3
A B
1
TB3 TB5 TB15
M1 M2 M1 M2 S 1 2
D E
C
A B
2
M1 M2 M1 M2 S
TB3 TB5
D E
C
Fig. 6-4
G
*1
H
I
*3
L1
Fig. 6-5
14
2
E
O
L
K
B B
TB5 TB5
*
1
M1 M2 S M1 M2 S
1 2 1 2
1 2 1 2
* 2 * 2
E E
C C
B B
* 1
M1 M2 S M1 M2 S
TB5 TB5
C C
J J J
L2
K K L4
J J
r
K
L
L3
K K
I PKFY-P18/P24/P30NFMU-E (Fig. 6-3)
1. Remove the right-side panel.
F
2. Install each wire into the unit.
3. Remove the tapping screw (1), and then remove the terminal block cover by slid-
G
ing it to the right and up.
4. Connect each wire properly to the terminal block.
• In consideration of future servicing, please leave some leeway for the wiring
length.
H
5. Put all the parts back the way they were.
6. Use a clamp from the bottom of the electric parts box to fasten each wire.
s s s s s Fix power source wiring to control box using buffer bushing for tensile force.
I
(PG connection or the like.)
J
A Terminal block cover
B Securing screw on the terminal block cover
C Address board
D Printed circuit board cover
E Right side panel
F Terminal block for MA remote controller
G Terminal block for transmission line and M-NET remote controller
H Terminal block for power supply
I Power supply wiring & connection wiring
J Cable clamp
M
N
K Conduit plate
L Lock nut (Purchased locally)
M Connector (Purchased locally)
N Conduit (Purchased locally)
O Bush (Purchased locally)
Warning:
Wiring should be done so that the power lines are not subject to tension. Oth-
erwise, heat may be generated or fire may occur.
6.2. Connecting remote controller, indoor and outdoor
transmission cables (Fig. 6-4)
• 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.
∗1 Because the terminal block TB5 for the PKFY-P06/P08NAMU-E model does not
have the "S" terminal, connect all of the wiring directly.
• Install a remote controller following the manual supplied with the remote controller.
• Connect the remote controller's transmission cable within 33 ft. (10 m) using a 0.75 mm
(AWG18) core cable. If the distance is more than 33 ft. (10 m), use a 1.25 mm
junction cable.
1 MA Remote controller
• Connect the "1" and "2" on indoor unit TB15 to a MA remote controller or connect
the connector for MA remote controller. (Non-polarized 2-wire)
• DC 9 to 13 V between 1 and 2 (MA remote controller)
2 M-NET Remote controller
• Connect the "M1" and "M2" on indoor unit TB5 to a M-NET remote controller. (Non-
polarized 2-wire)
• DC 24 to 30 V between M1 and M2 (M-NET remote controller)
A Terminal block for outdoor unit
B Terminal block for indoor unit
C Remote controller
D Transmission cables (Purchased locally)
E Remote control cables (Purchased locally)
∗2 Only the PKFY-P06/P08NAMU-E model has a remote control transmission cable
attached to the unit for relay connections.
Constraints on transmission cable (Fig. 6-5)
Longest wiring length (L
Length between indoor unit and remote controller (R): within 33 ft. (10 m)
G Outdoor unit
H Ground
I BC controller
J Indoor unit
K M-NET Remote controller
L Non-polarized 2-wire
*2
Note:
*1 Put the transmission cable earth via the outdoor unit's earth terminal
the ground.
*2 If the remote controller cable exceeds 33 ft. (10 m), use a 1.25 mm
diameter cable over the exceeded portion, and add that exceeded portion
to within 656 ft. (200 m).
*3 The BC controller is required only for simultaneous cooling and heating
series R2.
+L +L or L +L or L +L +L ): less than 656 ft. (200 m)
1 2 4 1 3 2 3 4
2
2
(AWG16)
to
2
(AWG16)