Examples Of System Connection - Mitsubishi PWFY-P36NMU-E-BU Service Handbook

[3] Examples of system connection

1. Connecting remote controller, indoor and outdoor transmission cabls
• Connect unit TB5 and outdoor unit TB3. (Non-polarized 2-wire (shield))
The "S" on 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 controller.
2. System using MA remote controller
(1) In the case of single refrigerant system (Automatic address set-up)
• Connect the "1" and "2" on unit TB15 to a MA remote controller. (Non-polarized 2-wire)
MA Remote controller
(A) (B)
TB3
TB02
M1M2 M1M2 S
• DC 10 to 13 V between 1 and 2 (MA remote controller)
PWFY-P36NMU-E-BU
(D)
(E)
G
L2
L1
• The MA 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:
• Use wire with supplemental insulation.
• Input to TB142A, TB142B, and TB142C should not carry voltage.
• Cables from equipment connected to external input/output should have supplemental insulation.
• Use a single multiple-core cable for external input/output to allow for connection to the PG screw.
Caution:
Wire the power supply so that no tension is imparted. Otherwise disconnection, heating or fire result.
(C)
TB5 TB15
M1M2 S 1 2 S
earth cable
(shielded)
(D)
(shielding wire)
TB5 TB15
M1M2 S 1 2
PWFY-P36, P72NMU-E/E2-AU
(B)
S
2
1
S (A)
M2
(E)
DC10~13V
M1
(C)
A B
1 2
L1
(E)
(A) Outdoor unit
(B) BC controller
(C) PWFY-P36NMU-E-BU
(D) PWFY-P36, P72NMU-E/E2-AU
(E) MA remote controller
(E)
*Refer to the outdoor unit manual for the wiring other
than the wiring in the area defined with dotted lines.
(B)
2
(D)
(A)
1
S
M2
M1
DC10~13V
G (C)
L2
A B
1 2
- 20 -
(A) Non-polarized
(B) TB15 (MA remote controller cables)
(C) MA remote Controller
(D) TB5 (Transmission cables)
(E) TB2 (Power supply wiring)