Address Setting - Mitsubishi Electric m-MOCU-G02-050 Installation Manual

10-5-3. Connecting the cables
Ⓑ
Ⓐ
L1 L2 L3 N
Ⓐ
Ⓐ
Ⓓ
Ⓑ Ⓑ
Ⓒ
Ⓓ
Ⓔ
Ⓐ
Ⓔ
Ⓒ
・Connect the cables respectively to the power supply terminal block and the transmission terminal block.
Erroneous connection does not allow the system to operate.
・Never connect the power cable to the transmission terminal block. If connected, electrical parts will be damaged.
・Transmission cables should be (5 cm (2 in) or more) apart from the power cable so that it is not influenced by
electric noise from the power cable. (Do not put the transmission cables and the power cable in the same
conduit.)
・Follow the tightening torque for each screw type as shown below. Be careful not to use excessive torque as this
could damage the screw.
Terminal block (TB1 (M6 screw)): 2.5–2.9 [N·m]
Terminal block (TB3 (M3.5 screw)): 0.82–1.0 [N·m]
・When tightening the screws, do not push the driver strongly to avoid damaging the screw.
・Make an alignment mark with a permanent marker across the screw head, washer, and terminal after tightening
the screws.
① Connect the indoor-outdoor transmission cable to TB3.
If multiple outdoor units are connected to the same refrigerant system, daisy-chain TB3 (M1, M2, earth) on the
outdoor units. The indoor-outdoor transmission cable to the indoor unit should be connected to TB3 (M1, M2,
earth) of only one of the outdoor units. Connect the shield to the earth terminal.
② Fix the cables securely in place with the cable strap below the terminal block.

10-6. Address setting

・Set the address setting switch as follows.
Outdoor unit (OC, OS)
* The outdoor units in the same refrigerant circuit are automatically designated as OC and OS. The outdoor units are designated as OC and OS
in the order of address from small to large.
VG79D920H01
Ⓒ
Ⓓ
Terminal block with loose screws
Ⓐ
Ⓒ
Ⓑ Properly installed terminal block
Ⓒ Spring washers must be parallel to the terminal block.
Ⓑ
Power cables, transmission cables
Daisy-chain (transmission cables only)
Terminal blocks (TB1, TB3)
Make an alignment mark.
Install the ring terminals back to back.
Assign sequential addresses to the outdoor units in the same refrigerant system.
Control box
Ⓐ
Ⓑ Power supply terminal block (TB1)
Ⓒ Connect the outdoor transmission cable.
Ⓓ Terminal block for indoor-outdoor transmission cable
(TB3)
Address setting method
33
Address
51 to 52