Mitsubishi Electric PAR-F27MEA-US Manuel D'installation page 2

3 How to wire transmission line
1. When grouping by same refrigerant system
Outdoor unit
Indoor unit
051
TB7 TB3 TB5
Remote
Controller
1 Wiring from the remote controller
• Connect to TB5 (terminal block for indoor/outdoor unit transmission line) on the indoor unit.
• The terminal block has no polarity. Connect to the symbols "A" and "B" on the terminal block.
2 Operating in a group (Groups 01, 02, and 03 above)
• Match the remote controller address with the master unit address of the indoor units you want to operate as a group.
The master unit address indicates the lowest address in the group.
Set the remote controller address to master unit address No. + 100.
3 The master remote controller and one subordinate remote controller, a total of two, can be connected to each indoor unit or a group made up
of indoor units.
• Connect them as described in 1 above.
• Be sure to set the master and subordinate remote controller addresses.
Set the subordinate remote controller to indoor units master unit address + 150.
- Remote controllers cannot be wired together. Only one wire can be connected to the remote
CAUTION
controller terminal block.
- An ME remote controller and MA remote controller cannot be connected in the same group.
4 You have just completed all the settings for same refrigerant system.
2. When grouping by different refrigerant systems
Outdoor unit
051
TB7 TB3
Outdoor unit
052
TB7 TB3
1 Wiring from the remote controller (Same as for same refrigerant system)
2 Operating in a group
• Match the remote controller address with the master unit address of the indoor units you want to operate in a group.
The master unit address indicates the lowest address in the group.
Set the remote controller address to master unit address No. + 100.
3 A master remote controller and one subordinate remote controller, a total of two, can be connected to each indoor unit or to a group made up
of indoor units. (This is the same as for same refrigerant system)
4 Set a group of units using each remote controller. (For detailed information, see section 6 Group registration .)
However, when used in combination with a MELANS system controller, group setting are performed at the system controller and do not have
to be performed at the remote controller.
5 You have just completed all the settings for different refrigerant systems.
NOTE: When grouping by different refrigerant systems, interchange power supply selection connectors (CN41) and (CN40) on the control
PC board of one outdoor unit only.
group 01 group 02
Indoor unit
001 002
TB15 TB5 TB15
101 102 152
Master Subordiate
Remote Remote
Controller Controller
group 01
Indoor unit
001
TB5 TB15
101
Remote
Controller
Indoor unit
002
TB5 TB15
group 03
Indoor unit Indoor unit
003 004
TB5 TB15 TB5 TB15
103
Remote
Controller
group 02 group 03
Indoor unit Indoor unit Indoor unit
004 005
TB5 TB15 TB5 TB15
105 155
Master Remote Subordiate
Controller Remote
Controller
Indoor unit Indoor unit
003 007
TB5 TB15 TB5 TB15
103
Remote
Controller
Master
Remote
Controller
006
TB5 TB15
Subordiate
Remote
Controller
2