Installation procedure, Field setting – MRV Communications AE09~212FCAKA User Manual
Page 34
Field setting
Field setting the unit number
In order to realize central control of the MRV air conditioning system, its necessary to set
the indoor unit number (control address).
Indoor unit number setting
Indoor unit number setting switch and confirmation of the settings.
There is a 4-position dial switch for setting the indoor unit number on the computer board of
the indoor unit.
Setting way is as follows:
Before connecting the power supply, please set the indoor unit number manually according
to the following table
Matrix of the dial switch and indoor unit number
Example:
0
0
0
1
1
0
0
2
0
1
0
3
1
1
0
4
0
0
1
5
1
0
1
6
Position 1 Position 2 Position 3 Representing unit number
33
Electric wiring
Wire connection for built-in indoor unit
Insert from outside the connection wire and signal transmission wire through the wall hole
with pipeline already arranged.
Pull out the front ends of connection wire and signal wire and make a circle on the signal
wire.
Connect the connection wire according to the connection method and indoor and outdoor
wiring diagram.
Pull the connecting conductor outwards slightly to confirm it is clamped tightly.
Connect the plug for connecting the signal wire with the plug of the signal wire connected
from the indoor unit.
After wire connection is finished, install wire clips using the same method for connection
wire clamping.
Note: When connecting the indoor unit and the outdoor unit, please do connect the wires
with the same color terminals.
Notes:
Before connecting the conductors between indoor unit and outdoor unit, check for the number
on the indoor and outdoor units connecting terminals. Connect the terminals with the same
color and number with a wire.
Wrong connection would damage the controller of the air conditioner or the machine couldnt
operate.
Do not connect the connection wire and signal wire with the same cable. They shall be
connected respectively to ensure system normal operation.
Installation Procedure
1
0
0
Pos.1 Pos.
2
Pos.
3
Pos.
4
Setting for No. 2
indoor unit
Disabled
: 0
: 1