92
Communication wiring figure (Wired)
Communication wire
with polarity
control wire for wired
controller with polarity
Note:
•
Outdoor units are in parallel through 3 polar wires. The outdoor and all VP (cooling and heating switching device)
and all indoor units are in parallel through 2 non-polar wires.
• Each VP can be connected to 1~8 indoor units. For the wiring, please refer to the above picture: VP1 is
connected to Indoor 1~3, and the capacity of all the indoor units can not be more than the VP’s. Indoor units
which are not connected to VP just have cooling operation, and the wiring can be referred to Indoor 16~20 on the
above picture.
• The communication line must be hand-in-hand serial connection, not using star connection.
• When the length of the single line of communication is not sufficient, the joint connection must be pressed or
solder.
•
There are three connecting ways between wired control and indoor units:
A. One wired controller controls multiple units, as shown in the above figure, (1-5 indoor units). The indoor unit 5
is the wired control master unit (directly connected to the indoor unit of wired controller) and others are the wired
control slave units. 3 and 4 indoor units are DC fan motor models, 1 and 2 indoor units are the AC fan motor
models. The wired controller is connected with the master unit and DC fan motor models through three lines with
polarity. Other indoor units and the master unit are connected via two lines with polarity. SW01 on the main unit is
set to 0 while SW01 on other slave units are set to 1, 2, 3 and so on in turn. (Please refer to the dip switch setting)
Summary of Contents for MRV 5-RC AB052MAERA
Page 1: ...MRV 5 RC Service Manual SYJS 03 2019REV A Edition 2019 03 ...
Page 3: ......
Page 55: ...52 AV08 10 12 14IMVURA 4 Center of gravity x X 347 9587 y 471 5454 z 725 6683 y z ...
Page 56: ...53 AV16 18 20 22IMVURA x X 650 5962 y 380 7255 z 706 5342 y z ...
Page 106: ...103 2 Dimension 4 19 200 60 25 25 25 249 108 232 84 69 388 73 82 65 103 177 4 44 4 35 277 ...
Page 116: ...113 2 Preparation before installation ...
Page 162: ...159 One by one valve box PCB code 0151800186A 2 Valve box PCB photo and dip switch setting ...
Page 165: ...162 One by four valve box PCB code 0151800466 ...