Mitsubishi Electric PURY-M200YNW-A1 Service Handbook page 47

[2-7 Example System with an MA Remote Controller ]
(4) Wiring method
1) Indoor/outdoor transmission line
Daisy-chain terminals M1 and M2 of the terminal block
for indoor-outdoor transmission line (TB3) on the outdoor
unit (OC), of the terminal block for indoor-outdoor trans-
mission line (TB3) on the main HBC (HB), and of the ter-
minal block for indoor-outdoor transmission line (TB5) on
each indoor unit (IC). (Non-polarized two-wire)
Only use shielded cables.
Shielded cable connection
Daisy-chain the ground terminal (
(OC), the S terminal of the terminal block (TB3) on the
HBC (HB), and the S terminal of the terminal block (TB5)
on the indoor unit (IC) with the shield of the shielded ca-
ble.
2) Transmission line for centralized control
No connection is required.
3) MA remote controller wiring
Connect terminals 1 and 2 on the terminal block for MA
remote controller line (TB15) on the indoor unit (IC) to the
terminal block on the MA remote controller (MA).
(Non-polarized two-wire)
When 2 remote controllers are connected to the sys-
tem
(5) Address setting method
Proce-
Unit or controller
dures
1 Indoor unit
2 MA
remote con-
troller
3 Outdoor unit
4 Auxiliary
outdoor unit
12
- chapter 2
) on the outdoor unit
Address set-
ting range
Main unit IC No settings
required.
Sub unit IC
Main MA No settings
remote con- required.
troller
Sub MA Sub
remote con- remote con-
troller troller
OC No settings
required.
HBC HB No settings
required.
When 2 remote controllers are connected to the system,
connect terminals 1 and 2 of the terminal block (TB15) on
the indoor unit (IC) to the terminal block on the two MA
remote controllers.
Set one of the MA remote controllers as a sub controller.
(Refer to the Instruction Manual for the MA remote con-
troller for the setting method.)
Group operation of indoor units
To perform a group operation of indoor units (IC), daisy-
chain terminals 1 and 2 on the terminal block (TB15) on
all indoor units (IC) in the same group, and then connect
terminals 1 and 2 on the terminal block (TB15) on the in-
door unit on one end to the terminal block on the MA re-
mote controller. (Non-polarized two-wire)
When performing a group operation of indoor units that
have different functions, "Automatic indoor/outdoor ad-
dress setup" is not available.
4) Switch setting
No address settings required.
5) When replacing the control board on only some of the
outdoor units, delete all connection information. (Refer to
[5-1-1 Outdoor Unit Switch Functions and Factory Set-
tings] for information on switch functions.)
Setting method
- Port number setting is re-
quired
For information about how to
perform a group operation of
indoor units that feature dif-
ferent functions, refer to the
following page(s). [2-7-2
Single Refrigerant System]
-
Settings to be
made with the
Sub/Main
switch
-
-
Factory
Notes
setting
00
Main
00
00
BS_02_L