Mitsubishi Electric PURY-M200YNW-A1 Service Handbook page 53

[2-7 Example System with an MA Remote Controller ]
(4) Wiring method
1) Indoor/outdoor transmission line
Same as 2-7-2
Only use shielded cables.
Shielded cable connection
Same as 2-7-2
2) Transmission line for centralized control
Daisy-chain terminals A and B on the system controller, ter-
minals M1 and M2 on the terminal block for transmission line
for centralized control (TB7) on the outdoor units (OC) in dif-
ferent refrigerant circuits and on the outdoor unit (OC) in the
same refrigerant circuit.
If a power supply unit is not connected to the transmission
line for centralized control, replace the power jumper con-
nector on the control board from CN41 to CN40 on only one
of the outdoor units.
If a system controller is connected, set the central control
switch (SW5-1) on the control board of all outdoor units to
"ON."
(5) Address setting method
Proce-
Unit or controller
dures
1 Indoor Main unit
unit
Sub unit
2 MA
Main
remote con-
remote
troller
controller
Sub
remote con-
troller
3 Outdoor unit (Note)
4 Auxiliary
HBC (Main)
outdoor
HBC (Sub)
unit
18
- chapter 2
Ad-
dress
Setting method
setting
range
IC 01 to Assign the smallest address to the main unit
in the group.
50
In a system with two or more HBCs, make
the settings for the indoor units in the fol-
lowing order.
(i) Indoor unit to be connected to the main
HBC
(ii) Indoor unit to be connected to the sub
HBC 1
(iii) Indoor unit to be connected to the sub
HBC 2
(iv) Indoor unit to be connected to the sub
HBC 3
Make the settings for the indoor units in the
way that the formula "(i) < (ii) < (iii) < (iv)" is
true.
Assign sequential numbers starting with the
address of the main unit in the same group
+1. (Main unit address +1, main unit address
+2, main unit address +3, etc.)
MA
No set-
tings re-
quired.
MA Sub Settings to be made with the Sub/
remote
Main switch
controller
OC
51 to 100  Set the address to "the smallest indoor unit
address in the same refrigerant circuit sys-
tem + 50."
HB OC +1
51 to 100
HS
Assign an address that equals the sum of the
smallest address of the indoor units that are
connected to the sub HBC and 50.
a) When connecting TB7, only commence after checking that
the voltage is below 20 VDC.
Only use shielded cables.
Shielded cable connection
Daisy-chain the S terminal of the terminal block (TB7) on the
system controller, OC with the shield of the shielded cable.
Short-circuit the earth terminal (
the terminal block (TB7) on the outdoor unit whose power
jumper connector is mated with CN40.
3) MA remote controller wiring
Same as 2-7-1
When 2 remote controllers are connected to the system
Same as 2-7-1
Group operation of indoor units
Same as 2-7-1
4) Switch setting
Address setting is required as follows.
Port number setting is re-
quired
To perform a group opera-
tion of indoor units that fea-
ture different functions,
designate the indoor unit in
the group with the greatest
number of functions as the
main unit.
-
Make the same indoor unit group
settings with the system controller
as the ones that were made with the
MA remote controller.
To set the address to 100, set the
rotary switches to 50.
If the addresses that is assigned to
the main HBC overlaps any of the
addresses that are assigned to
the outdoor units or to the sub
HBC, use a different, unused ad-
dress within the setting range.
The use of a sub HBC requires the
connection of a main HBC.
) and the S terminal on
Fac-
tory
Notes
set-
ting
00
Main
00
BS_02_L