Mitsubishi Electric PURY-M200YNW-A1 Service Handbook page 55

[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 ter-
minal block for indoor-outdoor transmission line (TB3) on the main
and sub HBCs (HB and HS), of the terminal block for indoor-outdoor
transmission line (TB5) on each indoor unit (IC), and the S terminal
of the system controller.(Non-polarized two-wire)
Only use shielded cables.
Shielded cable connection
Daisy-chain the ground terminal (
S terminal of the terminal block (TB3) on the HB and HS, and the S
terminal of the terminal block (TB5) on the indoor unit (IC) with the
shield of the shielded cable.
2) Transmission line for centralized control
Daisy-chain terminals M1 and M2 on the terminal block for transmis-
sion line for centralized control (TB7) on the outdoor units (OC) in
different refrigerant circuit and on the OC in the same refrigerant cir-
cuit.
If a power supply unit is not connected to the transmission line for
centralized control, replace the power jumper connector on the con-
trol board from CN41 to CN40 on only one of the outdoor units.
(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
4 Auxiliary
HBC (Main)
outdoor
HBC (Sub)
unit
20
- chapter 2
) on the outdoor unit (OC), the
Address
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.
Set the central control switch (SW5-1) on the control board of all out-
door units to "ON."
a) When connecting TB7, only commence after checking that the volt-
age is below 20 VDC.
Only use shielded cables.
Shielded cable connection
Daisy-chain the S terminal on the terminal block (TB7) on the out-
door units (OC, OS) with the shield wire of the shielded cable. Short-
circuit the earth 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.
Setting method
-
Make the same indoor unit
group settings with the system
controller as the ones that
were made with the MA remote
controller.
) and the S terminal on the terminal
Facto-
Notes ry set-
ting
Port number setting is
required
To perform a group op-
eration of indoor units
that feature different
functions, designate
the indoor unit in the
group with the greatest
number of functions as
the main unit.
Main
To set the address to 100,
set the rotary switches to 50.
If the addresses that is as-
signed to the main HBC
overlaps any of the address-
es that are assigned to the
outdoor units or to the sub
HBC, use a different, un-
used address within the set-
ting range.
The use of a sub HBC re-
quires the connection of a
main HBC.
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