Mitsubishi Electric PURY-M200YNW-A1 Service Handbook page 51

[2-7 Example System with an MA Remote Controller ]
(4) Wiring method
1) Indoor/outdoor transmission line
Same as 2-7-2
Shielded cable connection
Same as 2-7-2
2) Transmission line for centralized control
Daisy-chain terminals M1 and M2 on the terminal block for
transmission line for centralized control (TB7) on the out-
door units (OC) in different refrigerant circuit and on the 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.
a) When connecting TB7, only commence after checking that
the voltage is below 20 VDC.
(5) Address setting method
Proce-
Unit or controller
dures
1 Indoor Main unit
unit
Sub unit
2 MA Main
remote remote
controller controller
Sub
remote
controller
3 Outdoor unit
4 Auxiliary HBC (Main)
outdoor
HBC (Sub)
unit
16
- chapter 2
Address
setting
range
IC 01 to 50
Assign the smallest address to the main
unit in the group.
In a system with two or more HBCs,
make the settings for the indoor units in
the following 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 cir-
cuit system + 50."
(If the address is already used, set to a
different address within the specified
range.)
HB 51 to 100 OC +1
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.
Only use shielded cables.
Shielded cable connection
Daisy-chain the S terminal on the terminal block (TB7) on
the outdoor unit (OC) with the shield wire of the shielded ca-
ble. Short-circuit the earth terminal (
on 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.
Setting method
Port number setting is
To perform a group op-
-
To set the address to 100,
If the addresses that is as-
The use of a sub HBC re-
) and the S terminal
Fac-
tory
Notes
set-
ting
00
required
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
00
set the rotary switches to 50.
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.
quires the connection of a
main HBC.
BS_02_L