Mitsubishi Electric PUHY-M200YNW-A1 Service Handbook page 55

[2-7 Example System with an MA Remote Controller ]
(4) Wiring method
1) Indoor/outdoor transmission line
Same as 2-7-1
Shielded cable connection
Same as 2-7-1
2) Transmission line for centralized control
Daisy-chain terminals A and B on the system controller,
terminals M1 and M2 on the terminal block for transmis-
sion line for centralized control (TB7) on the outdoor
units (OC) in different refrigerant circuits.
If a system controller is connected, set the central control
switch (SW5-1) on the control board of all outdoor units
to "ON."
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 on the terminal block (TB7) on
the outdoor units (OC) with the shield wire of the shielded
cable. Daisy-chain the S-terminal of the system control-
ler and the S-terminals on TB7 (terminal block for cen-
tralized control transmission lines) of the outdoor units
(5) Address setting method
Proce-
Unit or controller
dures
1 Indoor unit Main unit IC
Sub unit
2 LOSSNAY
3 MA Main
remote remote
controller control-
ler
Sub
remote
control-
ler
4 Outdoor unit
5 Auxiliary Hydro
outdoor unit
unit
18
- chapter 2
Address
setting
range
01 to 50 Assign the smallest address
to the main unit in the group.
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.)
LC 01 to 50 Assign an arbitrary but
unique address to each of
these units after assigning
an address to all indoor units.
MA No
settings re-
quired.
MA Sub Settings to be made accord-
remote con- ing to the remote controller
troller function selection
OC 51 to 99 Assign the smallest address
to the outdoor unit (OC) in
the same refrigerant circuit.
HU 52 to 100 Assign an address that
equals the "address of the
outdoor unit in the same re-
frigerant circuit plus 1" to the
unit.
(OC) in different refrigerant circuits. Short-circuit the
earth terminal ( ) and the S 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 sys-
tem
Same as 2-7-1
Group operation of indoor units
Same as 2-7-1
4) LOSSNAY connection
Connect terminals M1 and M2 on the terminal block
(TB5) on the indoor unit (IC) to the appropriate terminals
on the terminal block for indoor-outdoor transmission line
(TB5) on LOSSNAY (LC). (Non-polarized 2-core cable)
Indoor units must be interlocked with the LOSSNAY unit
using the system controller. (Refer to the operation man-
ual for the system controller for the setting method.) In-
terlock setting from the remote controller is required if the
ON/OFF remote controller alone or the LM adapter alone
is connected.
5) Switch setting
Address setting is required as follows.
Setting method
To perform a group oper-
ation of indoor units that
have different functions,
designate the indoor unit
in the group with the
greatest number of func-
tions as the main unit.
None of these addresses
may overlap any of the in-
door unit addresses.
- Enter the same indoor
unit group settings on the
system controller as the
ones that were entered on
the MA remote controller.
To set the address to 100,
set the rotary switches to
50.
If the address assigned to
the hydro unit overlaps
any of the addresses as-
signed to the outdoor
units, use a different, un-
used address in the spec-
ified setting range.
Factory
Notes
setting
00
00
Main
00
00
BS_02_E