Mitsubishi Electric PUHY-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 2-7-1
Only use shielded cables.
Shielded cable connection
Same as 2-7-1
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
outdoor units (OC) in different refrigerant circuits.
a) When connecting TB7, only commence after checking
that the voltage is below 20 VDC.
Only use shielded cables.
(5) Address setting method
Proce-
Unit or controller
dures
1 Indoor Main unit IC
unit
Sub unit
2 LOSSNAY
3 MA Main
remote remote
control- controller
ler
Sub
remote
controller
4 Outdoor unit
5 Auxiliary Hydro
outdoor unit
unit
16
- chapter 2
Address setting
range
01 to 50
LC 01 to 50
MA No
settings required.
MA Sub
remote controller
OC 51 to 99
HU 52 to 100
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. Short-circuit the earth terminal (
minal 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
Same as 2-7-2
5) Switch setting
Address setting is required as follows.
Setting method
Assign the smallest ad- To perform a group
dress to the main unit in operation of indoor
the group. units that have differ-
ent functions, desig-
Assign sequential num-
nate the indoor unit in
bers starting with the ad-
the group with the
dress of the main unit in
greatest number of
the same group +1. (Main
functions as the main
unit address +1, main unit
unit.
address +2, main unit ad-
dress +3, etc.)
Assign an arbitrary but None of these ad-
unique address to each of dresses may overlap
these units after assigning any of the indoor unit
an address to all indoor addresses.
units.
-
Settings to be made ac-
cording to the remote con-
troller function selection
Assign the smallest ad- To set the address to
dress to the outdoor unit 100, set the rotary
(OC) in the same refriger- switches to 50.
ant circuit. If the address as-
signed to the hydro
unit overlaps any of
the addresses as-
signed to the outdoor
units, use a different,
unused address in the
specified setting
range.
Assign an address that
equals the "address of the
outdoor unit in the same
refrigerant circuit plus 1" to
the unit.
) and the S ter-
Factory
Notes
setting
00
00
Main
00
00
BS_02_E