Mitsubishi Electric PUHY-M200YNW-A1 Service Handbook page 57

[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 terminal block for indoor-outdoor trans-
mission line (TB3) on the Hydro unit (HU), of the terminal
block for indoor-outdoor transmission line (TB5) on each
indoor unit (IC), and the S terminal of the system control-
ler.(Non-polarized two-wire)
Only use shielded cables.
Shielded cable connection
Daisy-chain the ground terminal (
(OC), the S terminal of the terminal block (TB3) on the
HU, 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 transmission line for centralized control (TB7) on the
outdoor units (OC) in different refrigerant circuits.
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.
(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 Auxilia- Hydro
ry out- unit
door
unit
20
- chapter 2
) on the outdoor unit
Address set-
ting range
01 to 50 Assign the smallest address to
the main unit in the group.
Assign sequential numbers start-
ing with the address of the main
unit in the same group +1. (Main
unit address +1, main unit ad-
dress +2, main unit address +3,
etc.)
LC 01 to 50 Assign an arbitrary but unique
address to each of these units af-
ter assigning an address to all in-
door 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.
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
Connect terminals M1 and M2 on the terminal block
(TB5) on the indoor units (IC) to the appropriate termi-
nals on the terminal block for indoor-outdoor transmis-
sion line (TB5) on LOSSNAY (LC). (Non-polarized two-
wire)
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 is connected.
5) Switch setting
Address setting is required as follows.
Setting method
To perform a group operation of
indoor units that have different
functions, designate the indoor
unit in the group with the great-
est number of functions as the
main unit.
None of these addresses may
overlap any of the indoor unit
addresses.
- Enter the same indoor unit
group settings on the system
controller as the ones that were
entered on the MA remote con-
troller.
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 assigned
to the outdoor units, use a
different, unused address in
the specified setting range.
) and the S ter-
Factory
Notes
setting
00
00
Main
00
00
BS_02_E