Mitsubishi Electric PUHY-HP200 Service Handbook page 44

[ II Restrictions ]
(4) Wiring method
1) Indoor/outdoor transmission line
Daisy-chain terminals M1 and M2 on the terminal block
for indoor-outdoor transmission line (TB3) on the outdoor
units (OC and OS) (Note), terminals M1 and M2 on the
terminal block for indoor-outdoor transmission line (TB5)
on each indoor unit (IC), and the S terminal on the sys-
tem controller. (Non-polarized two-wire)
Only use shielded cables.
The outdoor units in the same refrigerant circuit are au-
tomatically designated as OC and OS in the order of ca-
pacity from large to small (if two or more units have the
same capacity, in the order of address from small to
large).
Shielded cable connection
Daisy-chain the ground terminal (
units (OC and OS), the S terminal on the terminal block
(TB5) on the indoor unit (IC), and the S terminal on the
system controller with the shield wire of the shielded ca-
ble.
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 and on
the OC and OS in the same refrigerant circuit.
If a power supply unit is not connected to the transmis-
sion line for centralized control, replace the power jump-
er connector on the control 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 IC
unit
Sub unit
2 LOSSNAY
3 MA Main
remote remote
control- controller
ler
Sub
remote
controller
4 Outdoor unit
The outdoor units in the same refrigerant circuit are automatically designated as OC and OS.
HWE08110
) on the outdoor
Address set-
ting 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 100 Assign sequential address to
OS the outdoor units in the same
refrigerant circuit.
The outdoor units are auto-
matically designated as OC
and OS. (Note)
- 35 - 35
Set the central control switch (SW2-1) on the control
board of all outdoor units to "ON."
Only use shielded cables.
Shielded cable connection
Daisy-chain the S terminal on the terminal block (TB7) on
the outdoor units (OC and OS) with the shield wire of the
shielded cable. Short-circuit the earth terminal (
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 [5] 1.
When 2 remote controllers are connected to the sys-
tem
Same as [5] 1.
Group operation of indoor units
Same as [5] 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 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 is connected.
5) Switch setting
Address setting is required as follows.
Setting method
To perform a group opera-
tion of indoor units that have
different functions, desig-
nate the indoor unit in the
group with the greatest
number of functions 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 sys-
tem controller as the ones
that were entered on the MA
remote controller.
To set the address to 100,
set the rotary switches to 50.
) and
Factory
Notes
setting
00
00
Main
00
GB