Mitsubishi Electric City Multi CMB-P1016NU-G, Service Handbook

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[
II
Restrictions ]
Wiring method/address setting method
1) Indoor/outdoor (heat source) transmission line
Daisy-chain terminals M1 and M2 on the terminal block for indoor-outdoor (heat source) transmission line (TB3) on
the outdoor (heat source) unit (OC), terminals M1 and M2 of the terminal block for indoor-outdoor (heat source)
transmission line (TB02) on the BC controller (BC), and terminals M1 and M2 on the terminal block for indoor-out-
door (heat source) transmission line (TB5) on each indoor unit (IC). (Non-polarized 2-core cable)
ΠOnly use shielded cables.
[Shielded cable connection]
To ground the shielded cable, daisy-chain the ground terminal ( )on the outdoor (heat source) unit (OC), S termi-
nals on the terminal block (TB3) on the terminal block (TB1) on the BC controller (BC), and the S terminal on the
terminal block (TB5) on the indoor unit (IC).
2) Transmission line for centralized control
No connection is required.
3) MA remote controller wiring
Connect terminals 1 and 2 on the terminal block for MA remote controller line (TB15) on the indoor unit (IC) to the
terminal block on the MA remote controller (MA). (Non-polarized 2-core cable)
Œ
MA remote controllers can be connected to the indoor units of type C or later.
[When 2 remote controllers are connected to the system]
When 2 remote controllers are connected to the system, connect terminals 1 and 2 of the terminal block (TB15) on
the indoor unit (IC) to the terminal block on the two MA remote controllers.
ΠSet one of the MA remote controllers to sub. (Refer to MA remote controller function selection (4 [3]2.) or the in-
stallation manual for the MA remote controller for the setting method.)
[Group operation of indoor units]
To perform a group operation of indoor units (IC), daisy-chain terminals 1 and 2 on the terminal block (TB15) on all
indoor units (IC) in the same group, and then connect terminals 1 and 2 on the terminal block (TB15) on the indoor
unit on one end to the terminal block on the MA remote controller. (Non-polarized 2-core cable)
ΠTo perform a group operation of indoor units that have different functions, refer to [4] 2.
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 (heat source) transmission line (TB5) on LOSSNAY (LC). (Non-polarized 2-
core cable)
ΠInterlock operation setting with all the indoor units in the same system will automatically be made.
ΠRefer to "[4] 2. Manual address setup for both indoor and outdoor (heat source) units" in the following cases: per-
forming an interlock operation of part of the indoor units in the system with a LOSSNAY unit, using LOSSNAY
alone without interlocking it with any units, performing an interlock operation of more than 16 indoor units with a
LOSSNAY unit, or connecting two or more LOSSNAY units to indoor units in the same system.
5) Switch setting
No address settings required.
Pro
ce-
du-
res
Unit or controller
Address
setting
range
Setting method Notes
Facto-
ry set-
ting
1 Indoor
unit Main unit IC No settings
required. - ΠPort number setting is re-
quired by an R2 or WR2
system.
ΠTo perform a group opera-
tion of indoor units that
have different functions,
refer to [4] 2.
00
Sub unit IC
2 LOSSNAY LC No settings
required. - 00
3 MA
remote
controller Main
remote
controller MA No settings
required. - Main
Sub
remote
controller MA Sub
remote
controller Settings to be made ac-
cording to the remote con-
troller function selection
4 Outdoor (heat source)
unit OC No settings
required. - 00
5 Auxiliary
unit BC
controller BC