Mitsubishi Electric CMB-WM108V-AA Service Handbook page 51

[ II Restrictions ]
(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 (TB02) on the main and sub HBC controllers
(HB and HS), and of the terminal block for indoor-outdoor
transmission line (TB5) on each indoor unit (IC). (Non-
polarized two-wire)
Only use shielded cables.
Shielded cable connection
Daisy-chain the ground terminal (
(OC), the S terminal of the terminal block (TB02) on HB
and HS, 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
No connection is required.
3) MA remote controller wiring
(5) Address setting method
Proce-
Unit or controller
dures
1 Indoor
unit
2 LOSSNAY
3 MA
remote
controller
4 Outdoor unit
5 Auxiliary
outdoor
unit
HWE1708A
) on the outdoor unit
Address
setting
range
Main unit IC 01 to 50
Sub unit
LC 01 to 50
Main MA No set-
remote tings re-
controller quired.
Sub MA Sub
remote remote
controller controller
OC 51 to 100
HBC con- HB 51 to 100
troller
(Main)
HS
HBC con-
troller (Sub)
Same as [7] -1-
When 2 remote controllers are connected to the sys-
tem
Same as [7] -1-
Group operation of indoor units
Same as [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 (TB5) on LOSSNAY (LC). (Non-po-
larized two-wire)
Interlock setting between the indoor units and
LOSSNAY units must be entered on the remote control-
ler. For information about how to interlock the operation
of indoor and LOSSNAY units.
5) Switch setting
Address setting is required as follows.
Setting method
Assign the smallest address to the main
unit in the group.
In a system with two or more HBC con-
trollers, make the settings for the indoor
units in the following order.
(i) Indoor unit to be connected to the main
HBC controller 1
(ii) Indoor unit to be connected to sub
HBC controller 1
(iii) Indoor unit to be connected to the
main HBC controller 2
(iv) Indoor unit to be connected to sub
HBC controller 2
Make the settings for the indoor units in
the way that the formula "(i) < (ii) < (iii) <
(iv)" is true.
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.)
Assign an arbitrary but unique address to
each of these units after assigning an ad-
dress to all indoor units.
-
Settings to be made with the Sub/
Main switch
Assign sequential address to the outdoor
units in the same refrigerant circuit.
OC +1
Assign an address that equals the sum of
the smallest address of the indoor units
that are connected to the sub HBC control-
ler and 50.
- 42 -
Notes
Port number setting is
required
To perform a group op-
eration of indoor units
that feature different
functions, designate
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 indoor unit
addresses.
To set the address to 100,
set the rotary switches to 50.
If the addresses that is as-
signed to the main HBC
controller overlaps any of
the addresses that are as-
signed to the outdoor units
or to the sub HBC controller,
use a different, unused ad-
dress within the setting
range.
The use of a sub HBC con-
troller requires the connec-
tion of a main HBC
controller.
Fac-
tory
set-
ting
00
00
Main
00
GB