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Mitsubishi Electric PURY-P72 Service Handbook page 93

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Table of Contents
[IV Remote Controller]
[1] Functions and Specifications of MA and ME Remote Controllers
There are two types of remote controllers: M·NET (ME) remote controller, which is connected on the indoor-outdoor
transmission line, and MA remote controller, which is connected to each indoor unit.
1. Comparison of functions and specifications between MA
and
ME remote controllers
Functions/specifications
MA remote controller"1"2
M-NET (ME) remote controller"2"3
Remote controller address settings
Not required
Required
Indoor/outdoor unit address set-
Not required (required only by a system
Required
tings
with one outdoor unitf4
Wiring method
Non-polarized 2-core cable
Non-polarized 2-core cable
*To perform a group operation, daisy-
chain the indoor units using non-polar-
ized 2-core cables.
Remote controller connection
Connectable to any indoor unit in the
Connectable anywhere on the indoor-out-
group
door transmission line
Interlock with the ventilation unit
Each indoor unit can individually be in-
Each indoor unit can individually be inter-
terlocked with a ventilation unit. (Set up
locked with a ventilation unit. (Set up via
via remote controller in the group.)
remote controller.)
Changes to be made upon group-
MA remote controller wiring between in- Either the indoor unit address and remote
ing change
door units requires rewiring.
controller address must both be changed,
or the registration information must be
changed via MELANS.
*1. MA remote controller refers to MA remote controller (PAR-20MAA, PAR-21 MAA), MA simple remote controller, and wire-
less remote controller.
*2. Either the MA remote controller or the M-NET remote controller can be connected when a group operation of units in a
system with multiple outdoor units is conducted or when a system controller is connected.
*3. M-NET remote controller refers to ME remote controller and ME simple remote controller.
*4. Depending on the system configuration, some systems with one outdoor unit may require address settings.
2. Remote controller selection criteria
MA remote controller and M-NET remote controller have different functions and characteristics. Choose the one that better
suits the requirements of a given system. Use the following criteria as a reference.
MA remote controller 1 "2
M-NET (ME) remote controller
1
"2
-There is little likelihood of system expansion and group-
-There is a likelihood of centralized installation of remote
ing changes.
controllers, system expansion, and grouping changes.
-Grouping (floor plan) has been set at the time of instal-
-Grouping (floor plan) has not been set at the time of in-
lation.
stallation.
-To connect the remote controller directly to the OA pro-
cessing unit.
*1. M-NET remote controller and MA remote controller cannot both be connected to the same group of indoor units.
"2. A system controller must be connected to a system to which both MA remote controller and M-NET remote controller are
connected.
M-NET
transmjssion line
(indoor/outdoor transmission line)
--1-----
1
L
J----1
______
_ gro_LJE..._. __
_ gro_LJE..._
j
i i i
i
t !
Ii
j
Be
controller
I
I I
I
l__
~~rem~te c~ntrol~~j
l
~~d_oor ~~j
M-NET
transmission line
(indoor/outdoor transmission line)
______..1_
gr~~J
r--L---J-
gr~up
--1
i
'
i
t
!
!
Be
controller!
!
I
I I
Indoor unit
I
_
M-~ET r~mOI~ con!ro/le~
_
HWEOB03A
- 83-
GB
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