PACD011001C2 Outline of System
General Information Urban Multi “MX1, ME1 Series” Using R-22 5
1.2 Changes in “MX1” Series Functions / Parts
1.2.1 Changes in the System as a Whole
More outdoor units
can be connected.
A maximum of 16 indoor units can now be connected to a single system.
5HP .......... 8 units
8HP .......... 13 units
10HP ........ 16 units
Same wiring can be
used for
transmission
between indoor/
outdoor units and
centralised control
Up to now, separate wiring was required for centralised control and for transmission between indoor/
outdoor units when installing optional controllers for centralised control, but now the same wiring can be
used for both. This facilitates indoor/outdoor transmission wiring construction work as follows.
MX1 Series
‹
Same terminals used for input and output.
‹
No polarity.
‹
3 wiring methods can be used (serial, bus and star wiring).
‹
Up to 16 branches can be used. (Cannot be branched again once branched.)
‹
System wiring can be up to a total of 2,000 meters.
(Max. wiring length up to 1,000 meters).
„
Indoor unit terminal block
„
Outdoor unit terminal block
2 central remote
controller can be
connected in a
transmission
system.
UM Inverter MX1 Series equipment can be connected with two central remote controllers, and can
individual control 128 unit (64 units T 2) on a single transmission line.
Change in Mode of
Transmission
Between Outdoor
Units
Wiring for transmission between outdoor units is necessary for selecting cool or heat mode for several units
at once. This transmission has been changed as follows.
MX1 Series
‹
Same terminals used for input and output.
‹
Sequential start requires only wiring between outdoor units and setting.
‹
Simultaneous cool/heat selection and low noise operation require a separate adaptor for outside control
of outdoor units.
‹
Transmission can be conducted between a maximum of 10 units.
‹
Optional controllers for centralised control can be connected to a transmission line between outdoor
units.
MX1
Series
Remote controller Transmission
wiring
External
N P F1 F2 T1 T2
MX1
Series
C / H selector To In / D unit To Out / D unit
A B C F1F2F1F2
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