Changes In "Mx1" Series Functions / Parts - Panasonic Urban Multi MX1R Series Service Manual

PACD011001C2
1.2

Changes in "MX1" Series Functions / Parts

1.2.1 Changes in the System as a Whole
More outdoor units A maximum of 16 indoor units can now be connected to a single system.
can be connected.
5HP .......... 8 units
8HP .......... 13 units
10HP ........ 16 units
Same wiring can be
Up to now, separate wiring was required for centralised control and for transmission between indoor/
used for outdoor units when installing optional controllers for centralised control, but now the same wiring can be
transmission
used for both. This facilitates indoor/outdoor transmission wiring construction work as follows.
between indoor/
outdoor units and
MX1 Series
‹ Same terminals used for input and output.
centralised control
‹ 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.
„ Indoor unit terminal block
MX1
Series
„ Outdoor unit terminal block
MX1
Series
2 central remote UM Inverter MX1 Series equipment can be connected with two central remote controllers, and can
controller can be
individual control 128 unit (64 units T 2) on a single transmission line.
connected in a
transmission
system.
Change in Mode of
Wiring for transmission between outdoor units is necessary for selecting cool or heat mode for several units
Transmission
at once. This transmission has been changed as follows.
Between Outdoor
Units
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
‹ Transmission can be conducted between a maximum of 10 units.
‹ Optional controllers for centralised control can be connected to a transmission line between outdoor
General Information Urban Multi "MX1, ME1 Series" Using R-22
(Max. wiring length up to 1,000 meters).
Remote controller Transmission
N P
C / H selector
A B C
of outdoor units.
units.
External
wiring
F1 F2 T1
To In / D unit To Out / D unit
F1 F2 F1
Outline of System
T2
F2
5