Mitsubishi PUHY-P250YJM-A - Switch Settings & Address Configuration

[ II Restrictions ]
- 20 -
HWE1018A GB
[3] Switch Settings and Address Settings
1. Switch setting
Refer to section "[4] An Example of a System to which an MA Remote Controller is connected" before performing wiring work.
Set the switches while the power is turned off.
If the switch settings are changed while the unit is being powered, those changes will not take effect, and the unit will not
function properly.
2. Address settings
(1) Address settings table
The need for address settings and the range of address setting depend on the configuration of the system. Refer to section
"II [4] An Example of a System to which an MA Remote Controller is connected"
*1. If a given address overlaps any of the addresses that are assigned to indoor or outdoor units in other refrigerant systems,
use a different, unused address within the setting range.
(2) Power supply switch connector connection on the outdoor unit
(Factory setting: The male power supply switch connector is connected to CN41.)
Unit or controller Symbols Address setting
range
Setting method Ad-
dress
setting
Indoor
unit
Main/sub
unit
IC 01 to 50
*1
In case of 10HP system, assign an odd number starting with
"01". In case of 20HP system with two refrigerant circuits, as-
sign a sequential odd number starting with "01" to the upper
indoor controller, and assign "the address of the upper indoor
controller + 1" to the lower indoor controller.
00
MA remote
controller
MA No address settings required. (The main/sub switch must be configured if two
remote controllers are connected to the system or if the indoor units are con-
nected to different outdoor units.)
Main
Outdoor unit OC 51 to 100
*1
Assign an address of the indoor units in the same refriger-
ant system and 50.
00
System configura-
tion
Connection to the
system controller
Power supply unit for
transmission lines
Group operation of
units in a system with
multiple outdoor units
Power supply switch con-
nector connection
System with one
outdoor unit
_ _ _ Leave CN41 as it is
(Factory setting)
System with multi-
ple outdoor units
Not connected _ Not grouped
Grouped Disconnect the male con-
nector from the female
power supply switch con-
nector (CN41) and con-
nect it to the female power
supply switch connector
(CN40) on only one of the
outdoor units.
*Connect the S (shielded)
terminal on the terminal
block (TB7) on the out-
door unit whose CN41
was replaced with CN40
to the ground terminal
( ) on the electric box.
With connection to
the indoor-outdoor
transmission line
Not required Grouped/not grouped
With connection to
the centralized con-
trol system
Not required
(Powered from the
outdoor unit)
Grouped/not grouped
Required Grouped/not grouped Leave CN41 as it is
(Factory setting)