Mitsubishi Electric PQHY-P250YHM-A, Справочник данных

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(2) Power supply switch connector connection on the outdoor unit
(Factory setting: The male power supply switch connector is connected to CN41.)
* When the system controller is connected to the indoor/outdoor transmission line and the power is supplied from the
outdoor unit, do not to turn off the outdoor unit. If its power supply is cut, the power is not supplied to the system controller,
and the functions will not work.
* In the system that consists of two refrigerant circuits, move the power jumper from (CN41) to(CN40) on only one of the
outdoor units even when the system controller is not connected.
(3) Choosing the temperature detection spot by indoor unit
(Factory Setting: SWC “Standard”)
When using the suction temperature sensor, set SWC to “Option.”
(The discharge temperature sensor is supplied as standard specification.)
Refer to P55.
(4) Setting the MA “Sub” controller
When using two remote controllers or running two indoor units as a group, one of the controllers must be set to “Sub”
controller.
* No more than two remote controllers can be connected to a group. (Factory setting: “Main”)
Set the controller according to the following procedure. Refer also to the instructions manual supplied with the MA remote
controller.
(5) Connection of two refrigerant circuits
When two refrigerant circuits are connected on site, make the switch settings on the controller circuit board following the
instructions described in the installation manual for the indoor unit.
System
configuration
Connection to
the system
controller
Power supply unit
for transmission
lines
Grouping the indoor
units connected to
different outdoor
units
Power supply switch connector connection
System in which
indoor
units connected
to one
outdoor unit
- - -
Leave the male connector on CN41 as it is.
(Factory setting)
System in which
indoor units
connected to two
outdoor units
Not connected -
Not grouped
Grouped Disconnect the male connector from the
female power supply switch connector
(CN41) and connect it to the female power
supply switch connector (CN40) on only
one of the outdoor units (OC).
·Connect the S (shielded) terminal on the
terminal block (TB7) on the outdoor unit
whose male connector on CN41 was
disconnected and connected to CN40 to
the earth terminal (
) on the control
box.
With connection
to indoor-outdoor
transmission line
Not required
Grouped
/Not grouped
With connection
to transmission
line for central-
ized control
Not required
(Powered from
the outdoor unit)
Grouped
/Not grouped
Required
Grouped
/Not grouped
Leave the male connector on CN41 as it is.
(Factory setting)
Remote controller body Dip switches
1
ON
2 3 4
Screwdriver
Remove the cover on the remote controller
Set Dip Switch No.1 on the remote
controller to “OFF” (Main to Sub)
Insert a flat-head screwdriver in the
groove shown in the picture, and
move the screwdriver in the direction
shown in the arrow.