35
5
Outdoor unit
TC
B-PCMO
4E
Size : 55.5 x 60 (mm)
[1] External master ON/OFF control
▼
Function
By connecting the cable (attached in this optional PCB) to the interface PC
board on an outdoor unit, all indoor units connected to the outdoor unit enable
to operate simultaneously.
SW1: Operation input switch
SW2: Stop input switch
Provide no-voltage pulse contacts for each terminal.
Hold the ON state for at least 100 msec.
Do not turn SW1 and SW2 ON simultaneously.
Application
* Installation the optional PCB
in the interface board of the
outdoor unit.
[2] Night time operation (sound reduction) control
▼
Function
As the cable (attached in this optional PCB) is connected to the “Interface
PCB” on an outdoor unit, both compressor speed and fan speed are restricted
while the signal of the night operation control is input. It makes the noise
reduction during the night time operation.
SW1: Night time signal switch
Each terminal should be connected to dry contact.
The input signal is recognized during its rising/falling phase.
(After reaching the top/bottom of the rising/falling edge, the signal must remain there for
at least 100 ms.)
Model
name
Appearance
Function
7
1
J
P
CN512
TB1
SW1
SW2
COM
HEAT
COOL
Locally procured
Optional PCB
Shield
wire
Outdoor unit
interface PCB
Connection cable
(attached in this
optional PCB)
Terminal
Input signal
Operation
COOL (SW1)
ON
OFF
All indoor units operate together
HEAT (SW2)
ON
OFF
All indoor units stop together
7
1
J
P
TB1
SW1
COM
HEAT
COOL
Outdoor unit
interface PCB
Connection cable
(attached in this
optional PCB)
Locally procured
Optional PCB
Shield
wire
CN508
Terminal
Input signal
Operation
COOL (SW1)
ON
OFF
Night time control
ON
OFF
Normal operation
