Toshiba MMU-AP0121MH - Manual (Page 43)

43
n Leaving-ON prevention control
[Function]
• This function controls the indoor units individually. It is connected with cable to the control P.C. board of the
indoor unit.
• In a group control, it is connected with cable to the indoor unit (Control P.C. board), and the item code
-
is
set to the connected indoor unit.
• It is used when the start operation from outside if unnecessary but the stop operation is necessary.
• Using a card switch box, card lock, etc, the forgotten-OFF of the indoor unit can be protected.
• When inserting a card, start/stop operation from the remote controller is allowed.
• When taking out a card, the system stops if the indoor unit is operating and start/stop operation from the
remote controller is forbidden.
(1) Control items
1) Outside contact ON : The start/stop operation from the remote controller is allowed.
(Status that card is inserted in the card switch box)
2) Outside contact OFF : If the indoor unit is operating, it is stopped forcedly.
(Start/Stop prohibited to remote controller)
(Status that card is taken out from the card switch box)
∗ When the card switch box does not perform the above contact operation, convert it using a relay with b
contact.
(2) Operation
Handle the wired remote controller switch in the following procedure.
∗
Use the wired remote controller switch during stop of the system.
1
Push concurrently SET + CL + TEST buttons for 4 seconds or more.
2
Using the setup temp or button, specify the item code
-
.
3
Using the timer time or button, set to the setup data.
4
Push SET button.
5
Push TEST button. (The status returns to the usual stop status.)
(3) Wiring
n Power peak-cut from indoor unit
When the relay is turned on, a forced thermostat-OFF operation starts.
1
2 1
2
3
4 3
4
5
6 5
6
CN61
T10
(YEL)
Relay (procured locally)
Indoor control P.C. board
Note) Determine the cable length between the indoor control P.C. board and the relay within 2m.
* In the figure, the contact indicates
a status that the card is taken out.
Power supply
Outside contact (Card switch box, etc: Procured locally)
1
2 1
2
EXCT
(2P plug: RED)
CN73
Relay (procured locally)
Note) Determine the cable length between the indoor or
outdoor control P.C. board and the relay within 2m.
Relay coil signal
Indoor control P.C. board
• Wiring example