It is important to note that when an RBC-IT4-PE
interface is used the standard 24hour timer functions within the
Toshiba remote or central controllers must not be selected to
avoid conflict in switching commands. Do not use the standard
RBC-WT1-PE or a RBC-EX21E seven day timer.
The remote controller on/off
button will be overridden whenever an interface is connected to
socket CN06 or CN61, regardless of whether the RBC-IT4PE is in
use or not. All other functions of the remote controller remain
unaffected.
When more than one system is connected for group
operation, it is essential to arrange the power supply to the
outdoor units so that the control circuits for all the indoor
units are fed from the same phase.
The interface should only be
fitted to the master indoor unit. If fitted to a slave indoor
unit then system shut down may occur.
It is recommended that the power
supply (230v.a.c.) be taken from the respective indoor unit, as
indicated on the wiring diagram.
The field sourced time-switch may
be located in any area. The a/c system will start when terminal
1 of the interface is energised and will override the remote
controller on/off functions.
Due to the logic used, it is
recommended that a minimum switching interval of 30 seconds be
adopted.
