Toshiba RBM-Y1801F4PE Installation Manual page 16

<In case of connecting two group operations of
indoor units>
FS unit
Piping
Indoor unit
Remote
controller
Group control Group control
[ 0E ] : 1 1 1 1
[ FE ] : 1 1 1 1
[ FD ] : 0 0 0 0
<In case of connecting one group operation of
indoor units and two indoor units>
FS unit
Piping
Indoor unit
Remote
controller
Group control
[ 0E ] : 1 1 0 0
[ FE ] : 1 1 1 1
[ FD ] : 0 0 0 0
<In case of connecting four indoor units>
FS unit
Piping
Indoor unit
Remote controller
[ 0E ] : 0 0 0 0
[ FE ] : 1 1 1 1
[ FD ] : 0 0 0 0
EN-29
<Incorrect connection examples>
Incorrect
FS unit Single port type FS unit
Piping
Indoor
unit
Remote controller
Group control
Incorrect
FS unit Multi port type FS unit
Piping
Indoor
unit
Remote controller
Group control
Incorrect
FS unit
Piping
Indoor
unit
Remote controller
Group control
15
In case of connecting Drain pump (locally procured)
It's available to connect the operation-off signal input cable of fl oat switch.
At that time, the cable is taken from the hole on the control-box bottom side and connect to CN34 on PC board
of unit No.1 (showing "1" on the label).
Be sure to connect the energized indoor unit to unit No.1 of FS unit.
Attach Rubber-bushing (accessory) to the hole to prevent the cable is damaged by edge of hole. The length of
a fl oat switch cable should be 5 m or less.
Attach Clamp-fi lter
(accessory)
To turn at once
Control box
in the fi lter
Binding band
(accessory)
Cut away
In case of connecting fl oat switch, concatenate between each CN34 of all P.C.board with wires (locally
procured).
Concatenate between
each CN34 with wires
(locally procured)
Connect
to CN34
A B
Communication wire
Float switch cable
(locally procured)
Attach Rubber-bushing
(accessory)
EN-30