Fig. 3-62
Schedule
timer
Field supply
Communication
wiring
(pink + blue)
Power wiring
(white & black)
System controller
(Back side)
Inter-unit control wiring
CAUTION
Fig. 3-63
T10
U1
U2
Indoor unit control
PCB
Inter-unit
control wiring
Schedule
timer
Communication
wiring (pink + blue)
Power wiring
(white + black)
Field supply
Indoor unit
1
The schedule timer wiring can be connected by the following two methods. Select one of these connection meth-
ods according to the actual installation location.
When wiring, extend the lengths of the wires using wire joints (provided) and extension wires (field supply).
When installing multiple schedule timers, avoid
the use of cross-over wiring.
Connection diagram (Be sure to use the provided wires as the power wiring.)
If a system controller is also installed:
Wiring
Connect the wires for the schedule timer inter-unit control wiring (see Note below) to the C1 and C2 terminals on
the system controller terminal board. Connect the system controller power wiring to CN02 and to the schedule
timer power wires (white + black).
The inter-unit control wiring has no polarity. The wiring may be connected in either direction to C1 and C2.
The power wiring has no polarity. The wiring may be connected in reverse.
The length of the power wiring must be no more than 100 m.
The inter-unit control wires are pink + blue + blue (using wire joint crimping).
Use pink + blue wires.
If a system controller is not installed (power is supplied
from the indoor unit):
(If the system controller or other central control device is not present, the schedule timer cannot be
used in combination with a system that does not utilize remote controllers.)
The only functions of the schedule timer are indoor unit ON/OFF and remote controller
enable/disable operations. It is therefore recommended that during installation, a system controller,
remote controller, or similar device be installed next to the schedule timer so that the operation
mode and other information can be checked.
The length of the power wiring must be no more than 200 m.
The power wiring has no polarity. The wiring may be connected in reverse.
If necessary, use a relay wire when connecting the wiring to the indoor unit control PCB.
The inter-unit control wiring has no polarity. The wiring may be connected in either direction to U1 and U2.
If power is supplied from the indoor unit control PCB of a nearby indoor unit, connect the provided T10 terminal
connection wires to the T10 terminal on the indoor unit control PCB, and to the schedule timer power wires.
NOTE
NOTE
3-90
Control of 3-WAY ECO-i SYSTEM
1
2
3
4
5
6
7
8
5. Schedule Timer
TD831143-00̲W-3WAY.indb 90
TD831143-00̲W-3WAY.indb 90
2008/12/01 10:26:48
2008/12/01 10:26:48
Содержание SPW-C0705DZH8
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