Test Run
5
- 6
8
7
6
5
4
3
2
1
4. Auto Address Setting
• If link wiring is not used (The inter-unit control wires are not connected to multiple refrigerant systems.)
ON
1
2
3
3
2
1
ON
1
ON
3
2
ON
1
2
2
ON
1
3
3
2
1
ON
ON
ON
OFF
ON
OFF
ON
OFF
ON
OFF
OFF
(S006)
(S007)
(S005)
(S004)
(S003)
(S002)
0
1
1-10
settings
Unit
OFF
System address
(system 1 setting)
outdoor
units (3 units
setting)
Case 1
(1) Automatic Address Setting from the Outdoor Unit
1. To set the number of outdoor units, on the outdoor main unit control PCB set the No. of outdoor units DIP switch (S006) to
ON
OFF
ON
1
2
3
2
3
ON
1
3
2
1
ON
ON
1
2
3
ON
ON
OFF
1
2
ON
OFF
2
3
ON
1
*
*
4. Auto Address Setting
Basic wiring diagram: Example (1)
Indoor unit addresses can be set without operating the compressors.
No. 1 (main outdoor unit)
No. of indoor units
(10 units setting)
No. of
Unit number
setting
(Unit No. 1)
Unit
number
setting
(Unit No. 2)
(S007)
No. 1
(Main)
Outdoor Unit
Inter-outdoor unit
control wiring
Leave the socket that
is used to short-circuit
the terminal plug.
(CN003)
Unit
No. 2
(Sub)
Inter-unit control wiring
Indoor Unit
Remote controller
Unit
No. 3
(Sub)
Unit
number
setting
(Unit No. 3)
ON
(S007)
No. 3 (sub unit)
No. 2 (sub unit)
Remote control
communication wiring
(3 units), and set the unit No. DIP switch (S007) to
(unit No. 1 - main outdoor unit).
(unit No. 2).
(unit No. 3).
On the No. 2 (sub) unit control PCB, set the unit No. switch (S007) to
On the No. 3 (sub) unit control PCB, set the unit No. switch (S007) to
On the outdoor main unit control PCB, check that the system address rotary switch (S002) is set to “1” and that the DIP
“0.” (These are the settings at the time of factory shipment.)
switch (S003) is set to
To set the number of indoor units that are connected to the outdoor unit to 10 on the outdoor main unit control PCB, set the
“1.” and set the rotary switch (S004) to “0.”
No. of indoor units DIP switch (S005) to
Turn ON the power to the indoor and outdoor units.
On the outdoor main unit control PCB, short-circuit the automatic address pin (CN100) for 1 second or longer, then release it.
(Communication for automatic address setting begins.)
To cancel, again short-circuit the automatic address pin (CN100) for 1 second or longer, then release it.
The LED that indicates that automatic address setting is in progress turns OFF and the process is stopped.
Be sure to perform automatic address setting again.
(Automatic address setting is completed when LEDs 1 and 2 on the outdoor main unit control PCB turn OFF.)
Operation from the remote controllers is now possible.
To perform automatic address setting from the remote controller, perform steps 1 to 5, then use the remote controller and
complete automatic address setting.
Refer to “Automatic Address Setting from the Remote Controller.”
3.
4.
2.
5.
6.
7.
Inter-outdoor unit
control wiring
Fig. 5-5
1-2
1-1
1-3
TD831158-00̲3WAY̲VRF̲SYS.indb 6
TD831158-00̲3WAY̲VRF̲SYS.indb 6
2012/01/24 10:54:20
2012/01/24 10:54:20
Summary of Contents for U-72MF1U9
Page 118: ...Section 8 TENTATIVE ...