Toshiba MMY-MUP0721FT6P-UL Service Manual page 113

Setup method
(1) Connect the header units of systems to perform system cooperation defrosting to each other by Uh
(U3, U4) (Central control).
(2) SW100-bit1 (termination resistance of Uh line) of master outdoor unit is turned on.
(3) Do not set the same system addresses for each system that link defrosting.
For the system address, please refer to "7-4-3. Address Setup Procedure 2-2.Line (system) address
setting", and set with "automatic address setting "or " address setting by remote controller"
(4) Set the outdoor DN code (O. DN) [01D], [01E], [01F] to the header unit in each system by the following
setup method. (Setting the outdoor DN code (O. DN) to follower unit is not necessary.)
1) Decide a master unit and vassal units from header units of each of the systems, and set the master unit
to [01F] = 0001, and the vassal units to [01F] = 0002 or 0003.
2) Set the outdoor DN code [01E] of each header unit to 0001.
When using the central controller for system cooperation defrosting control, set to 0001 through 0128 in
accordance with the manual for the central controller.
3) Set the number of systems performing defrosting cooperation (0002 or 0003) in the [01D] of the outdoor
unit set to be the master unit.
Outdoor
Item
DN code
System cooperation
01d defrosting settings 1
(number cooperating)
System cooperation
01E defrosting settings 2
(zone address)
System cooperation
01F defrosting settings 3
(cooperation address)
(5) Reset power supply of outdoor unit, and setup is complete.
<Wiring and setup examples>
2-system setup
System I header unit
Outdoor
Setting value
DN code
[01D] 2
[01E] 1
[01F] 1
SW100-bit1 = ON
System II header unit
Outdoor
Setting value
DN code
[01D] 0
[01E] 1
[01F] 2
SW100-bit1 = OFF
0000 : None (vassal)
0002 : 2-system cooperation (master unit)
* set [01D] = 0002 or 0003 to outdoor unit set to master unit in outdoor DN code [01F]
0000 : None
0001 when not using central controller for control for system cooperation defrosting,
0001 to 0128 when using central controller
0000: None
0002 or 0003: Vassal units 2 or 3
Master
System I
Outdoor unit
Header unit
Uh
Indoor
U3 U4
unit
Vassal
System II
Outdoor unit
Header unit
Uh
Indoor
U3 U4
unit
Description
0001 : Prohibition
0003 : 3-system cooperation (master unit)
0001 to 0128: Addresses
0001: Master unit
3-system setup
System I header unit
Outdoor
Setting value
DN code
[01D] 3
[01E] 1
[01F] 1
SW100-bit1 = ON
System II header unit
Outdoor
Setting value
DN code
[01D] 0
[01E] 1
[01F] 2
SW100-bit1 = OFF
System III header unit
Outdoor
Setting value
DN code
[01D] 0
[01E] 1
[01F] 3
SW100-bit1 = OFF
- 113 -
At shipment
0000: None
(vassal)
0000: None
0000: None
Master
System I
Outdoor unit
Header unit
Uh
Indoor
U3 U4
unit
Vassal
System II
Outdoor unit
Header unit
Uh
Indoor
U3 U4
unit
Vassal
System III
Outdoor unit
Header unit
Uh
Indoor
U3 U4
unit