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1
1
. Restrictions
1
1
System Restrictions and System Configuration
Each unit of the Split-Type Air Conditioners for Computer Rooms comes as a part of a system. For each unit to be
integrated into the system, the system requires a series of switch setting. Be sure to read the following to properly
configure the system.
[1] Switch Setting
(1) Types of Switches
✻
Inside indoor units, there is a control board for each refrigerant system.
Be sure to set the address for each of the control board.
2
Two or more identical addresses cannot coexist in the same system. If two or more of the same address
are used, the unit will not run properly.
(3) How to Set the Switches
1
Address Switch
(2) Notes on Switch Setting
1
Cut off the power supply before changing switch settings.
If the settings are changed while power is supplied to the unit, the change will not take effect, and it will
cause the unit to malfunction.
Type
Outdoor Unit
Indoor Unit
Address Switch
rotary
™
™
✻
1
Power-Source Switch Connector 4-Pin connector CN40
™
Switches to Be Operated
Cut off the power supply to
Outdoor Unit
Outdoor unit
Indoor Unit
Outdoor and Indoor Units
Unit Type
Setting
Range
Digits
Setting Method
Factory
Setting
Indoor Unit
1-50
2
(the hundred's
digit is always
set to 0)
Outdoor Unit
51-100
2
00
00
(the hundred's
digit is always
set to 0)
· Use numbers between 1-50.
All the indoor units controlled by the same centralized
controller should be assigned sequential numbers
starting with 01.
· Only use odd numbers to set the top controller of the
indoor unit.
· To set the bottom controller of indoor units, add one to
the address of the top controller in the same unit. If
P250 and P500 systems coexist, Refer to P34.
· The address for the outdoor unit should equal the
address the of the indoor controller address in the
same refrigerant system plus 50.
