Connecting Multiple Ag-150A To A System With Connection To Expansion Controllers - Mitsubishi Electric AG-150A Instruction Book

5-3 Connecting multiple AG-150A to a system with connection to Expansion controllers

Multiple AG-150A or other controllers can be connected to an air conditioning system, and each controller can control and monitor the
system.
Note that the number of connectable units and the software version is limited.
If the software version is unsupported, update the software version of the controllers.
(1) Restrictions on the number of connectable units
The total number of AG-150A should be three or less.
(2) Restrictions on the software version
No. of connectable units
Software version
(3) Restrictions on the DB No.
Controllers with different DB No. cannot be connected to each other.
(4) Miscellaneous restrictions
• Controllers such as AG-150A connected to a system must have the same settings for the settings such as Group or Interlocked
ventilation (LOSSNAY).
Different settings for the settings such as Group or Interlocked ventilation (LOSSNAY) cannot be made in a system.
• When connecting a general equipment using a DIDO controller (PAC-YG66DCA), register a group to each AG-150A connected to
a system.
Use only one AG-150A to make group settings for other units.
• When multiple AG-150A controllers are connected to a system, the following functions should be used only on one of the AG-150A
controllers : License registration, schedule settings, Schedule Not Available, energy-save, peakcut, Night Setback Control,
Interlock, External Temperature Interlock, Night Mode Schedule, System-changeover, and Set temperature range limit.
• Icons that indicate schedule, Schedule Not Available, energy-save mode, and setback mode enabled appear only on the AG-150A
that controls these modes.
System example when connecting multiple AG-150A
Switching
HUB
LAN
PAC-YG50ECA
PAC-YG50ECA
PAC-YG50ECA
PAC-YG50ECA
AG-150A
PAC-YG50ECA
AG-150A
24VDC
PAC-SC51KUA
AG-150A
M-NET
Outdoor unit
Outdoor unit
M-NET
LOSSNAY
unit
MAIN
BOX
HWHP unit
1 unit
Ver. 1.00 or later
Ver. 2.00 or later
24VDC
PAC-SC51KUA
AG-150A
M-NET
Indoor unit
M-NET
Indoor unit
M-NET
LOSSNAY LOSSNAY
unit unit
SUB
MAIN SUB
BOX
BOX BOX
HWHP unit
– 19 –
3 units or less
2 or 3 units
Ver. 1.30 or later
Ver. 2.30 or later
24VDC
PAC-SC51KUA
AG-150A
LOSSNAY
unit
MA remote controller
LOSSNAY
unit
MA remote controller
LOSSNAY
unit
MAIN SUB
BOX BOX
HWHP unit