Trane HORIZON ABDA - Control Modules; Figure 5. Location of microprocessor control modules

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Control Modules
Microprocessor control modules are mounted on the left-
hand and right-hand side of the main unit control panel
and in the burner control panel.
Figure 5. Location of microprocessor control modules within the main unit control panel and burner panel
Comm 3 & 4
IPCB
Printer Intf
Purge
Stepper
Class II Wiring Class I Wiring
Left Hand Side of Unit Control Panel Right Hand Side of Unit Control Panel
Backplane
Options
Chiller
Starter
Circuit
Burner
Remote Mounted Burner Control Panel
(ABDA only)
Class II Wiring Class I Wiring
Class II Wiring Class I Wiring