S8V2-SVX001-1A-EN
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External Switches and Accessories
When connecting a humidifier or electronic air cleaner to the furnace,
use ACC1 for the air cleaner and ACC2 for the humidifier.
• Accessory 1 and 2 are dry contacts need source voltage from the
accessory.
• External switches 1 and 2 have 24VAC source voltage and are to
be connected to Normally Closed (NC) contacts on the device, i.e
smoke detector.
Note: In Link Communicating mode, Accessories and External
Switches can be configured in the UX360 User Interface or
Diagnostics Mobile app.
Note: In 24V mode, Accessories and External Switches can be
configured in the UX360 User Interface or Diagnostics Mobile
app.
Note: DO NOT USE the Condensate Cooling option in 24V mode of
operation. See the 24V Field Wiring Diagram section.
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