Trane Building Automation System, BMTK-SVN01D-EN manual Comm5 daisy-chain repeater connection

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Wire the UCMs

Figure 20. Comm5 daisy-chain repeater connection

Comm5 device Comm5 device

B	A	B	A	B	A	B	A	Tracker
								termination boardTB1
							1	13	COMM
								14
								15
		Splice	3		Splice		3
								Link repeater
								1	24 VAC
								2
								3	Comm
							1	4
								5
								6
							1	7	Comm
(Last device on the link)								8
Comm5 device				Comm5 device				9
B	A	B	A	B	A	B	A
	1
		2			Splice		3
Legend

=	Twisted pair, shielded wire		=	Shield termination
	per Trane specifications
=	Shield ground	=		Figure note	Figure Notes:
					1	105 Ω termination resistor
=	Termination resistor				2	Shield must be cut back and taped
					3	A continuous shield is required. At each
					controller, splice shield wire and tape back to
					prevent grounding.

BMTK-SVN01D-EN 39